Loading page content, please wait...
DAD5
Talk with a technical expert.
36V trolling motor battery
A lightweight 36V 50Ah lithium battery for anglers upgrading from heavy lead-acid trolling motor banks.
The Epoch 36V 50Ah Group 31 Marine Trolling Motor Battery is a compact 36V trolling motor battery, 36V 50Ah lithium battery, and Group 31 marine battery upgrade for anglers who want one lightweight 36V deep cycle lithium power source instead of three heavy 12V lead-acid batteries. Built with LiFePO4 chemistry, internal self-heating, Bluetooth battery monitoring, advanced BMS protection, and an IP65 weatherproof enclosure, it delivers 1.92kWh of clean marine power for compatible trolling motor systems.
Replace three heavy 12V lead-acid batteries with one compact 36V deep cycle lithium battery.
This Epoch 36V 50Ah lithium battery simplifies a traditional 36V trolling motor setup by combining the power of a three-battery lead-acid bank into one maintenance-free LiFePO4 drop-in replacement. At approximately 35 lbs, it removes significant weight from the bow or battery compartment while freeing up valuable boat storage space.
The Group 31 marine footprint gives anglers a familiar fitment path: 13.0 in L × 6.8 in W × 9.44 in H. Always verify tray dimensions, hold-down straps, cable clearance, terminal orientation, and charger compatibility before replacing your current boat battery bank.
Efficient 36V marine lithium performance for fishing boats and trolling motor systems.
With 1.92kWh of stored energy, 100A continuous discharge capability, and a flat LiFePO4 discharge curve, this 36V trolling motor battery helps maintain strong voltage and consistent thrust through most of the battery’s usable capacity. That means less voltage sag compared with traditional lead-acid banks and more predictable power on the water.
This battery is designed for compatible 36V trolling motor platforms, including systems commonly used with Minn Kota, Garmin, and Lowrance trolling motors when voltage, current draw, charger profile, and manufacturer battery requirements match. For longer fishing days or heavier current and wind, add runtime by wiring matched 3650A-H batteries in parallel up to Epoch’s stated limits.
Dust-tight. Water-jet resistant. Built for demanding boat environments.
The sealed IP65 enclosure helps protect the battery from dust, rain, spray, and low-pressure water jets, giving anglers dependable protection for wet decks, splashes, and outdoor use. Shoppers comparing IP67 waterproof marine battery options should note that this model is IP65 rated, not submersible; install it where standing water cannot collect around the battery, terminals, or wiring.
Know your state of charge before the next cast.
Internal self-heating helps support cold-weather charging, while the Bluetooth battery monitor lets you check state of charge, voltage, current, and battery status through compatible iOS and Android apps. It is especially useful for anglers who want real-time battery confidence without guessing how much runtime remains.
Marine trolling motors, fishing boats, and compatible 36V power systems.
Smart marine lithium performance with cold-weather charging support.
Recommended add-ons for a complete 36V marine installation.
Full technical details, dimensions, weight, current ratings, and 36V charging settings.
Dust-tight and water-resistant for demanding outdoor use.
The IP65-rated enclosure is designed for dust-tight protection and resistance to low-pressure water jets, making it suitable for many trolling motor, fishing boat, and outdoor marine installations. It should not be submerged, pressure washed, or mounted where water can pool around the battery or terminals.
More usable energy. Less weight. Longer service life.
LiFePO4 technology provides stable voltage output, long cycle life, fast charging capability, and maintenance-free operation. Compared with traditional lead-acid trolling motor batteries, this Epoch lithium battery delivers efficient 36V energy storage in a lighter package while eliminating watering, acid maintenance, and routine lead-acid service.
Verify your trolling motor, charger, and battery tray before installation.
Always confirm Group 31 tray fitment, cable clearance, terminal compatibility, trolling motor current requirements, charger compatibility, and system requirements before installation. Use a 36V LiFePO4-compatible marine charger, inverter charger, solar charge controller, or DC-to-DC charger programmed within Epoch’s recommended charging parameters. Do not wire this battery in series. For parallel battery banks, use matched batteries of the same model, age, capacity, and state of charge, and follow Epoch’s installation guidelines.
Common questions about trolling motor runtime, fitment, charging, Bluetooth monitoring, and parallel expansion.
Yes. This battery is built around a Group 31 marine footprint and measures 13.0 in L × 6.8 in W × 9.44 in H. It is designed as a drop-in lithium upgrade for many existing trays and straps, but you should verify tray size, cable clearance, terminal orientation, and hold-down fitment before installation.
For many tournament and weekend anglers, 50Ah of usable LiFePO4 energy provides strong full-day runtime in moderate wind, current, and boat-load conditions. Runtime depends on thrust setting, motor efficiency, boat weight, wind, current, and how aggressively the motor is used. For extended runtime, multiple batteries can be wired in parallel.
Yes. Use a dedicated 36V LiFePO4-compatible marine charger or programmable lithium charger. Recommended settings include 42.6V–43.2V bulk/absorption voltage, float disabled preferred or set to 40.0V–40.8V, equalization disabled, and temperature compensation disabled.
Yes. This battery can be wired in parallel, up to four batteries, to increase capacity. For example, two batteries in parallel create a 36V 100Ah bank. Do not wire this model in series; it is limited to one battery in series and up to four in parallel.
Yes, in compatible 36V systems this single 36V lithium battery can replace a traditional three-battery 12V lead-acid trolling motor bank. Confirm your trolling motor voltage, charger compatibility, tray dimensions, cable sizing, and manufacturer requirements before replacing an existing battery bank.
This model is IP65 rated, which means it is dust-tight and protected against water jets for demanding outdoor and marine environments. It is not intended for submersion, pressure washing, or installation where standing water can collect around the battery, terminals, or wiring.
Yes. Bluetooth monitoring allows compatible iOS and Android devices to view important battery data such as state of charge, voltage, current, and battery status, helping anglers track remaining power while on the water.
The built-in heating system helps support charging in cold conditions when paired with a compatible charger. The battery also includes low-temperature charge protection through the BMS. Always follow Epoch charging guidance and avoid charging outside the approved temperature range.
This battery is designed for compatible 36V trolling motor systems, including systems commonly used with brands such as Minn Kota, Garmin, and Lowrance, when voltage and current requirements match. Always confirm your motor manufacturer’s battery requirements before installation.
No. This model is a 36V deep-cycle LiFePO4 battery for trolling motor and compatible 36V power applications. It is not designed for engine cranking or outboard starting applications.
Our IP65 rating delivers serious peace of mind. Your battery is completely dust-tight and protected against low-pressure water jets from any direction, so rain, splashes, and wash-downs are no match for it. It's built to perform reliably in demanding outdoor and marine environments.