Best Lithium Batteries for Trolling Motors: 5 Picks
Safety note: Lithium batteries store a lot of energy. Charge them only with a charger made for LiFePO4 batteries, install...
By James
Updated November 10, 2026
Safety note: Lithium batteries store a lot of energy. Charge them only with a charger made for LiFePO4 batteries, install the fuse or circuit breaker your trolling motor maker specifies, secure the battery so it cannot slide, and follow the motor and battery makers’ wiring instructions. For permanent boat wiring, ABYC standards are the usual reference, and a marine electrician can help. None of the batteries here are made for starting an engine.
A lithium (LiFePO4) battery can make a trolling motor setup much lighter than lead-acid and keep voltage steadier as it drains, so the motor holds its speed longer. The trade-off is cost, plus a need for a lithium-compatible charger. The right battery depends on your motor’s voltage, its thrust, and how much space you have.
This guide compares five LiFePO4 batteries from LiTime, Renogy, and Redodo, including 12V options for most motors, a 24V battery for larger motors, and a small battery for kayaks. We compared each maker’s published capacity, weight, size, discharge rating, cold-weather protection, and waterproof rating. For more gear, see our boating and kayak gear section.
Our Top Picks
| Best for | Product | FH Score About FH ScoreThe FH Score is our editorial rating from 0 to 10, based on published specs, materials, warranty and value. It is not based on Amazon ratings and is never influenced by commissions. Learn more › | |
|---|---|---|---|
| Best overall |
LiTime 12V 100Ah Trolling Motor Battery
|
8.1/10 | Check Price |
| Best compact |
Renogy 12V 100Ah Trolling Motor Battery
|
8.0/10 | Check Price |
| Best value |
Redodo 12V 100Ah Marine Battery (Group 31)
|
7.7/10 | Check Price |
| Best for 24V motors |
LiTime 24V 100Ah Lithium Battery
|
7.6/10 | Check Price |
| Best for kayaks |
Redodo 12V 50Ah Trolling Motor Battery
|
7.2/10 | Check Price |
The Picks in Detail
LiTime 12V 100Ah Trolling Motor Battery (Group 31)
Why it made the list: This LiTime battery fits a standard Group 31 battery box and weighs 22.2 lb, per LiTime. It has Bluetooth monitoring through LiTime’s app and low-temperature protection that stops charging below 32°F and discharging below -4°F, which matters for early-spring and late-fall anglers. LiTime lists it for 30 to 70 lb thrust motors.
Key specs: 12V 100Ah, 1280Wh; Group 31 size; 22.2 lb; Bluetooth monitoring; low-temp protection (no charging below 32°F, no discharging below -4°F); IP65; 4000+ cycles, per LiTime; expandable to 4P4S. Bluetooth activates after a first charge with a lithium-activation or MPPT charger.
Skip it if: your battery compartment can flood. The Renogy is rated IP67.
Pros
- Drop-in Group 31 size
- Cold-weather protection
- App shows charge level and status
Cons
- IP65, not IP67, so keep it out of standing water
- Bluetooth needs an activation charge
Renogy 12V 100Ah Trolling Motor Battery (Group 24)
Why it made the list: Renogy fits 100Ah into a Group 24 case, which Renogy says is about two-thirds the volume of Group 31, so it fits smaller boats and tight compartments. It is rated IP67, and Renogy says it keeps working when the battery compartment floods. It also has the highest discharge rating here: 150A continuous and 300A surge for 30 seconds.
Key specs: 12V 100Ah; Group 24 size; 21.8 lb; 150A continuous, 300A surge (30 seconds); 150A BMS with low-temp cutoff; IP67; Bluetooth 5.3 with Renogy app; can be wired in series for 12V to 36V motors.
Skip it if: you have a Group 31 box and want the lowest cost. The Redodo fits it for less.
Pros
- Small Group 24 footprint
- IP67 water resistance
- High continuous discharge
Cons
- Costs more than the Redodo
- Exact charge temperature limits not stated on the listing
Redodo 12V 100Ah Marine Battery (Group 31)
Why it made the list: The Redodo is a straightforward Group 31 replacement for lead-acid at a lower price. It weighs 22.04 lb and measures 13 x 6.77 x 8.5 inches, per Redodo. Its 100A BMS supports 100A continuous charge and discharge, and a 20A charger recharges it in about 5 hours. The white case is meant to reflect sun.
Key specs: 12V 100Ah, 1280Wh; Group 31, 13 x 6.77 x 8.5 in; 22.04 lb; 100A BMS (1280W max); about 5 h full charge with a 20A charger; expandable to 4P4S; white housing.
Skip it if: you fish in freezing weather. Choose a battery with low-temp cutoff, like the LiTime.
Pros
- Lower cost than the other 100Ah picks
- Drop-in Group 31 size
- Clear published dimensions
Cons
- No low-temperature protection listed
- No Bluetooth monitoring
LiTime 24V 100Ah Lithium Battery
Why it made the list: Many bow-mount motors in the 70 to 100 lb thrust range run on 24V. Instead of wiring two 12V batteries in series, this single 24V battery does the job. LiTime lists it for 70 to 100 lb motors, with Bluetooth monitoring and an IP65 rating.
Key specs: 24V 100Ah; 8.2 x 21 x 8.5 in; 43.52 lb; 100A BMS with 20+ protections; Bluetooth 5.0; IP65; 4000+ cycles at 100% depth of discharge, per LiTime; expandable to 4P2S.
Skip it if: your motor runs on 12V. A 12V 100Ah battery is lighter and fits standard boxes.
Pros
- One battery instead of two for 24V
- Bluetooth monitoring
- Suited to larger bow-mount motors
Cons
- 21 inches long; LiTime warns many Group 31 boxes are too small
- Heavy for one person at 43.52 lb
Redodo 12V 50Ah Trolling Motor Battery
Why it made the list: Kayaks and small jon boats with low-thrust motors do not need a 100Ah battery. The Redodo 50Ah weighs 11.6 lb, small enough to carry down to a launch with one hand, and its 50A BMS supports up to 640W. A 25A charger refills it in about 2 hours, per Redodo.
Key specs: 12V 50Ah, 640Wh; 11.6 lb; 50A BMS (640W max load); 4000+ cycles, per Redodo; about 2 h charge with a 25A charger; expandable to 4P4S. The listing title states a 5-year warranty and IP65 rating.
Skip it if: your motor pulls more than about 50A at full speed. Use a 100Ah battery.
Pros
- Light and easy to carry
- Fast charging
- Good fit for kayak motors and electronics
Cons
- 50A BMS limits high-thrust motors
- No low-temperature protection listed
Lithium Trolling Motor Batteries Compared
| Battery | Voltage / capacity | Weight | Case size | Low-temp protection | Water rating |
|---|---|---|---|---|---|
| LiTime 12V 100Ah | 12V 100Ah | 22.2 lb | Group 31 | Yes | IP65 |
| Renogy 12V 100Ah | 12V 100Ah | 21.8 lb | Group 24 | Yes | IP67 |
| Redodo 12V 100Ah | 12V 100Ah | 22.04 lb | Group 31 | Not listed | Not stated on listing |
| LiTime 24V 100Ah | 24V 100Ah | 43.52 lb | 21 in long | Yes | IP65 |
| Redodo 12V 50Ah | 12V 50Ah | 11.6 lb | Not stated | Not listed | IP65 (listing title) |
How We Picked
We did not run these batteries on a boat for this guide. We researched each one and compared the specifications published by the makers. Cycle-life figures are the makers’ claims. Our criteria:
- Voltage and capacity matched to common trolling motors.
- Discharge rating high enough for the motor’s maximum draw.
- Cold-weather protection, since charging LiFePO4 below freezing can damage it.
- Size and weight against standard battery boxes.
- Water resistance and monitoring.
The FH Score in each product box is our editorial rating, built from five weighted criteria: performance for the job, build quality, versatility, warranty and value. It is not based on Amazon ratings. See how it works on our How We Review page.
How to Choose a Lithium Trolling Motor Battery
Match the voltage
Check your motor’s voltage first. Most transom and small bow-mount motors run on 12V. Many larger bow-mount motors run on 24V or 36V. You can reach 24V or 36V with two or three identical 12V batteries wired in series, if the maker allows series use, or buy a single higher-voltage battery.
Capacity
Amp-hours (Ah) set run time. A 100Ah lithium battery is a common choice for a full day on a 12V motor. Kayaks and small motors can run on 50Ah.
Discharge rating (BMS)
The battery’s management system limits how much current it can supply. Check your motor’s maximum amp draw and choose a battery whose continuous rating exceeds it.
Cold weather
LiFePO4 batteries should not be charged below freezing. Batteries with low-temperature cutoff protect themselves. If you fish in cold weather, choose one with this feature.
Charger
Use a charger with a LiFePO4 mode. Many older lead-acid chargers do not charge lithium correctly.
Related Guides
See more in our Marine Batteries section.
FAQ
How long will a 100Ah lithium battery run a trolling motor?
It depends on motor size, speed, wind, and current. Divide the battery’s usable amp-hours by the motor’s amp draw at the speed you use. Your motor’s manual lists the draw at each speed.
Can I use my old lead-acid charger?
Only if it has a lithium or LiFePO4 mode. Otherwise, buy a lithium charger.
Is a lithium battery worth it for a trolling motor?
Many anglers think so because of the weight savings and steady power. The upfront cost is higher than lead-acid.
Final Thoughts
The LiTime 12V 100Ah is our top pick for its Group 31 fit, Bluetooth monitoring, and cold-weather protection. Choose the Renogy for a compact, IP67 battery, the Redodo 100Ah for value, the LiTime 24V for larger bow-mount motors, and the Redodo 50Ah for kayaks.
About the author
James writes reviews and buying guides for Fishing Hacking, covering rods, reels, line, lures, and the gear anglers rely on. His work focuses on clear criteria, balanced pros and cons, and practical advice to help readers choose equipment that fits how and where they fish.