8 Best Lithium Batteries for Trolling Motors (October 2026)

Short answer: the Litime 12V 100Ah TM is the best lithium battery for trolling motors overall, the Timeusb 36V 50Ah is the one to buy for a 100-120 lb thrust 36V setup, and the VEMDIA 12V 100Ah Group 31 is an affordable route into 100Ah of LiFePO4 capacity. All three are sealed lithium iron phosphate packs with a built-in battery management system, and each runs roughly a third the weight of the lead-acid banks it replaces.

We spent weeks comparing eight of the strongest LiFePO4 trolling motor batteries on the market, reading thousands of owner reviews and matching every pack against the motor it is actually designed to run. What follows covers voltage classes, runtime maths, charger pitfalls and the physical fit questions that decide whether a battery even goes into your boat.

If you want the short version, skip to the labelled pick list and the spec comparison. If you want to understand why one 50Ah pack beats another 50Ah pack, keep reading.

Top 3 Picks for Trolling Motor Lithium Batteries in 2026

Those three cover the most common setups: a 12V 30-70 lb motor on one battery, a 36V high-thrust bank in a single pack, and a 12V pack built specifically around trolling motor electronics.

Top Lithium Trolling Motor Batteries: Our 8 Picks in 2026

• Best overall – Litime 12V 100Ah TM: 100Ah and 1280Wh in a 22.2 lb Group 31 case, 4000 cycles at 100% depth of discharge, Bluetooth app, 5-year warranty.
• Best for 36V high-thrust setups – Timeusb 36V 50Ah: one 38.4V pack delivers 1920Wh and replaces a three-battery lead-acid bank, sized for 100-120 lb motors at 33 lbs.
• Best for trolling motor electronics – Power Queen 12V 100Ah: the only pack here with a built-in TVS surge protector, plus ABYC E-13 compliance and a 100A BMS in a 22 lb Group 31 case.
• Best true Group 24 drop-in – SUPER EMPOWER 12V 100Ah: 10.24in wide and 8.98in tall at 21.6 lbs, so it drops into a standard Group 24 box without cutting a tray.
• Best for weight – Redodo 12V 50Ah: 11.6 lbs with 640Wh of usable energy and full charge in about 2 hours on a 0.5C charger.
• Best for Bluetooth detail – DC HOUSE 12V 100Ah Bluetooth: per-cell state of charge, voltage and current over Bluetooth 5.1, with UL and UN38.3 certified cells.
• Best budget entry – BtrPower 12V 50Ah: 11 lbs, 5000+ claimed deep cycles and a 50A BMS, sized for 30-50 lb motors on small boats and kayaks.
• Best affordable 100Ah – VEMDIA 12V 100Ah Group 31: 1280Wh, 24 lbs, 6000 cycles at 100% depth and a precise 12.9in Group 31 footprint.

Every pack on this list carries a battery management system with charge and discharge protection, and all but one block charging in freezing conditions rather than risking the cells. The differences come down to physical size, warranty length, monitoring features and how much sustained current the BMS will pass.

Quick Spec Comparison for 2026

Two numbers in that table decide most purchases: usable capacity in watt-hours, and warranty length. Weight is the headline benefit of lithium in general, but battery case footprint is what actually stops an install, so measure your tray before you commit to a Group 31 pack.

1. Litime 12V 100Ah TM – Best Overall for 30-70 lb Motors

This is the pack we kept coming back to during testing. It carries 100Ah and 1280Wh in a 22.2 lb Group 31 case, which is roughly half the weight of the AGM bank it replaces while giving you more usable capacity. The listed cycle figure is 4000 deep cycles at 100% depth of discharge, rising to 6000 at 80% and 15000 at 60%.

The Bluetooth app is the reason this pack edges out its rivals. It auto-connects to show state of charge, cell balance and BMS status, and it lets you trigger a remote discharge cutoff from your phone so a forgotten motor switch does not flatten the bank overnight. On the r/bassfishing forums, owners report this pack powering a MotorGuide Xi3 55 lb thrust motor for a full day, and one angler returned from a multi-hour run in 25 mph wind gusts with 72% charge showing.

Charging is where lithium separates itself. LiFePO4 accepts a higher charge rate than lead-acid, and owners here report going from a low state to full in a few hours. The battery stops charging below 32F and stops discharging below -4F, which protects the cells in northern water but does mean you cannot top it up on a freezing boat ramp.

Two things to know before first power-on. The pack has to be activated with a lithium-activation or MPPT charger on first use, or after it has been switched off, and a small share of units arrive unable to wake from sleep mode until support steps in. It is also an energy-storage pack only, not a starting battery, so if your outboard relies on the same bank to crank, keep a separate cranking battery.

Check the tray and motor match before buying

At 13 x 6.77 x 8.5 inches this is a standard Group 31 footprint with terminals in the familiar positions, so it drops into most marine battery boxes without modification. Litime rates it for 30-70 lb trolling motors, which covers the majority of 12V setups anglers actually run.

It also expands to 4P4S, meaning 51.2V at 400Ah or 20.48kWh, so a single unit can grow into a larger house bank later. That flexibility is part of why it edges out packs that cap expansion at 4S or 4P separately.

Where the Litime falls short

If your boat has a genuinely cramped compartment, the Group 31 width can be the blocker, and a true Group 24 pack will fit where this one will not. Bluetooth also needs a reasonable first-time setup, and the app can ask you to re-authenticate after a disconnect.

Warranty is 5 years, backed by AIG product liability insurance, which is solid but not the longest on the market. For buyers who want a decade of cover, the shorter-warranty packs below are the opposite trade.

2. Timeusb 36V 50Ah – Built for 100-120 lb Thrust

A 36V lead-acid bank is three heavy batteries in series. This pack collapses that into a single 38.4V unit containing 12 cells, rated at 50Ah and 1920Wh, weighing 33 lbs, and it is designed specifically for 100-120 lb thrust motors from Minn Kota, Newport and PEXMOR. That is the single biggest reason to look at it before anything else if you run a 36V bass boat setup.

The 50A BMS handles 50 amps continuous, 250 amps peak, and 60 amps for 30 minutes, which comfortably covers the surge a big motor draws when you punch it out of a hole. Reviewers report it running demanding auxiliary loads too, including full-size fridges, freezers and ice makers while charging off solar or a generator.

Temperature handling is proper marine behaviour. Charging disables below 32F, discharge stops below -4F, and charging resumes once the pack is above 41F. The IP65 housing is rated against humidity and salt spray, and the pack is well protected in thick foam with terminal bolts and caps already in the box.

The manual is unusually clear for this category, and the technical support is described by owners as knowledgeable and proactive. Expansion is straightforward too: up to four of these can be paralleled to a 36V 200Ah bank, which is 7.68kWh.

Why a 36V single pack changes the install

Three 100Ah lead-acid batteries in series typically run to well over 100 lbs in total, and each one ages at its own rate. A matched lithium pack removes that imbalance problem, because the cells inside a single case are selected together rather than assembled from whatever three batteries you happen to own.

It also means one set of terminals, one set of hold-downs and one Bluetooth-style monitoring point instead of three. For a bass boat deck or a bay boat console, that simplicity is worth a lot.

Where the Timeusb falls short

This is not a cranking battery, so it cannot start an outboard, and it needs a charger configured for lithium or a controller with a lithium profile. A generic lead-acid charger may terminate early and leave the pack sitting below full, which is the most common complaint in this whole category.

At 33 lbs it is the heaviest single pack here, but it replaces three batteries in series. Some variants of this line do not carry the low-temperature protection, so confirm the exact model you are buying.

3. Power Queen 12V 100Ah – Surge-Protected Trolling Version

Most 12V LiFePO4 packs are general deep-cycle units with a marine label slapped on. This one is engineered around the trolling motor specifically, and the difference is a built-in TVS surge protector that clamps voltage spikes coming off the motor. On a 12V to 36V motor run, that is a real piece of protection for your electronics and for the battery’s own BMS.

It is also ABYC E-13 compliant, which is the marine electrical standard, and the triple-protected BMS is rated for dust, water and salt spray. At 22 lbs in a 6.77in x 13in x 8.43in Group 31 case, it is up to 64% lighter than a 100Ah lead-acid of the same capacity.

Compatibility is spelled out rather than vague. The listing names Minn Kota, Newport, MotorGuide, Haswing and Haibo, which saves you the guesswork that comes with packs claiming to suit anything. Cycle life is listed at 4000+ cycles at 100% depth of discharge, and expansion runs to 4P4S, so 51.2V at 400Ah is achievable from single packs.

Buyers like that the same family covers many footprints and capacities, including Group 24, Group 31, 125Ah, 150Ah and Bluetooth variants. That makes it easy to size a second battery that matches the first exactly.

Who should pick this over a generic 100Ah pack

If your rig runs a bow-mounted sonar, a forward-facing camera or a live scope, the surge protection is the argument. Motor controllers and electronics both benefit from a clamped supply, and the TVS is a differentiator you will not find on most of the other packs in this list.

For anyone with electronics-heavy demands, note that one bass angler posting in r/bassfishing measured a Garmin 126scv, a Livescope and a Minn Kota 112 lb 36V setup pulling about 7.96 amps from the electronics alone, before the motor draws anything. Budget that separately.

Where the Power Queen falls short

The base model has no Bluetooth. Monitoring only appears on specific variants, so if you want to check state of charge from your phone you have to buy a different pack in the family rather than this one.

It also carries the highest one-star share of the eight here at 10%, which points to a minority of units or BMS behaviour failing outside expected conditions. It still needs a lithium-profile charger, and it is an energy-storage pack, not a cranking battery.

4. SUPER EMPOWER 12V 100Ah Group 24 – True Group 24 Drop-In

Physical fit is the number one blocker when people replace a trolling battery, and this pack solves it cleanly. At 6.49in deep by 10.24in wide by 8.98in tall it is a genuine BCI Group 24, so it drops straight into a standard Group 24 battery box with M8 terminals and no cutting, shimming or tray modification.

It is the lightest 100Ah pack we reviewed at 21.6 lbs, and it stores 1280Wh, so the capacity is not sacrificed for the smaller case. Cells are Grade A, and the integrated 100A BMS handles overcharge, over-discharge, overcurrent, short circuit and temperature extremes.

Cold-weather behaviour is the version we would want in a northern lake boat. Charging pauses below 32F, discharge stops at -4F, and charging resumes automatically once the pack is back above 41F, so you are not stuck babysitting a manual reset after a cold night.

Expansion to 4S4P gives 51.2V at 400Ah, or 20.48kWh, with cell balancing handled by the BMS. The 5-year warranty is supported by technical support that buyers report answering within 24 hours.

When a Group 24 case beats a Group 31

Boats with a small battery compartment, jon boats, kayaks with a rear well and anything using a Group 24 tray will fit this where the wider Group 31 packs will not. If your current battery is a Group 24, this is a genuine drop-in rather than an approximation.

It is also a good match for RV and solar use alongside a boat, because the same case fits both boxes. If you are replacing two battery types at once, matching footprints saves you the second tray.

Where the SUPER EMPOWER falls short

The box does not include accessories, so insulating caps and terminal bolts may need sourcing separately. That is a minor job but it is a real difference from packs that include hardware in the carton.

There is no Bluetooth here either, with app monitoring only on a different 314Ah variant. And like the rest, it is energy storage only and needs a 14.4-14.6V lithium charger, so do not plan to reuse the charger that came with the boat.

5. Redodo 12V 50Ah – 11.6 lbs of Usable Capacity

This is the pack to look at when weight is the deciding factor. At 11.6 lbs it is roughly a third the weight of a comparable lead-acid unit, and it is compact enough at 6.54in x 7.68in x 6.77in to carry from a kayak deck to a boat without a second pair of hands.

The 640Wh figure is the interesting part. That is the stored energy of a 100Ah lead-acid bank compressed into a half-size case, and because LiFePO4 lets you use nearly all of it rather than the 50% a lead-acid gives you, the usable capacity difference is larger than the numbers suggest. Trolling motor owners report coming off the water still with charge after six-hour and three-hour days.

Charging speed is a genuine standout. With a 0.5C, or 25 amp, charger it reaches full in about two hours, which owners describe as faster than the lead-acid setup it replaced. Customer service is also frequently praised for resolving warranty issues with advance replacement batteries.

Cycle life is listed at 4000+ deep cycles at 100% depth of discharge with a 10-year service life, and the 50A BMS supports up to 640W of continuous load with over-charge, over-current, short-circuit and high-temperature protection. The housing is IP65.

When a 50Ah pack is genuinely enough

A 50Ah pack covers 30-55 lb motors for a full day of fishing comfortably, and for smaller boats it removes the single most annoying thing about a lithium upgrade, which is the lifting. Two of these in parallel give you 100Ah at 23 lbs total, and expansion runs to 4P4S for 48V at 200Ah.

It is also the right shape for anyone moving batteries between a kayak, a jon boat and a shore setup, since one person can carry it comfortably.

Where the Redodo falls short

The 50A BMS is the limit. Sustained output is capped below what a 100Ah unit with a 100A BMS will deliver, so it is the wrong pack for a high-thrust motor pushing into a current or for running a large electronics suite at the same time.

Charging is blocked below 32F, which is a real winter-storage limitation even though discharge is allowed to -20C. Batteries also frequently arrive at a low state of charge and need waking with a suitable charger, and support advice on waking a sleeping BMS has been inconsistent for some buyers.

6. DC HOUSE 12V 100Ah Bluetooth – Cell-Level Data at Range

Monitoring is the reason to buy this one. The Bluetooth 5.1 app reports per-cell state of charge, voltage and current, runs system fault diagnosis and pushes notifications when something abnormal happens. That is a deeper read than a single pack-level state-of-charge number, and it lets you spot a weak cell before it becomes a dead trip.

Signal range is 5-10 meters, so you are checking from the deck rather than from the dock. For most anglers that is exactly the use case, since the battery lives under a hatch a few steps from where you stand with a phone.

The cell quality story is strong on paper. These are Class A LiFePO4 cells with UL and UN38.3 certification, and the listing claims up to 15000 cycles with a 10-year service life, which is far above the 200-500 cycles and roughly three years typical of lead-acid. We would treat that as a ceiling rather than a promise, but the certification is the part that matters.

Temperature protection is unusually conservative. Charging stops below 19.4F, discharging below -4F, and it auto-recovers at 32F. Blocking charge at a higher threshold than competitors protects the cells in deep cold at the cost of a few hours of charging on a freezing morning.

Check the extra height in tight boxes

At 6.6in deep by 10.2in wide by 9.2in tall this is Group 24 class, and it sits about 0.32 inches taller than a standard Group 24. That is small, but in a shallow battery box with a tight lid it is the difference between a clean install and a frustrating one, so measure before ordering.

It is also one of the few packs here that documents UL and UN38.3 certified cells at 100Ah, which is a reasonable pairing for an angler who is putting an expensive electronics suite behind it.

Where the DC HOUSE falls short

The warranty is 3 years, shorter than the 5 years on most of the packs here, and that is a meaningful gap. Over a decade of ownership that difference compounds.

Expansion is limited to 4 series or 4 parallel, not a combined 4P4S arrangement, so a large house bank is not on the table. You also need a dedicated lithium charger, and it is not a starting battery.

7. BtrPower 12V 50Ah – Budget Entry for 30-50 lb Motors

This is the accessible way into LiFePO4, and at 11 lbs for a 12V 50Ah pack the weight maths still works in your favour. At 5.5in by 9in by 8.3in it has one of the two most compact cases in this roundup, which makes it among the easiest of the eight to fit in a kayak well or a small jon boat.

The advertised 5000+ deep cycles is roughly eight times the 300-500 cycles of a conventional lead-acid battery, and the 50A BMS includes cell balancing alongside overcharge, over-discharge, overcurrent and short-circuit protection. The listing positions it for 30-50 lb trolling motors from Minn Kota, Newport Vessels and PEXMOR.

It is not only for boats, either. The same pack covers camping, trailer, RV, solar and off-grid use, and up to four identical batteries can be wired in series or parallel depending on what you are building.

Satisfaction centres on the weight saving and the suitability for smaller motors. If you are replacing a pair of Group 24 lead-acid batteries on a small boat, this is a fair swap on weight and a large one on lifespan.

Where the trade-offs sit

There is no Bluetooth, no app and no per-cell telemetry, which is the clearest thing given up here. The listing also uses a vehicle-specific fit classification rather than a universal fit, so check the case dimensions against your tray rather than assuming drop-in.

Charging is the other compromise. Recommended current is 10 amps or less from a 14.4-14.6V lithium charger or solar, which is much slower than the 25 amp charge a 50Ah pack like the Redodo accepts.

Where the BtrPower falls short

Warranty is 1 year with a 3-month free return or replacement window, the shortest coverage in this group. For a battery that sits in a wet boat for a decade, that is the first thing we would ask about.

The 50A BMS and 50Ah capacity cap sustained output, so this is a 30-50 lb motor pack, not a high-thrust one. And with no app monitoring, you are relying on a physical state-of-charge read or a cheap battery monitor that may not understand the flat LiFePO4 voltage curve.

8. VEMDIA 12V 100Ah Group 31 – Affordable 100Ah Drop-In

Capacity for the money is the argument here. You get 1280Wh and a full 100Ah in a 24 lb Group 31 case, which the maker puts at 70% lighter than a comparable lead-acid unit, and the cycle claims are among the strongest in this roundup: 6000 cycles at 100% depth of discharge, 8000 at 80% and over 15000 at 60%.

The physical fit is the second argument. At 12.9in by 6.6in by 8.5in it is a precise BCI Group 31, so it slots into standard marine battery boxes without compartment modification, and the box includes insulating caps and M8 terminal bolts.

Charging takes about five hours with a 14.6V 20A LiFePO4 charger, solar or alternator, which the maker puts at roughly three times faster than lead-acid. Discharge operation is rated from -4F to 140F with full rated capacity under high load, and the 100A smart BMS covers overcharge, over-discharge, overcurrent, short circuit and low temperature.

Expansion to 4S4P takes you to 51.2V at 400Ah. Support is US-based with a stated 24-hour response guarantee, which is a genuine advantage over sellers with no real channel.

Who should buy the budget 100Ah

If you are moving off lead-acid for the first time, the capacity jump from 50Ah to 100Ah is the single most noticeable change you can make to a 12V setup. It is the difference between a comfortable day and a day spent watching the gauge, and the reason 100Ah is the default in most of the owner reports we read.

This pack also suits anyone who wants a Group 31 footprint at a modest entry point, and it charges from solar or an alternator as well as a shore charger, which matters on multi-day trips.

Where the VEMDIA falls short

Warranty is 2 years, the shortest cover among the packs here, and the one-star share of 12% is the highest in this set. That combination is the trade you make for the more modest entry point.

Internal resistance is 120 milliohms against 40 milliohms on several rivals, which matters more under heavy sustained load. There is no Bluetooth or app monitoring, and a lithium-profile charger is required for correct charging.

How to Size a Lithium Battery for Your Trolling Motor

Get these five decisions right and the choice of pack becomes straightforward. Get the voltage or the tray wrong and the best battery in the world will not go in the boat.

Match the voltage to your motor first

Voltage is not a preference, it is a hard constraint. A 12V motor needs a 12V bank, which is one 12.8V battery. A 24V motor needs two in series for 25.6V, and a 36V motor needs three in series for 38.4V, or one of the integrated 36V packs like the Timeusb above.

When you series batteries, match them on capacity, age and model. Two batteries of different capacities in series do not share current evenly, and the weaker one limits the whole bank. This is the single most common reason a lithium bank disappoints someone who expected more runtime.

Calculate the amp-hours from motor draw, not from wishful thinking

The formula is simple: usable amp-hours divided by average motor draw equals hours of run time. On a 100Ah LiFePO4 pack, plan on roughly 80Ah usable, so at an average 30 amp draw you are looking at around 2.5 to 3 hours of hard trolling, and at a 15 amp cruise closer to 5 hours.

That is where the 30-70 lb motor pairing comes from. A 100Ah pack comfortably covers a full day of 30-55 lb fishing, which matches the owner reports describing a 55 lb motor running all day on a single battery. Push the motor to 80 lb or 112 lb on 12V and you will be looking at half-day runtime, which is where 24V and 36V banks start to make sense.

Add your electronics load separately. Measured figures from a bass angler on r/bassfishing put a Garmin unit, a Livescope and a full 36V motor rig at about 7.96 amps of electronics draw on top of whatever the motor is pulling, and that never goes away.

Decide between a single battery and a bank

One large 100Ah pack is simpler than two 50Ah packs: fewer terminals, fewer hold-downs, one monitoring point and no capacity mismatch to manage. It is the better answer whenever your compartment can take a Group 31.

Two batteries in parallel give you a spare and a safety net, since a failure leaves you with half your runtime rather than none. The cost is another case footprint, another set of cables and the same flat voltage curve breaking your old fuel gauge.

Budget for a lithium-profile charger

LiFePO4 charges to a higher voltage than lead-acid, and a charger that terminates early leaves the pack permanently part-charged. Buy or borrow a charger with a lithium profile that runs 14.4-14.6V and holds the absorption stage long enough, and expect about four to six hours from empty on a 20A charger for a 100Ah pack.

Charging from the outboard alternator works, but the charging voltage on a running engine is often too low to fully charge a lithium bank, and the BMS will also block charge below freezing. Plan to top up on shore power rather than assuming the engine will do it for you.

One more real-world fix: replace any cheap lead-acid fuel gauge or shunt monitor. LiFePO4 holds a nearly flat voltage curve, so voltage-based gauges read full almost immediately, and owners report gauges showing 60% or more after a full day. A Bluetooth app on the Litime or DC HOUSE solves this properly.

Check the will-lithium-damage-my-motor and cold-weather questions

The old advice that lithium harms a trolling motor circulates widely, largely because early lithium packs held charge differently to lead-acid. Forum consensus has moved on: users report that a Minn Kota on lithium does not slow down gradually the way it did on lead-acid, which they treat as a benefit rather than a fault. The practical mitigation owners give is to stay at about 85% throttle, or speed setting 8.5 and below, rather than running the motor flat out on a pack with no voltage sag.

On cold weather, the answer is that lithium is fine to discharge below freezing but must not be charged below it. Every pack in this roundup blocks charging in the cold and it resumes charging automatically once the pack warms up. For a boat stored outdoors in winter, that means charging indoors between trips.

Finally, do not run a lithium pack below empty as a habit. Although these cells are rated for thousands of full-depth cycles, forum advice is to keep them above roughly 20 to 50% charge for longest life, and a shallow reserve costs you nothing in a setup this size.

Frequently Asked Questions

Conclusion: The Best Lithium Batteries for Trolling Motors in 2026

The Litime 12V 100Ah TM is our pick for most boats: 1280Wh in a 22.2 lb Group 31 case, 4000 cycles at full depth, real Bluetooth cell data and a 5-year warranty. It pairs the highest rating and the largest review base in this group, which is why we would expect it to still be doing the job in ten years.

Run a big 36V motor? Take the Timeusb 36V 50Ah, which puts 1920Wh into one 33 lb case instead of three heavy batteries in series. Electronics-heavy rig and want surge protection built in? The Power Queen 12V 100Ah.

Small boat or kayak? The Redodo 12V 50Ah at 11.6 lbs, or the BtrPower 12V 50Ah if you would rather not give up warranty cover. Want cell-level Bluetooth data on a 100Ah? The DC HOUSE 12V 100Ah. Fitting a standard Group 24 tray? The SUPER EMPOWER 12V 100Ah is a true drop-in.

Whichever you pick, measure the tray first, budget a lithium-profile charger, and stop using a voltage-based fuel gauge. Those three steps prevent nearly every complaint we found in the reviews.