12V Lithium Battery for Trolling Motor
The LiTime 12V 100Ah is a rechargeable Group 31 LiFePO₄ battery built for trolling motors and other compatible 12V loads. It is rated at 12.8V and 1,280Wh, weighs about 22.2 lb, and adds Bluetooth monitoring and low-temperature protection.
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Will This Battery Work With Your Motor?
Thrust alone does not decide this. LiTime markets the battery for 30–70lb trolling motors, yet Minn Kota’s owner’s manuals list its 70lb motors at 24V, which one 12.8V battery cannot supply. Run this quick check before you buy.
Minn Kota says its motors can run on lithium, but running them above 85% (speed 8.5) for prolonged periods could cause permanent damage, because lithium holds a higher voltage for longer. Follow the exact manual for your motor brand. LiTime states this battery is not for starting batteries, golf carts or jacks.
LiTime 12V 100Ah Specifications
| Property | Detail |
|---|---|
| Brand / model | LiTime 12V 100Ah TM Smart (Bluetooth), Group 31 |
| Reference listing ID | ASIN B0DCVRKJZP |
| Chemistry | Lithium iron phosphate (LiFePO₄), rechargeable |
| Nominal voltage | 12.8 V |
| Rated capacity | 100 Ah |
| Nominal energy | 1,280 Wh |
| BMS rating | 100 A |
| Max continuous discharge | 100 A |
| Max continuous charge | 100 A |
| Max continuous output | 1,280 W (LiTime rating) |
| Surge ratings (LiTime) | 300 A for 5 s; 500 A for 1 s |
| Charging method | CC/CV |
| Charging voltage | 14.4 V ± 0.2 V |
| Recommended charge current | 20 A (0.2C) |
| Charging temperature | 0°C to 50°C (32°F to 122°F) |
| Discharging temperature | −20°C to 60°C (−4°F to 140°F) |
| Storage temperature | −10°C to 50°C (14°F to 122°F) |
| Low-temperature protection | Charging stops below 0°C and resumes at 5°C or above; discharge stops below −20°C |
| Dimensions (L × W × H) | 13 × 6.77 × 8.5 in (about 330 × 172 × 216 mm) |
| Weight | About 22.2 lb (10.07 kg) |
| Terminals | M8 bolts |
| Case / protection rating | ABS housing, IP65 |
| Bluetooth | Bluetooth 5.0 with LiTime app |
| Self-heating | Not listed for this model |
| Expansion | Up to 4S4P (51.2 V, 400 Ah, 20.48 kWh) |
| Cycle life (LiTime claim) | 4,000 cycles at 100% DoD; 6,000 at 80%; 15,000 at 60% |
| Warranty | 5-year limited warranty; original purchaser only, receipt required |
| Compliance listed by LiTime | FCC, CE, RoHS, UN38.3 |
Figures are LiTime’s published ratings and claims, not independent lab results. Temperature ranges, charge settings, terminals and case details come from LiTime’s trolling-motor battery documentation, and LiTime’s 12V 100Ah versions differ from one another. Check them against the manual packed with your unit. One listing field shows 13.07 × 6.81 × 9.41 in, which is worth allowing for when you measure the tray.
Trolling Motor Battery Replacement Difficulty
Lifting a 22.2 lb battery is the easy part. The real work is electrical: confirming voltage, charger and circuit protection. A swap into a lithium-ready 12V set-up is straightforward, a lead-acid conversion adds charger and wiring checks, and a 24V or 36V bank is harder because of series wiring and matching. Tap a slice to highlight it.
- 35% Checking motor & charger fit
- 25% Wiring & circuit protection
- 20% Charger setup & activation
- 20% Lifting & mounting
The 4/10 score and effort split are an editorial estimate for a single 12V battery, not an official rating. Follow your motor manual for wiring and breaker requirements, and ask a marine technician if you are unsure.
How to Replace Your Trolling Motor Battery
This is a general whole-battery swap for a simple single-battery 12V set-up. Tap each step to tick it off as you go.
- 1Check motor, charger and fitConfirm the motor’s voltage and current figures, a LiFePO₄-compatible charger, and enough room for a 13 × 6.77 × 8.5 in battery plus cable clearance.
- 2Charge and activate the new batteryLiTime says to activate Bluetooth by charging with a lithium-activation or MPPT charger on first use. Charge the new battery before installation.
- 3Isolate power and remove the old batterySwitch the motor off, open the breaker or disconnect switch and unplug any charger. On a standard negative-ground set-up, disconnect the negative cable first, then the positive. Lift the old battery out.
- 4Fit the new battery and reconnectSecure it in the tray, then connect the positive cable first and the negative last. Use suitable M8 lugs, fit terminal covers and tighten to the torque stated in the manual supplied with the battery.
- 5Check polarity and run a short testConfirm polarity and voltage with a multimeter, then check the LiTime app. Run the motor briefly at low load, with the propeller in the water, and recheck the connections.
The battery’s 100A BMS does not set your breaker rating. Use the fuse or circuit breaker size your motor manual specifies. Minn Kota’s sizing table lists 50A at 12V for a 30lb motor, 60A at 12V for 50–55lb and 50A at 24V for 70lb.
Check the charge level, the LiTime app for warnings, battery temperature (below −20°C stops discharge), loose connections and a tripped breaker. A battery that will not wake may need a lithium-activation or MPPT charger.
Other Uses for This Battery
LiTime lists marine, RV, camping and energy-storage uses. Always confirm the device’s voltage and current needs first.
- Trolling motors12V-class motors only
- Fish findersCompatible 12V units
- Marine electronicsInstruments & lighting
- Fishing boatsCheck motor voltage first
- RV & camper systemsHouse battery use
- Camping power12V lighting & gear
- 12V DC loadsWithin voltage & 100A
- Solar storageVia a suitable controller
- Off-grid systemsUp to 4S4P banks
- Home backupWithin 100A limit
- Inverter systemsCompatible inverter needed
- Series & parallel banksIdentical units only
Engine starting, golf carts or jacks (per LiTime), or any load above 100A continuous. LiTime sells a separate OBM battery for electric outboards. One battery cannot run a 24V or 36V motor.
Safety, Storage & Disposal
This battery can deliver up to 100A continuously. Cover the terminals, keep tools and loose metal away, and fit the circuit protection your motor manual requires.
- Charge only with a LiFePO₄-compatible charger.
- For long storage, LiTime advises about 50% charge, with a check every three months.
- IP65 means dust-tight and water-jet resistant, not submersible.
- Keep old lithium batteries out of household rubbish and kerbside recycling.
- Tape exposed terminals or bag the battery, then take it to a recycling or hazardous-waste collection.
12V Trolling Motor Battery: FAQ
What is the LiTime 12V 100Ah trolling motor battery?
It is a rechargeable Group 31 LiFePO₄ battery rated at 12.8V, 100Ah and 1,280Wh. LiTime markets it for trolling motors and other compatible 12V loads, with Bluetooth monitoring and low-temperature protection.
Can one battery run any 30–70lb trolling motor?
No. Voltage decides this, not thrust alone. Minn Kota’s owner’s manuals list 70lb motors at 24V, and one 12.8V battery cannot supply that. Check the voltage and current figures in your motor manual first.
How long will it run my trolling motor?
Runtime depends on the motor’s average current draw. As a rough calculation, 100Ah at a steady 20A is about 5 hours, and at 50A about 2 hours. Real results vary with speed, conditions and temperature.
What charger does it need?
Use a LiFePO₄-compatible charger. LiTime’s trolling-motor documentation lists a charging voltage of 14.4V ± 0.2V and a recommended charging current of 20A (0.2C). LiTime also says to activate Bluetooth by charging with a lithium-activation or MPPT charger on first use or after switching off.
Does it charge in freezing weather?
No. Charging stops when the battery is below 0°C (32°F) and resumes at 5°C (41°F) or above. Discharging stops below −20°C (−4°F). LiTime does not list a self-heating feature for this model.
Can it start an engine?
No. LiTime says it is for energy storage, not for starting batteries, golf carts or jacks. The short surge ratings do not make it a cranking battery.
Is it waterproof?
It carries an IP65 rating, which means dust-tight and protected against water jets. IP65 does not cover submersion. Keep it in a dry, secured spot.
Why won’t my new battery connect to the app?
LiTime says Bluetooth is activated by charging with a lithium-activation or MPPT charger, on first use or after the battery has been switched off.
Can I connect more than one?
Yes. LiTime lists expansion up to 4S4P (51.2V, 400Ah, 20.48kWh) using identical LiTime batteries with the same capacity and BMS rating.
How should I store it?
LiTime’s general LiFePO₄ storage guidance is about 50% charge with the battery switched off, plus a check every three months.
How do I dispose of an old battery?
Do not put it in household rubbish or kerbside recycling. The US EPA advises taking lithium-ion batteries to a recycler or household hazardous-waste collection, with terminals taped or each battery bagged separately.
