LiFePO4 vs AGM Battery for Trolling Motor: Which to Buy?

The short answer on lifepo4 vs agm battery for trolling motor: pick LiFePO4 if you want more cycles, a built-in BMS and less weight per amp-hour, and pick AGM if you want a dual-purpose battery that also cranks the outboard and fits your existing charger. We compared two LiFePO4 and one AGM 100Ah battery on what each listing states: voltage, weight, BMS, cycle claims, monitoring and warranty. The LOSSIGY 36V example brings a 200A BMS and a 5-year warranty; the Interstate AGM example is the only dual-purpose cranking battery here.

SolarKitHQ earns a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure.

LiFePO4 vs AGM: side by side

Specifications are manufacturer rated as listed, collected 21 October 2026.

Weight and capacity

All three are 100Ah, but the voltages differ. The GOKWH 12V example weighs 24 pounds against the Interstate 12V AGM example at 64.5 pounds for the same 12V 100Ah size. The LOSSIGY is a 36V battery at 66.9 pounds, so compare it on its own terms rather than against the 12V pair. The GOKWH listing claims about one-third the weight of a same-capacity AGM battery, which lines up with its 24-pound figure next to the Interstate’s 64.5 pounds.

BMS and protections

Both LiFePO4 listings state a battery management system, and the Interstate AGM listing states none. The LOSSIGY example lists a 200A BMS with protection against overcharging, overdischarging, overcurrent, short circuit and high/low temperature, plus 1000A peak current. The GOKWH example lists a 100A BMS with over-charge, over-discharge, short circuit, over-current and overheating protection, plus a low-temperature discharge cutoff at -4°F. For trolling motor use, the BMS is the clearest line between the two sides.

Cycles and lifespan claims

The LOSSIGY example states at least 4,000 cycles, and the GOKWH example states 4,000+ cycles with up to a 10-year lifespan. The Interstate AGM example states no cycle figure, only that its service life runs 2x longer than conventional alloy AGM and 3x a conventional flooded battery. Do not rank the AGM on cycles: the listing leaves that figure unclear, which is a gap in the listing, not a win for either side.

What the listings leave unclear

The GOKWH spec table lists the warranty description as “/”, so no warranty term can be confirmed. The LOSSIGY spec table lists the warranty description as “5” while the bullets state a 5-year warranty; we trusted the bullets. The LOSSIGY listing also pairs an IP65 code with a water-resistance claim; only the IP65 code is checkable. See our lithium vs lead acid battery for solar comparison for the same chemistry debate on the solar side.

Three examples

#	Product	Solar Score	Buy
1	LOSSIGY 36V 100Ah	9.7/10	Buy on Amazon
2	GOKWH 12V 100Ah	9.6/10	Buy on Amazon
3	Interstate 31M AGM	9.5/10	Buy on Amazon

1

LOSSIGY 36V 100Ah

LOSSIGY·9.7/10 Solar Score

i

The Solar Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 36V 100Ah LiFePO4 battery with a 200A BMS, a 25A charger and a touch screen monitor, suited to 36V trolling motors.

Check price on Amazon

Pros

• 200A BMS with 1000A peak current stated
• 43.8V 25A charger and touch screen monitor included
• 4,000+ cycles stated
• 5-year warranty stated

Cons

• 66.9 pounds, the heaviest here
• 36V only, not for 12V motors
• Spec table warranty reads '5' with no unit
• Cannot be connected in series, parallel only

Detailed Review

The listing states a 36V 100Ah LiFePO4 battery with a built-in 200A BMS, 1000A peak current, 3840W, IP65, a 43.8V 25A smart charger that charges in 4 hours, Bluetooth monitoring and a touch screen monitor. It measures 20.47 by 10.59 by 8.66 inches at 66.9 pounds and states at least 4,000 cycles. The bullets state a 5-year warranty while the spec table warranty description reads only '5'; we trusted the bullets.

Who it's for: anglers running a 36V trolling motor who want the strongest BMS and warranty statements here. Who should skip it: anyone with a 12V motor or a tight battery compartment.

Its Solar Score of 9.7/10 comes from performance 32/35, build 21/25, value 20/25, safety 8/10 and warranty 5/5: 86 of 100 points, placed on our 9.2 to 9.8 scale.

Key Specifications

Capacity	36V, 100Ah
BMS	200A, 1000A peak
Charge	43.8V 25A charger, 4 hours
Weight	66.9 lb

Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.

Safety and Warranty

What this listing states. 200A BMS with overcharge, overdischarge, overcurrent, short circuit and temperature protection, IP65 stated, so safety scores 8 of 10. 5-year warranty stated, so warranty scores 5 of 5. See How We Pick.

Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

2

GOKWH 12V 100Ah

GOKWH·9.6/10 Solar Score

i

The Solar Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 12.8V 100Ah LiFePO4 battery at 24 pounds with Bluetooth monitoring, suited to 12V trolling motors.

Check price on Amazon

Pros

• 24 pounds for 12V 100Ah, the lightest here
• 100A BMS with low-temperature discharge cutoff
• Bluetooth 5.0 monitoring stated
• 4,000+ cycles and up to 10-year lifespan stated

Cons

• No warranty term is stated
• No charger is included or stated
• 100A BMS is smaller than the LOSSIGY 200A
• 12V only, needs 4P4S for higher voltage

Detailed Review

The listing states a 12.8V 100Ah LiFePO4 battery with 1280Wh, a built-in 100A BMS, Bluetooth 5.0 monitoring of level, voltage, current and temperature, 4,000+ cycles and up to a 10-year lifespan, at 24 pounds with 4P4S expansion to 51.2V and 20.5kWh. The spec table warranty description reads '/', so no warranty term can be confirmed, and no charger is stated.

Who it's for: anglers who want a light 12V lithium battery with phone monitoring for a trolling motor. Who should skip it: anyone who wants a stated warranty or an included charger.

Its Solar Score of 9.6/10 comes from performance 30/35, build 21/25, value 21/25, safety 7/10 and warranty 0/5: 79 of 100 points, placed on our 9.2 to 9.8 scale.

Key Specifications

Capacity	12.8V, 100Ah, 1280Wh
BMS	100A, low-temp cutoff
Weight	24 lb
Monitoring	Bluetooth 5.0

Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.

Safety and Warranty

What this listing states. 100A BMS with over-charge, over-discharge, short circuit, over-current and overheating protection stated, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.

Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

3

Interstate 31M AGM

Interstate Batteries·9.5/10 Solar Score

i

The Solar Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 12V 100Ah dual-purpose AGM battery with 825CCA, suited to boats that need cranking and trolling power in one.

Check price on Amazon

Pros

• Dual-purpose: cranking plus deep-cycle stated
• 825CCA stated
• 2-year manufacturer warranty stated
• Group 31M marine terminals

Cons

• 64.5 pounds, the heaviest 12V here
• No BMS or protection features stated
• No cycle figure stated, only 2x-3x life claims
• Lead-acid chemistry needs compatible charger settings

Detailed Review

The listing states a 12V 100Ah Group 31M dual-purpose AGM battery with 825CCA, thick plates for deep cycling and marine terminals, at 64.5 pounds. It claims 2x the service life of conventional alloy AGM and 3x a conventional flooded battery, but states no cycle figure. The warranty is 2 years manufacturer. No BMS or protection features are stated.

Who it's for: boat owners who want one battery to crank the outboard and run the trolling motor. Who should skip it: anyone who wants a BMS, cycle figures or the lightest 12V option.

Its Solar Score of 9.5/10 comes from performance 26/35, build 20/25, value 20/25, safety 0/10 and warranty 4/5: 70 of 100 points, placed on our 9.2 to 9.8 scale.

Key Specifications

Capacity	12V, 100Ah
Cranking	825CCA
Weight	64.5 lb
Warranty	2-year manufacturer

Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.

Safety and Warranty

What this listing states. No battery management system, protection or listing is stated, so safety scores zero. 2-year manufacturer warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.

Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

As an Amazon Associate I earn from qualifying purchases.

How we scored them

The Solar Score weighs performance, build, value, safety and warranty. For trolling motor batteries, safety means a battery management system, stated protections or a weather code; both LiFePO4 examples state these, and the AGM example does not. Two of the three state a warranty term, from 2 years to 5 years. How we pick explains the weights.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

lifepo4 vs agm battery for trolling motor: which should you choose?

Choose LiFePO4 if you want the most cycles and a BMS watching the cells: the LOSSIGY suits a 36V trolling motor with its included 43.8V 25A charger and touch screen monitor, and the GOKWH suits a 12V motor at 24 pounds with Bluetooth monitoring. Choose AGM if you need one battery that cranks the outboard and runs the trolling motor: the Interstate example is dual-purpose with 825CCA. Also see our 12v vs 24v battery for trolling motor guide before choosing a voltage.

Sizing Notes

• Match the battery’s stated voltage to your trolling motor: 36V on the LOSSIGY, 12V on the GOKWH and Interstate.
• Match the BMS current to your motor’s draw: 200A stated on the LOSSIGY, 100A on the GOKWH.
• Check the warranty term: 5 years stated on the LOSSIGY, 2 years on the Interstate, none stated on the GOKWH.
• Keep charger settings matched: the LOSSIGY includes a 43.8V 25A charger; the other listings state no charger.

Frequently Asked Questions

Is LiFePO4 lighter than AGM for trolling motors?

In this group, the GOKWH 12V 100Ah example weighs 24 pounds against the Interstate 12V 100Ah AGM at 64.5 pounds. The LOSSIGY is a 36V battery at 66.9 pounds, so compare it separately.

Which batteries here have a BMS?

Both LiFePO4 examples: 200A on the LOSSIGY with 1000A peak current, and 100A on the GOKWH with a low-temperature discharge cutoff at -4°F. The Interstate AGM states no BMS.

Which battery can also start the outboard?

The Interstate AGM: it is a dual-purpose battery with 825CCA for cranking plus deep-cycle power. The LiFePO4 examples state no cranking figure.

Which has the longest stated warranty?

The LOSSIGY at 5 years, then the Interstate at 2 years. The GOKWH listing states no warranty term.

Still deciding? Our top pickLOSSIGY 36V 100Ah

Check price on Amazon

Related guides

See every Deep Cycle and RV Batteries guide and all Batteries and Charging guides. For the motor itself, see the best 12v battery for electric trolling motor.