9 Best Deep-Cycle Batteries for Trolling Motors (November 2026)
The best deep-cycle marine batteries for trolling motors include the Interstate Batteries 12V 35Ah SLA AGM Deep for a compact 12V setup, the SUPER EMPOWER 12V 100Ah LiFePO4 Battery for high capacity in Group 24, and the Newport 12V 50Ah Deep Cycle AGM Marine for small marine setups.
On this page (6 sections)
The best deep cycle battery for a trolling motor must match the motor's voltage and current draw, with enough capacity for the time you plan to spend on the water. Newport's 12V 50Ah AGM is designed for marine trolling motor use, while the 100Ah lithium picks suit buyers seeking higher capacity with less battery weight.
A deep-cycle marine battery for trolling motors is meant to supply power over time. The right choice still depends on your motor, battery space, terminal type and charging setup.
Our guide to what a deep cycle battery is covers the basics before you compare chemistries.
Our picks at a glance
-
1
Best for a compact 12V setupInterstate Batteries 12V 35Ah SLA AGM Deep
9.7/10 our score
See it on Amazon -
2
Best for high capacity in Group 24SUPER EMPOWER 12V 100Ah LiFePO4 Battery
9.5/10 our score
See it on Amazon -
3
Best for small marine setupsNewport 12V 50Ah Deep Cycle AGM Marine
9.4/10 our score
See it on Amazon
- 4
Check itRenogy 12 Volt 100Ah Deep Cycle AGM
Best for larger AGM capacity - 5
Check itBtrPower 12V 50Ah Trolling Motor LiFePO4 Battery
Best for a lighter 50Ah battery - 6
Check itECO-WORTHY Portable 12V Lithium Battery
Best for small, portable loads - 7
Check itSUPER EMPOWER 12.8V 100Ah LiFePO4 Battery
Best for a Group 31 lithium fit - 8
Check itMighty Max Battery 12V 55Ah Power Boat
Best for a 55Ah AGM option - 9
Check itVMAXTANKS QTY2 VMAX MR137-120 12V 120AH AGM
Best for a 24V AGM bank
How we chose deep-cycle batteries for trolling motors
We compared the stated battery chemistry, capacity, voltage, terminals and motor fit for sustained electric trolling motor operation. Our score weighs specs, features and buyer feedback against what you're shopping for.
A battery marked 12V does not automatically suit every 12V motor. Check the motor's maximum current draw, the battery's BMS or discharge limits, and the connection type before you buy.
Compare these marine deep-cycle batteries
The table highlights capacity, chemistry and key fit details so you can narrow the options before reading each pick. Verify the final battery dimensions and terminals against your tray and cable connections.
| Product | Best for | Capacity | Voltage | Terminals | Our score |
|---|---|---|---|---|---|
| Interstate Batteries 12V 35Ah SLA AGM Deep | a compact 12V setup | 35Ah | 12V | Insert terminal | 9.7 |
| SUPER EMPOWER 12V 100Ah LiFePO4 Battery | high capacity in Group 24 | 100Ah | 12.8V | 9.5 | |
| Newport 12V 50Ah Deep Cycle AGM Marine | small marine setups | 50Ah | 12V | 9.4 | |
| Renogy 12 Volt 100Ah Deep Cycle AGM | larger AGM capacity | 100Ah | 12V | 9.4 | |
| BtrPower 12V 50Ah Trolling Motor LiFePO4 Battery | a lighter 50Ah battery | 50Ah | 12.8V | 9.3 | |
| ECO-WORTHY Portable 12V Lithium Battery | small, portable loads | 20Ah | 12.8V | 9.2 | |
| SUPER EMPOWER 12.8V 100Ah LiFePO4 Battery | a Group 31 lithium fit | 100Ah | 12.8V | 9.1 | |
| Mighty Max Battery 12V 55Ah Power Boat | a 55Ah AGM option | 55Ah | 12V | 8.5 | |
| VMAXTANKS QTY2 VMAX MR137-120 12V 120AH AGM | a 24V AGM bank | 120Ah each | 12V each | 8.0 |
Deep-cycle battery picks for trolling motors
These picks cover compact AGM, marine-focused AGM, and lithium options in several capacities. For chemistry-specific alternatives, see LiFePO4 deep-cycle batteries.
The best match is the one that meets your motor's voltage and current needs while leaving enough reserve for your trip.
Interstate Batteries 12V 35Ah SLA AGM Deep: Best for a compact 12V setup
- 12V, 35Ah
- Sealed AGM and VRLA construction
- Insert terminals
- Group U1 or GT9L size
A compact sealed AGM option with 35Ah capacity for compatible 12V setups. Check the motor's current needs and the insert-terminal connection before choosing it.
Pros
- Sealed, maintenance-free AGM construction
- Compact Group U1 or GT9L size
Cons
- 35Ah capacity may not suit long outings
- Not a golf cart battery replacement
The Interstate 12V 35Ah battery is the highest-scoring pick here for a compact AGM setup. It is sealed, rechargeable and maintenance-free, with insert terminals and a stated Group U1 or GT9L size.
Its 35Ah capacity is best considered for a modest load or shorter outing, after checking the motor's draw. Interstate describes the DCM line as developed for heavy-demand deep-cycle uses, but this model is also designed for mobility devices.
Confirm that your motor's connector works with insert terminals or that you have a safe compatible cable. If the fit is too bulky, compare a small trolling motor battery sized for compact boats and kayaks.
SUPER EMPOWER 12V 100Ah LiFePO4 Battery: Best for high capacity in Group 24
- 12.8V, 100Ah
- Group 24 size
- 100A BMS
- M8 terminals
This Group 24 lithium battery pairs 100Ah capacity with a 100A BMS. It is designed for energy storage, not engine starting, and needs a lithium-compatible charging setup.
Pros
- 100Ah capacity
- Group 24 size with M8 terminals
- Low-temperature charging protection
Cons
- Charging pauses below 32°F
- Not suitable for engine cranking
SUPER EMPOWER's 12.8V 100Ah lithium battery offers substantial capacity in a Group 24 format. It weighs 21.6 lb and has M8 terminals, dimensions that can help with planning a battery box or tray.
A built-in 100A BMS manages charging and discharging and includes protections for overcharge, over-discharge, overcurrent, short circuit and temperature conditions. Charging pauses below 32°F, and the battery is intended for energy storage rather than engine starting.
Use a LiFePO4 charger or a compatible controller set to lithium mode. If lithium is your priority, see our guide to the best lithium battery for a trolling motor.
Newport 12V 50Ah Deep Cycle AGM Marine: Best for small marine setups
- 12V, 50Ah
- AGM lead-acid
- Marine terminals
- Designed for trolling motors
Newport's sealed 50Ah AGM battery is designed for trolling motors and marine electronics. Its maker describes it as a fit for kayaks, inflatable boats and other small watercraft.
Pros
- Marine-focused deep-cycle design
- Sealed AGM construction
- Marine terminals
Cons
- 32 lb may be heavy for carry-in use
- 50Ah may be limited for long or high-draw runs
The Newport 12V 50Ah AGM is the clearest marine-specific choice in this group. Newport describes it for trolling motors and marine electronics, and says its compact form suits kayaks, inflatable boats and small craft.
It weighs 32 lb and uses marine terminals. That weight may be manageable in a boat with a fixed battery tray, but it is worth considering if you carry gear from a vehicle to the launch.
The 50Ah capacity is a middle-ground choice for a 12V system. Match it to your motor's current draw and check that the marine terminals work with your cables.
Renogy 12 Volt 100Ah Deep Cycle AGM: Best for larger AGM capacity
- 12V, 100Ah
- AGM lead-acid
- Up to 4 batteries in parallel
- M8 terminal bolts
This 100Ah AGM option gives a 12V system more capacity than the smaller batteries here. Renogy recommends keeping discharge above 50% to avoid shortening cycle life.
Pros
- 100Ah capacity
- Sealed AGM construction
- Supports up to 4 batteries in parallel
Cons
- Heavier than the compact options
- Plan around Renogy's recommended discharge limit
Renogy's 12V 100Ah AGM is a higher-capacity lead-acid choice for buyers who prefer sealed AGM construction. It supports up to 4 batteries in parallel, and Renogy says its batteries can be connected in series without a stated limit.
Renogy recommends avoiding discharge below 50% to help prevent shorter cycle life. That guidance matters when estimating usable capacity: don't assume all 100Ah is available for each outing.
The battery measures 13.1 x 6.9 x 8.6 in. Check both this footprint and the motor's current needs before choosing it for a boat with limited space.
BtrPower 12V 50Ah Trolling Motor LiFePO4 Battery: Best for a lighter 50Ah battery
- 12.8V, 50Ah
- 11 lb
- 50A BMS
- Designed for 30–50 lb thrust motors
BtrPower positions this 50Ah lithium battery for 30–50 lb thrust trolling motors. Its 11 lb weight can make carrying and fitting the battery easier than with many lead-acid options.
Pros
- 11 lb weight
- 50A BMS protection
- Designed for trolling motors
Cons
- Charging calls for a lithium charger
- Check motor current draw against the 50A BMS
BtrPower's 12V 50Ah LiFePO4 battery weighs 11 lb and is described for 30–50 lb thrust trolling motors. Its 50A BMS protects against overcharge, over-discharge, overcurrent and short circuit.
The lighter weight can help if you remove the battery after each trip or carry it to a kayak. The capacity is less than the 100Ah options, so estimate run time from your motor's expected draw.
BtrPower recommends a lithium charger with 14.4–14.6V output and a charging current of 10A or less. For more low-weight choices, compare lightweight trolling motor batteries.
ECO-WORTHY Portable 12V Lithium Battery: Best for small, portable loads
- 12.8V, 20Ah
- 5.4 lb
- Built-in 20A BMS
- Bluetooth monitoring
At 20Ah and 5.4 lb, this lithium battery suits a compact setup where low weight matters. Check both the motor's current draw and expected run time, since capacity is lower than the other picks.
Pros
- Lightweight and compact
- Bluetooth monitoring
- Built-in BMS
Cons
- 20Ah capacity limits run time
- 20A BMS may not suit every motor
ECO-WORTHY's 20Ah lithium battery weighs 5.4 lb and includes Bluetooth monitoring for voltage, current and capacity. Its small size and low weight may fit a kayak or a light-duty setup with modest power needs.
The built-in 20A BMS and 5A DC output port make the battery more suited to small loads than to every trolling motor. Check your motor's draw carefully, because a load above the battery's limits can lead to shutdown or poor fit.
For a kayak, low weight can matter as much as capacity. See the guide to the best trolling motor battery for a kayak for more compact options.
SUPER EMPOWER 12.8V 100Ah LiFePO4 Battery: Best for a Group 31 lithium fit
- 12.8V, 100Ah
- Group 31 size
- 100A BMS
- M8 terminals
This Group 31 lithium battery offers 100Ah capacity in a stated 20.94 lb package. Check your tray and charging system, since it needs a lithium-compatible charging profile.
Pros
- 100Ah capacity
- Group 31 size with M8 terminals
- Low-temperature charging protection
Cons
- Charging pauses below 32°F
- Not suitable for engine cranking
This SUPER EMPOWER 12.8V 100Ah battery uses a Group 31 format and weighs 20.94 lb. The 100A BMS and M8 terminals suit buyers looking for high capacity in a lighter package than many AGM batteries.
The battery is designed for energy storage and not engine starting. Charging pauses below 32°F, so cold-weather users need to account for that limit and choose a compatible lithium charger.
Measure your tray before buying: Group 31 dimensions are 6.77 x 13.18 x 9.05 in. For a battery sized to a particular footprint, our Group 27 trolling motor battery guide explains what to check.
Mighty Max Battery 12V 55Ah Power Boat: Best for a 55Ah AGM option
- 12V, 55Ah
- SLA/AGM
- F2 terminals
- Maintenance-free construction
This sealed 55Ah battery is made for boat and electric trolling motor use. It includes screws, but no wire harness or mounting accessories.
Pros
- 55Ah capacity
- Sealed AGM construction
- Can be mounted in any position
Cons
- No wire harness or mounting accessories
- Confirm F2 terminal fit
Mighty Max's 12V 55Ah sealed battery is specifically described for boat and electric trolling motor use. It is an SLA/AGM battery with F2 terminals and dimensions of 9.06 x 5.43 x 8.98 in.
The included components are the battery and screws, with no wire harness or mounting accessories. Check cable ends and tray dimensions before ordering, especially if your current setup uses a different terminal style.
A 55Ah capacity may suit a moderate 12V load, depending on motor draw and desired run time. For a broader comparison of lead-acid batteries for trolling motors, focus on capacity and fit as well as chemistry.
VMAXTANKS QTY2 VMAX MR137-120 12V 120AH AGM: Best for a 24V AGM bank
- Two 12V, 120Ah AGM batteries
- Group 31
- Marine terminals
- 75 lb each
This pair of Group 31 AGM batteries is described for a 24V trolling motor setup. Each battery weighs 75 lb, so plan for the combined weight and secure mounting.
Pros
- Two batteries for a compatible 24V system
- 120Ah per battery
- Maintenance-free AGM construction
Cons
- 75 lb per battery
- Large and heavy for small boats
VMAXTANKS sells this pick as a pair of 12V 120Ah Group 31 AGM batteries for a 24V trolling motor. Compare more AGM deep-cycle batteries for other capacities and uses.
Each battery weighs 75 lb, so the pair calls for a sturdy, secure installation and careful handling.
The marine terminals and maintenance-free AGM construction are suited to a fixed boat installation. Confirm that your motor is designed for a 24V bank and follow the battery and motor wiring instructions when connecting the pair.
If you are considering lithium, compare 24V LiFePO4 batteries.
This option is intended for buyers who need two high-capacity batteries and have room for their combined weight. If you're comparing system voltage, see our guides to 36V trolling motor batteries and 24V trolling motor batteries.
How to choose a deep-cycle marine battery for your motor
Match the battery bank to the motor's required voltage first, then choose capacity based on expected current draw and run time. A larger amp-hour number can extend use, but it also usually needs more space and weighs more.
What voltage and capacity should you choose?
Use the voltage printed in your motor manual or on its label. A 24V motor needs a compatible 24V battery bank, and a 36V motor needs a compatible 36V bank.
For a rough run-time estimate, divide usable amp-hours by the motor's current draw in amps. Actual time changes with speed, load, water and battery limits, so plan a reserve rather than draining the battery fully.
Should you choose AGM or LiFePO4?
AGM batteries are sealed and don't require watering, while LiFePO4 options in this roundup weigh less for their stated capacity. Lithium batteries need charging equipment that matches their chemistry, and some models pause charging below a set temperature.
Consider the full setup, including charger, tray, cables and how often you carry the battery. The best 12V lithium battery for a trolling motor guide narrows the choice to 12V models.
Check battery cables, plugs and mounting before buying
A good battery fit includes safe wiring and a secure tray, not just matching voltage. The terminals, cable gauge, connectors and breaker need to suit the motor and its instructions.
Do the terminals and cables match?
Check whether the battery uses insert, M8, F2 or marine terminals, then confirm that your cable ends fit securely. Use the motor maker's wiring guidance to choose cable size and protect the connection from water and movement.
Our guides to trolling motor battery cables and trolling motor battery plugs cover connection choices. A quick connector for a trolling motor battery can help with removal when its rating and wiring match your setup.
What safety and mounting parts should you check?
Use a battery tray that fits the battery and holds it in place as your boat moves. A correctly rated breaker and a disconnect switch can help with circuit protection and maintenance, but follow the motor maker's instructions for placement and wiring.
Compare a trolling motor battery tray, battery breaker and battery switch with your system's requirements. If you need backup power for camp or home devices, a cheap outdoor portable power station is a different type of solution from a motor battery.
Which deep-cycle battery should you choose?
Choose the Newport if you want a marine-focused 12V 50Ah AGM battery, the BtrPower if low weight and a 50Ah lithium format matter, or SUPER EMPOWER's 100Ah option if your setup needs more capacity. Before buying, match voltage, current limits, charging profile, terminals and tray dimensions to your motor.
Our top 3 picks at a glance
-
1
Best for a compact 12V setup
Interstate Batteries 12V 35Ah SLA AGM Deep
9.7/10 our score
See it on Amazon -
2
Best for high capacity in Group 24
SUPER EMPOWER 12V 100Ah LiFePO4 Battery
9.5/10 our score
See it on Amazon -
3
Best for small marine setups
Newport 12V 50Ah Deep Cycle AGM Marine
9.4/10 our score
See it on Amazon
Frequently asked questions
What size deep-cycle battery does a trolling motor need?
Start with the motor's required voltage and current draw, then choose capacity for the run time you need. A 12V motor needs a compatible 12V battery or bank, while 24V and 36V motors need the matching voltage.
Check the motor manual and battery limits before connecting anything.
Is AGM or lithium better for a trolling motor?
AGM batteries are sealed and often cost less upfront, while LiFePO4 batteries weigh less for similar capacity and need a compatible charging profile. The right choice depends on your load, budget, boat space and charging gear.
Compare lead-acid trolling motor batteries with lithium batteries for trolling motors.
Can I use a marine deep-cycle battery for a trolling motor?
Yes, if its voltage, current limits and terminals match the motor and installation. A marine deep-cycle battery is designed to supply power over time, but its capacity still needs to fit the motor's draw and your planned trip.
Secure the battery and protect its wiring from water and movement.
How do I estimate trolling motor battery run time?
A rough estimate divides usable amp-hours by the motor's current draw in amps. Actual run time varies with speed, load, conditions and battery limits, so treat the calculation as a planning estimate.
Keep a reserve instead of planning to use every amp-hour.
Can I connect two 12V batteries for a 24V trolling motor?
Two compatible 12V batteries connected in series can provide 24V, but follow the motor and battery instructions for wiring. Use batteries with matching voltage, chemistry and capacity, and confirm that the charger supports the resulting bank.
See our 24V trolling motor battery guide for options.
