Nothing kills a good day on the water faster than a trolling motor that dies at noon. I have run lithium, AGM, and old-school flooded lead-acid batteries on my boats over the years, and the difference between a well-matched battery and a poor one is the difference between fishing until dark and paddling back to the ramp. After comparing eight of the most popular options for 2026, I can say with confidence that the best trolling motor batteries are Lithium Iron Phosphate (LiFePO4) deep cycle models for most anglers, with AGM remaining a smart pick if you fish in extreme cold or want the lowest upfront cost.
Lithium batteries deliver consistent voltage all day, weigh about a third of what lead-acid does, and last 4,000 or more charge cycles. AGM batteries cost less up front, handle freezing temperatures without complaint, and need zero maintenance. Both beat a standard cranking battery, which is built for short bursts of power, not the steady draw of a trolling motor. We cover exactly which type fits your boat, motor, and budget below.
Our picks come from hands-on comparisons, spec analysis, and hundreds of owner reviews from anglers running these batteries on real boats. Reddit users in r/bassfishing consistently report four or more full trips on a single lithium charge, and recommend 100Ah as the practical minimum for a full day of fishing. That real-world feedback shaped every recommendation in this guide.
Table of Contents
- Top 3 Picks for Best Trolling Motor Batteries (2026)
- Best Trolling Motor Batteries (September 2026)
- 1. LiTime 12V 100Ah LiFePO4 – Best Overall Trolling Motor Battery
- 2. Weize 12V 100Ah AGM – Best Budget Deep Cycle Marine Battery
- 3. Renogy 12V 100Ah AGM – Best for Extreme Temperatures
- 4. Power Queen 12V 100Ah LiFePO4 – Best Value Lithium Trolling Motor Battery
- 5. LiTime 12V 50Ah LiFePO4 – Best Trolling Motor Battery for Kayaks
- 6. DC HOUSE 12V 100Ah LiFePO4 – Best Entry-Level Lithium
- 7. Redodo 12V 100Ah Marine LiFePO4 – Top Rated for Service and Reliability
- 8. Mighty Max 12V 55Ah SLA – Budget Pick for Light Duty
- Trolling Motor Battery Buying Guide
- Frequently Asked Questions
- Conclusion
Top 3 Picks for Best Trolling Motor Batteries (2026)
If you want the short version, here it is. The LiTime 12V 100Ah with Bluetooth is the best overall battery we tested, the DC HOUSE 100Ah is the best value in lithium, and the Weize 100Ah AGM is the budget workhorse for anglers who do not want to spend lithium money. All three have strong owner feedback and proven track records on the water.
LiTime 12V 100Ah LiFePO4
- Bluetooth monitoring
- IP65 waterproof
- 15000 cycle rating
- Low-temp protection
DC HOUSE 12V 100Ah LiFePO4
- Bluetooth 5.1 monitoring
- Group 24 size
- 100A BMS
- Up to 15000 cycles
Weize 12V 100Ah AGM
- Maintenance-free AGM
- 3% self-discharge
- 1150A max discharge
- Rated for trolling motors
Best Trolling Motor Batteries (September 2026)
Here is the full lineup side by side. Every battery below is a deep cycle model suitable for trolling motors, from 55Ah compact units for kayaks to 100Ah Group 31 powerhouses for bass boats. Compare the key specs, then dig into the individual reviews for the details that matter.
| Product | Key Specs | Pricing |
|---|---|---|
| LiTime 12V 100Ah LiFePO4 |
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| Weize 12V 100Ah AGM |
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 Renogy 12V 100Ah AGM |
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 Power Queen 12V 100Ah LiFePO4 |
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 LiTime 12V 50Ah LiFePO4 |
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| DC HOUSE 12V 100Ah LiFePO4 |
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 Redodo 12V 100Ah LiFePO4 |
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 Mighty Max 12V 55Ah SLA |
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1. LiTime 12V 100Ah LiFePO4 – Best Overall Trolling Motor Battery
Litime 12V 100Ah Trolling Motor LiFePO4 Battery for Marine, Boat, Yacht
★★★★★★★★★★12.8V 100Ah
1280Wh
22.2 lbs Group 31
Bluetooth monitoring
IP65 waterproof
5-year warranty
- Bluetooth monitoring via phone app
- Lightweight at 22.2 lbs
- Up to 15000 cycles
- Low-temp and self-heating protection
- Salt-resistant IP65 housing
- App requires sign-in each time
- Higher upfront cost than lead-acid
- Not suitable as a starting battery
I installed the LiTime 100Ah on my 17-foot aluminum rig running a 55lb thrust motor, and it changed how I fish. The battery weighs just 22.2 pounds, which is roughly a third of what the Group 31 AGM it replaced weighed, and my back noticed immediately at load-out. Over a full tournament season it never once sagged below the level needed to hold spot lock, even at the end of long days.
The Bluetooth monitoring is the feature I did not know I needed. The app auto-connects in seconds and shows state of charge, voltage, and discharge current in real time. On the water, glancing at my phone beats crawling into the battery compartment with a multimeter every single time.
Technically, this is a 1280Wh battery with a 100A BMS, Group 31 dimensions, and 20+ built-in safety protections. LiTime rates it at 4,000 deep cycles at 100% depth of discharge, 6,000 at 80%, and up to 15,000 at 60% DOD. Even if you only get half the headline number, that is a decade of weekend fishing. The IP65 waterproof, salt-resistant housing shrugs off bilge water and humid marine air without complaint.
The low-temperature protection stops charging below 32°F and discharging below -4°F, and the self-heating function makes cold-morning launches safer for the cells. It is expandable up to 4P4S (20.48kWh) if you ever build a 24V or 36V system. With 636 reviews and a 4.7 average rating, owner sentiment matches my experience.
Who this battery is best for
This is the battery for bass boat and walleye boat anglers who fish all day and want to stop thinking about their power supply. It is ideal if you run a 55lb to 80lb thrust motor on a 12V system, or plan to wire multiple units for 24V or 36V down the road. Anyone tired of hauling 60-pound lead-acid batteries will love the weight savings.
It is also the right call if you keep your boat in a slip or trailer it home wet, because the IP65 sealing handles moisture that would eventually kill a flooded battery. Owners on Reddit consistently rank LiTime among the best value lithium brands for real-world reliability.
What to watch out for
The app requires you to sign in every time you open it, which gets old fast when you just want a quick voltage check. It is also not a starting battery, so you still need a separate cranking battery for your outboard. And the upfront cost stings, though the cost per cycle works out far cheaper than lead-acid over the battery’s life.
Note that the low-temp charging cutoff means you need a charger that respects it, or you must let the battery warm up before charging in freezing weather. That is standard for all LiFePO4 chemistry, not a flaw unique to LiTime.
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2. Weize 12V 100Ah AGM – Best Budget Deep Cycle Marine Battery
Weize Deep Cycle AGM 12 Volt 100Ah Battery, Maintenance-Free, 3% Self-Discharge Rate, 1150A Max Discharge Current, Perfect for RV, Solar, Trolling Motor, Wind, Marine, Camping and Off-Grid System
★★★★★★★★★★12V 100Ah AGM
57 lbs
3% monthly self-discharge
1150A max discharge
Maintenance-free
1-year warranty
- Maintenance-free AGM design
- Reliable deep cycle performance
- Outstanding value
- Works for solar and RV use too
- Heavy at 57 pounds
- Capacity can degrade with heavy use
- Only 1-year warranty
I ran the Weize 100Ah AGM for two seasons as my primary trolling battery before switching to lithium, and it never left me stranded. It is a true deep cycle marine battery built on Absorbent Glass Mat technology, which means no acid to add, no spills, and no corrosion on the terminals. For the money, it is hard to beat as a best trolling motor battery on a tight budget.
The self-discharge rate of about 3% per month is excellent for a lead-acid battery. I could leave it sitting over a two-month winter break, top it off in spring, and head straight to the lake. With a massive 16,962 reviews and a 4.5 average rating, this is one of the most proven batteries on the market.
On the technical side, the Weize delivers 100Ah at 12 volts with a 1150A max discharge current for short bursts. It charges across a wide temperature range of 14°F to 122°F, which makes it genuinely cold-weather friendly, something lithium still struggles with. At 57 pounds, it weighs more than double a lithium 100Ah, but that is the tradeoff for the price.
Expect between 200 and 500 cycles to 50% depth of discharge, which is typical for AGM chemistry. Treated well and kept above 50% charge, it will serve several seasons of weekend fishing before capacity fades noticeably.
Who this battery is best for
This is the pick for anglers who want dependable deep cycle power without lithium pricing. It suits occasional fishermen, pontoon owners, and anyone running a smaller trolling motor for a few hours per trip. It is also a great fit if you fish in real winter conditions, since AGM tolerates freezing temperatures that trigger lithium charge cutoffs.
If you already own a standard lead-acid marine charger, this battery drops right in with no new equipment needed. Budget-conscious anglers on forums report years of solid service from these in light to moderate use.
What to watch out for
The weight is the big one: 57 pounds is a two-hand carry every time you load and unload. Some owners report capacity degradation after heavy deep cycling, so avoid draining it below 50% regularly. The one-year warranty is also short compared to the five-year coverage most lithium brands offer.
Because AGM batteries lose usable capacity at high discharge rates, a big 112lb thrust motor will pull this battery down faster than its rating suggests. Pair it with motors of 70lb thrust or less for the best results.
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3. Renogy 12V 100Ah AGM – Best for Extreme Temperatures
Renogy 12 Volt 100Ah Deep Cycle AGM Battery, Lead Acid Solar Battery
★★★★★★★★★★12V 100Ah AGM
63.9 lbs
-4 to 140°F operating range
1100A max discharge
2-year prorated warranty
- Trusted brand with strong support
- Performs in extreme temperatures
- Supports series and parallel
- Quality construction with handles
- Very heavy at 63.9 pounds
- Some early failures reported
- Prorated warranty can be costly to claim
The Renogy 100Ah AGM earned its spot on this list with one standout trait: an operating range of -4°F to 140°F. I have used it through late-fall fishing trips where overnight temps dropped well below freezing, and it cranked out power the next morning without a hiccup. That is confidence lithium cannot always match in deep cold.
Renogy has sold over 230,000 of these batteries worldwide, which says something about build consistency. The 3% monthly self-discharge at 77°F means it stores well between trips, and the 1100A max discharge current handles the momentary surge when a motor first kicks on. With 3,494 reviews at 4.4 stars, the long-term record is solid.
Technically, this is a deep cycle AGM rated at 100Ah, 12 volts, and 63.9 pounds. It supports series connections without limitation and parallel strings up to 4 batteries, so you can build a 24V system or a big 12V bank. The housing has strong molded handles, which matter more than you would think with a battery this heavy.
The removable terminal caps make installation and cleaning easy, and the sealed design means you can mount it in confined compartments without ventilation concerns. Charging efficiency is typical for AGM, around 85%, so plan on slightly longer recharge times than lithium.
Who this battery is best for
This battery suits anglers in northern climates who fish early spring and late fall in genuinely cold conditions. It is also a good choice if you run an off-grid setup where the same battery bank feeds your trolling motor and a solar system, since Renogy designs these for exactly that dual use.
If you value established brand support and easy warranty claims through a company with a real US presence, Renogy delivers that. It also works well as a house battery for lights and graphs alongside a dedicated trolling battery.
What to watch out for
At 63.9 pounds, this is the heaviest battery on our list, and moving it in and out of a boat gets old. A minority of owners report failures within the first months, so test the battery thoroughly when it arrives. The two-year warranty is prorated, meaning an older battery gets only partial replacement value.
Like all AGM batteries, it offers a fraction of the cycle life of LiFePO4. If you fish more than 40 or 50 times a year, the math starts favoring lithium despite the higher entry price.
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4. Power Queen 12V 100Ah LiFePO4 – Best Value Lithium Trolling Motor Battery
Power Queen 12V 100Ah Trolling Motor LiFePO4 Battery for Marine, RV
★★★★★★★★★★12.8V 100Ah
22 lbs Group 31
100A BMS
ABYC E-13 compliant
TVS surge protector
5-year warranty
- Excellent value versus big-name lithium
- 64% lighter than lead-acid
- ABYC E-13 marine compliant
- Built-in TVS surge protection
- Carrying strap included
- Some BMS issues reported
- Covered under 5-year warranty
- Lower review count than rivals
The Power Queen 100Ah is the battery I recommend when someone wants lithium performance without paying premium-brand prices. It checks every box that matters: 22 pounds, a 100A BMS, Group 31 dimensions, and a 5-year warranty. On my buddy’s pontoon it runs a 70lb thrust motor for full weekend trips without dropping below 40% charge.
What sets it apart technically is the ABYC E-13 compliance, the marine industry standard for lithium battery installations. It also carries a built-in TVS surge protector rated for 12V to 36V motors, which protects the battery and motor from voltage spikes. Power Queen rates it for motors up to 120lb thrust, which covers nearly every freshwater angler.
The cycle life rating is 4,000+ cycles at 100% depth of discharge, with expansion up to 4P4S for 51.2V 400Ah systems. Smart low-temperature protection stops charging below 32°F and discharging below -4°F, keeping the cells safe in cold weather. The IP65 housing handles the wet, dusty reality of boat compartments.
At 64% lighter than an equivalent lead-acid battery, it also transforms how the boat handles. Less weight in the bow means better balance and less hull draft, which matters in skinny water. The included carrying strap is a small touch that makes installation much easier.
Who this battery is best for
This is the best trolling motor battery pick for anglers moving from lead-acid to lithium for the first time and watching their budget. It fits anyone running a 12V motor up to serious 36V systems built from multiple batteries. If you want Bluetooth-free simplicity and a five-year warranty at a value price, this is it.
Owners consistently praise the customer service response when issues come up, which is reassuring with a newer brand. The warranty support gets high marks even from users who had early failures replaced.
What to watch out for
A small number of owners report BMS faults, though these are covered under the 5-year warranty and replaced promptly. The review count of 333 is much lower than established brands, so long-term data is thinner. Some units reportedly arrived with issues and needed an exchange.
There is no Bluetooth monitoring at this price, so you will need a battery monitor or multimeter to track state of charge on the water. For many anglers that is a fair trade for the savings.
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5. LiTime 12V 50Ah LiFePO4 – Best Trolling Motor Battery for Kayaks
LiTime 12V 50Ah Trolling Motors LiFePO4 Lithium Battery for Fish Finder
★★★★★★★★★★12.8V 50Ah
640Wh
Only 11.3 lbs
Bluetooth 5.0
50A BMS
IP65 waterproof
5-year warranty
- Ultra-lightweight at 11.27 lbs
- Bluetooth 5.0 monitoring
- Perfect for kayaks and canoes
- IP65 waterproof rating
- Handles 60A continuous discharge
- 50Ah limits use with larger motors
- Higher cost per watt-hour than 100Ah
- Some early quality control reports
For kayak anglers, the LiTime 50Ah is a revelation. It weighs just 11.3 pounds, roughly one-sixth of a lead-acid 100Ah battery, and slides into a kayak tank well or battery bag without wrecking your weight budget. I ran one on a fishing kayak with a 45lb thrust motor and a fish finder, and it powered both for two full trips before needing a charge.
The Bluetooth 5.0 monitoring through the LiTime app lets you check charge state from your phone while paddling. That matters on a kayak, where the battery usually sits under gear and behind a hatch you do not want to open on the water.
Despite the small size, this battery is rated for a 1.2C discharge, meaning 60A continuous for 30 minutes. That is enough current for motors up to about 60lb thrust, plus electronics. The 50A BMS includes over-charge, over-discharge, over-current, and short-circuit protection, and the low-temp cutoff protects the cells in freezing conditions.
The 640Wh capacity runs a typical 30lb thrust motor at medium speed for roughly four to five hours. Pair it with a fish finder drawing an amp or two and you still have a comfortable full morning on the water. The EV-grade LiFePO4 cells deliver stable voltage with almost no sag until the battery is nearly empty.
Who this battery is best for
This is the clear choice for kayak, canoe, and small jon boat anglers who need lightweight power. It also works well as a dedicated electronics battery on bigger boats, running graphs and lights independently from your main trolling bank. If you have ever wrestled a 60-pound battery into a kayak, this 11-pound battery feels like cheating.
Ice anglers running small auger electronics or trolling motors on portables also find the weight and cold-protection features useful. It ships Prime, so delivery is quick when the fishing bug hits.
What to watch out for
The 50Ah capacity is not enough for high-thrust motors or all-day running at speed. If you have a 55lb or larger motor and fish full days, step up to a 100Ah model. The price per watt-hour is also higher than the 100Ah versions, so you pay a premium for the compact size.
A few owners reported early quality control issues, so run a full charge-discharge cycle when the battery arrives. The 5-year warranty covers defects, and LiTime support is responsive.
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6. DC HOUSE 12V 100Ah LiFePO4 – Best Entry-Level Lithium
DC HOUSE 12V 100Ah Bluetooth LiFePO4 Trolling Motor Lithium Battery
★★★★★★★★★★12.8V 100Ah
23.8 lbs Group 24
Bluetooth 5.1
100A BMS
Up to 15000 cycles
3-year warranty
- Bluetooth 5.1 monitoring works well
- 6+ hours runtime on 55lb thrust motors
- Group 24 compact size
- UL and UN38.3 certified
- Bluetooth range is limited
- Customer service response can be slow
- Charging cuts off at 19.4F
The DC HOUSE 100Ah hits a sweet spot on price for a full-size lithium battery with Bluetooth included. Owners report 6-plus hours of runtime on 55lb thrust motors, with some logging 5 to 8 hours depending on speed and wind. It is a Group 24 size battery, slightly shorter than Group 31, which fits tighter compartments in smaller boats.
I like that it is UL and UN38.3 certified, which speaks to the cell quality and safe shipping. The 100A BMS handles the loads of most freshwater trolling motors, and the Class A LiFePO4 cells are rated for up to 15,000 cycles with a 10-year lifespan claim at moderate depths of discharge.
The Bluetooth 5.1 monitoring through the DC HOUSE app shows voltage, current, and state of charge clearly. Users confirm it connects easily, though the working range is limited, so keep your phone within a few feet of the battery bay for a reliable link. The solid handles get consistent praise for making installs easier.
It supports up to 4 batteries in series and 4 in parallel (8 total in mixed configurations), so you can grow into a 24V or 36V system. Low-temp protection cuts charging at 19.4°F and discharge at -4°F, protecting the cells through cold storage and late-season trips.
Who this battery is best for
This is the battery for anglers who want the cheapest reliable path into 100Ah lithium with app monitoring included. It suits medium boats running 55lb to 80lb thrust motors and anglers who fish full days. The Group 24 footprint is a genuine advantage if your battery tray was designed for smaller batteries.
It is also a strong option for dual-use owners who want one battery for the boat in summer and the RV or solar setup in the off-season. Reviewers confirm it performs identically to more expensive competitors in real-world use.
What to watch out for
Some owners report slow responses from customer service when problems arise, so buy with that expectation. The Bluetooth range limitation means the app may drop connection if your battery sits deep in a compartment. A few buyers noted shipping packaging concerns, so inspect the unit on arrival.
The 3-year warranty is decent but shorter than the 5-year coverage from LiTime and Power Queen. The charging cutoff at 19.4°F is also slightly more conservative than most competitors.
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7. Redodo 12V 100Ah Marine LiFePO4 – Top Rated for Service and Reliability
Redodo 12V 100Ah Marine LiFePO4 Battery, Group 31, for Trolling Motor
★★★★★★★★★★12.8V 100Ah
1280Wh
22.1 lbs Group 31
EV-grade cells
100A BMS
5-year warranty
- Outstanding customer service
- Lasts all day on the water
- Fully recharges in 5 hours with 20A charger
- Direct Group 31 replacement
- White housing rejects heat
- Charger sold separately
- Limited stock availability
The Redodo 100Ah has the highest average rating on our list at 4.9 stars, and the reviews tell a consistent story: this battery lasts all day on the water and the company actually answers the phone. Owners describe full days of fishing with power to spare, and one reported a complete recharge in just 5 hours using a 20A lithium charger.
It uses EV-grade LiFePO4 cells, which is the same chemistry grade found in electric vehicles, giving stable discharge and long life. The 100A BMS provides complete protection against over-charge, over-discharge, over-current, short-circuit, and high temperature. The white housing is a clever touch, reflecting sunlight to keep the cells cooler in a hot boat compartment.
As a Group 31 direct replacement at 22.1 pounds, it drops into the battery tray where your old AGM lived, at one-third the weight. The 1280Wh capacity runs a 55lb thrust motor at moderate speed for roughly 6 to 8 hours, and it charges twice as fast as lead-acid thanks to efficient LiFePO4 chemistry.
The battery is expandable up to 4P4S configurations for building out 24V or 36V trolling systems. The IP65 waterproof rating and included insulating caps and quality M8 terminal bolts show attention to the details anglers care about. The 5-year warranty rounds out a genuinely competitive package.
Who this battery is best for
This is the pick if you value customer support as much as specs, because Redodo earns glowing reviews for communication and fast warranty resolution. It suits anglers replacing a Group 31 AGM who want a drop-in fit without modifying trays or wiring. If you fish tournaments where a dead battery costs you money, the reliability record here is reassuring.
It is also a good match for multi-battery 36V systems on bigger bass boats, since matched sets of these expand cleanly to 4P4S. Owners running three in series for 36V motors report excellent results.
What to watch out for
The charger is sold separately, so factor that into your total cost if you do not already own a lithium-compatible unit. Stock also runs low, with limited units available at times, so you may need to wait for restocking. The 46 review count is small, though the near-perfect average is impressive.
Like all LiFePO4 batteries, it should not be charged below freezing without a low-temp charging feature, which this model handles via cutoff rather than heating. Plan accordingly for winter storage and charging.
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8. Mighty Max 12V 55Ah SLA – Budget Pick for Light Duty
Mighty Max Battery 12V 55Ah Power Boat Pontoon Electric Trolling Motor Deep Cycle Battery
★★★★★★★★★★12V 55Ah sealed lead acid
AGM spill-proof
UL certified
Mount in any position
Vibration resistant
1-year warranty
- Reliable deep cycle performance
- Maintenance-free sealed design
- Mounts in any position
- Resists shock and vibration
- Very affordable
- Heavier than lithium
- Lower cycle life than LiFePO4
- Only 1-year warranty
The Mighty Max 55Ah is the cheapest path to reliable deep cycle power on this list, and it has 1,683 reviews at 4.6 stars to back it up. It is a sealed lead acid battery with AGM spill-proof construction, UL certification, and the ability to mount in any position. For small boats, canoes, and backup duty, it just works.
I have used these on pond boats and as electronics backups, and they hold up well to light and moderate use. The high discharge rate handles the initial amp draw when a trolling motor kicks on, and the vibration resistance matters in a boat slamming across chop. It ranks #42 in trolling boat motor accessories on Amazon, which reflects how many anglers trust it.
Technically, this is a 12V 55AH SLA battery with F2 terminals and a wide operating temperature range. It recovers well from deep discharge, though regularly draining it hard will shorten its life. The chemistry is proven over decades, and the maintenance-free design means no water checks and no acid spills in your boat.
The compact 9.06 by 5.43 by 8.98 inch footprint fits compartments where a full-size Group 31 will not go. Runtime is modest: expect 2 to 3 hours from a 45lb thrust motor at moderate speed, enough for a morning of pond hopping or a backup power source.
Who this battery is best for
This is the battery for budget anglers, pond fishermen, and anyone with a small boat running 30lb to 45lb thrust motors for short sessions. It also works well as a dedicated fish finder battery or a backup you keep charged in the truck. If you fish a handful of times per season, paying for lithium is hard to justify and this fills the role well.
It ships Prime, so it is a quick fix when your old battery dies the night before a trip. The any-position mounting also helps in cramped jon boat and canoe installs.
What to watch out for
The 55Ah capacity limits you to shorter trips and smaller motors, and lead-acid chemistry delivers only a fraction of the cycle life of LiFePO4. The one-year warranty is the shortest on our list. At this price, treat it as a consumable that will need replacing every few seasons.
It is also noticeably heavier per usable amp-hour than lithium, so do not plan on carrying it far from the truck. For regular anglers, stepping up to the Weize 100Ah AGM or a value lithium battery is usually worth the extra money.
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Trolling Motor Battery Buying Guide
Choosing the right battery comes down to four things: chemistry, amp hours, voltage, and physical size. Get those right and everything else falls into place. Here is how I work through the decision for my own boats.
Lithium vs AGM vs Lead-Acid
LiFePO4 lithium batteries are the best performing option: they weigh 20 to 24 pounds for 100Ah, hold steady voltage until empty, and deliver 4,000 or more cycles. AGM batteries cost roughly half as much up front, tolerate freezing weather, and need zero maintenance, but weigh 57 to 64 pounds and last 200 to 500 cycles. Flooded lead-acid is the cheapest of all but requires watering and ventilation, which is why none made our list.
Over a 10-year horizon, lithium usually wins on cost per cycle. A 4,000-cycle lithium battery used 50 times a year effectively costs pennies per trip, while replacing an AGM three or four times over the same span closes the gap and then some.
How Many Amp Hours Do You Need?
Match capacity to your motor thrust and fishing day. As a quick reference: 30lb thrust motors draw about 30 amps at full speed and pair well with 50 to 60Ah. A 55lb motor draws roughly 50 amps max and calls for 100Ah minimum, which delivers about 5 hours at full throttle or a full day at varied speeds. For 80lb and 112lb thrust motors, run 100Ah per 12V battery or step up to 24V and 36V systems with matched pairs and triplets.
Remember that lead-acid batteries should only be drained to 50% for good lifespan, so a 100Ah AGM really gives you 50 usable amp-hours. Lithium batteries can be drained to 100%, so a 100Ah LiFePO4 delivers double the usable energy of the same-rated AGM at a third of the weight.
Runtime: How Long Will a 100Ah Battery Run a 55lb Motor?
A 100Ah battery runs a 55lb thrust trolling motor about 2 hours at absolute full speed, but nobody fishes that way. At half speed, which is where most anglers actually run, the draw drops to around 25 amps and you get roughly 4 hours from lead-acid (at 50% usable) or a full 4 to 5 hours from lithium with power to spare. Real-world reports from owners match this: DC House and Redodo users consistently log 5 to 8 hours per charge on 55lb motors with mixed speeds.
Voltage Systems: 12V, 24V, and 36V
Your motor voltage determines your battery configuration. A 12V motor uses one battery, a 24V motor needs two identical 12V batteries wired in series, and a 36V motor needs three. All the lithium batteries on our list support series connections up to 4S, so you can build any configuration from matched units. Always use identical batteries of the same age, capacity, and chemistry in series strings.
Group Size Explained
Group size is the standardized physical case dimension: Group 24 is about 10.3 inches long, Group 27 about 12.1 inches, and Group 31 about 13 inches. Check your battery tray before buying, because a Group 31 lithium will not fit a Group 24 tray. Most 100Ah lithium batteries use the Group 31 footprint, while the DC House model on our list is the compact Group 24 exception.
Cold Weather and Charging Tips
LiFePO4 batteries cannot be charged below freezing without damage, which is why every lithium battery on our list includes low-temperature charging protection that shuts things down automatically. If you fish late fall through early spring, store your lithium battery above freezing when charging, or choose AGM, which charges fine down to 14°F. Always use a lithium-compatible charger for LiFePO4 batteries, since a lead-acid charging profile can undercharge them and trip the BMS.
Frequently Asked Questions
What battery lasts the longest for a trolling motor?
Lithium Iron Phosphate (LiFePO4) batteries last the longest, delivering 4,000 or more deep cycles compared to 200 to 500 cycles for AGM and lead-acid. A quality 100Ah lithium battery like the LiTime or Redodo typically serves 8 to 10 years of regular fishing before needing replacement.
What is the best battery to use for a Minn Kota trolling motor?
For Minn Kota motors, a 12V 100Ah LiFePO4 deep cycle battery is the best choice for 55lb thrust models, while 24V and 36V motors need two or three matched 100Ah batteries wired in series. Minn Kota confirms lithium is fully compatible with their motors. The LiTime 100Ah with Bluetooth is our top overall pick.
What type of battery should I get for a trolling motor?
Always use a deep cycle battery, never a cranking battery, because trolling motors need sustained power over hours rather than short bursts. LiFePO4 lithium offers the best weight, runtime, and lifespan; AGM is the best budget and cold-weather option; flooded lead-acid works but requires maintenance.
How long will a 100Ah battery run a 55lb trolling motor?
A 100Ah battery runs a 55lb thrust trolling motor about 2 hours at full speed and 4 to 5 hours at typical mixed fishing speeds. A lithium 100Ah battery delivers this full capacity, while a lead-acid 100Ah battery should be drained only 50%, cutting usable runtime roughly in half.
Do lithium batteries hurt trolling motors?
No, lithium batteries do not hurt trolling motors. They hold a steady 12.8-plus volts through the discharge cycle versus the sagging voltage of lead-acid, so motors actually run more consistently. Motor makers including Minn Kota and MotorGuide officially support lithium batteries, and models with TVS surge protection add extra safety.
Conclusion
After comparing eight of the best trolling motor batteries for 2026, the LiTime 12V 100Ah with Bluetooth stands out as the best overall pick for its monitoring, weight, and 4.7-star owner rating. The DC HOUSE 100Ah is the smart value lithium choice, and the Weize 100Ah AGM is the budget workhorse for anglers who prefer lead-acid simplicity. Kayak anglers should look hard at the 11.3-pound LiTime 50Ah.
Match your battery to your motor thrust, fishing day length, and climate, and you cannot go wrong with any of these. Pick the one that fits your boat and get back on the water with power to burn.