12V 50Ah Essential Series LiFePO4 Battery (0.64kWh)
Kayak, marine, and compact off-grid power
A lightweight 12V 50Ah lithium battery for kayak trolling motors, marine fish finders, small off-grid power, and portable 12V systems.
The Epoch 12V 50Ah Essential Series LiFePO4 battery delivers 640Wh of usable deep-cycle energy in a compact 14.3 lb package. Built for kayak anglers, small boaters, RV owners, and DIY power-box builders, this Bluetooth-enabled battery combines stable LiFePO4 output, smart BMS protection, IP54 weather resistance, and an 11-year manufacturer warranty in one zero-maintenance 12V lithium upgrade.
A lightweight 12V deep-cycle battery for kayaks, small boats, and portable off-grid power.
Kayak anglers and small boaters have to protect every pound of payload. Replacing a heavy lead-acid battery with this compact 12V 50Ah lithium battery can dramatically reduce battery weight, improve handling, free up storage space, and make the battery easier to carry from truck to launch.
With 640Wh of usable LiFePO4 energy, a flat voltage curve, and maintenance-free operation, this battery is built for users who want reliable runtime without water maintenance, acid fumes, or the voltage sag common with traditional lead-acid batteries.
LiFePO4 output helps maintain steady voltage for kayak trolling motors and sensitive marine electronics. Use it for compatible 12V trolling motors, Garmin, Lowrance, Humminbird, and similar fish finder setups, lighting, pumps, and onboard accessories where total current draw stays within the battery rating.
Instead of cutting into a kayak dashboard for a physical gauge, monitor battery status from your smartphone. The Epoch Pro app gives compatible iOS and Android users visibility into state of charge, voltage, current, and battery status while on the water.
The enclosed LiFePO4 design contains no liquid acid, helping eliminate spill and fume concerns in portable power boxes or tight kayak compartments. Secure the battery properly, protect the terminals, and avoid submersion or standing water around the case.
A compact LiFePO4 drop-in replacement for compatible 12V auxiliary systems.
Clean 12V lithium power for kayak anglers, marine electronics, portable solar, and small auxiliary systems.
Recommended add-ons for a complete kayak, marine, or portable power installation.
Full technical details for the Epoch 12V 50Ah Essential Series LiFePO4 battery.
| General | |
|---|---|
| Brand | Epoch Batteries |
| Model / SKU | 1250A-ES |
| Series | Essential Series |
| Battery type | Bluetooth deep-cycle LiFePO4 battery |
| Primary applications | Kayak trolling motors, marine electronics, fish finders, small RV/van systems, portable solar, backup, and 12V auxiliary loads |
| Chemistry | LiFePO4 / Lithium iron phosphate |
| Cell configuration | 4S LiFePO4 |
| Bluetooth monitoring | Yes — Epoch Pro app for compatible iOS and Android devices |
| Internal heating | No — this model is not self-heated |
| Cycle life | 4,000+ cycles |
| Warranty | 11-year manufacturer warranty |
| Voltage and capacity | |
| Nominal voltage | 12.8V |
| Nominal capacity | 50Ah |
| Stored energy | 0.64kWh / 640Wh |
| Operating voltage range | 10.0V – 14.6V |
| Maximum charge voltage | 14.6V |
| Current ratings | |
| Max continuous discharge | 50A |
| Max continuous charge | 50A |
| Recommended charge current | 25A typical / 50% capacity |
| Peak discharge | 170A @ 3 seconds |
| Deep-cycle load warning | Do not design continuous loads above the 50A per-battery continuous limit |
| Series and parallel configuration | |
| Series connections | Max 4 batteries in series, up to 48V nominal systems |
| Parallel connections | Max 4 batteries in parallel |
| Maximum configuration | 4S4P using matched batteries and proper system protection |
| Maximum parallel capacity | Up to 200Ah / 2.56kWh with four matched batteries in parallel |
| Dimensions and weight | |
| Length | 7.7 in |
| Width | 6.5 in |
| Height | 6.9 in |
| Overall dimensions | 7.7 in L × 6.5 in W × 6.9 in H |
| Weight | 14.3 lb / 6.5 kg |
| Form factor | Compact Essential case |
| Mechanical and environmental | |
| Enclosure protection | IP54 weather resistant |
| Weather resistance | Dust protected and splash resistant; not intended for submersion |
| Terminal type | Bolt terminals — verify supplied terminal torque and hardware before installation |
| Charge temperature range | 0°C to 55°C / 32°F to 131°F |
| Discharge temperature range | -20°C to 60°C / -4°F to 140°F |
| Recommended storage temperature | 0°C to 35°C / 32°F to 95°F |
| Self-heating | No |
| Recommended charging settings | |
| Charger type | 12V LiFePO4-compatible charger, converter, inverter charger, solar controller, or DC-to-DC charger |
| Maximum continuous charge | 50A |
| Bulk / absorption voltage | 14.2V – 14.6V |
| Float voltage | 13.4V – 13.8V; float disabled preferred where supported |
| Re-bulk voltage | 13.2V if programmable |
| Equalization | Disabled |
| Temperature compensation | 0mV/°C / none |
| BMS high-voltage cutoff | 14.6V |
| SOC recalibration voltage | 14.6V |
Splash resistant protection for daily marine and outdoor use.
The IP54-rated enclosure is dust protected and splash resistant, making this battery suitable for everyday kayak, marine, RV, camping, and outdoor power use. It should not be submerged, pressure washed, or installed where standing water can collect around the battery.
More usable energy, less maintenance, and easier handling.
LiFePO4 technology provides stable voltage output, long cycle life, fast charging capability, and maintenance-free operation. For kayak anglers and small boat owners, the biggest everyday benefits are simple: less weight to carry, less space taken up in the hull, no liquid acid, and better visibility through Bluetooth monitoring.
Verify your kayak, boat, charger, and wiring before installation.
Always confirm compartment dimensions, battery box fitment, hold-down method, cable clearance, terminal protection, fuse sizing, charger compatibility, and total system current draw before installation. Use a lithium-compatible charger programmed within Epoch’s recommended charging parameters. For series or parallel battery banks, use matched batteries of the same model, age, capacity, and state of charge, and follow Epoch’s installation guidelines.
Frequently asked questions
Common questions about trolling motors, fish finders, Bluetooth monitoring, charging, and installation.
Yes, for many compact 12V kayak trolling motor setups. This 12V 50Ah lithium battery provides 640Wh of usable energy and supports 50A continuous discharge, making it a strong match for many 30 lb and 45 lb thrust kayak motors when the motor, wiring, fuse, and controller are within the battery rating. Runtime depends on boat weight, current, wind, speed setting, and how often the motor is run at full throttle.
Yes. LiFePO4 batteries provide stable voltage output that is well suited for sensitive marine electronics. This makes the battery a clean power source for fish finders, sonar, GPS units, chartplotters, lighting, pumps, and other 12V accessories where the total current draw stays within the battery’s ratings.
This battery includes built-in Bluetooth monitoring. Open the Epoch Pro app on a compatible iOS or Android device to view battery status such as state of charge, voltage, current, cycle information, and battery alerts without installing a separate dashboard monitor.
The LiFePO4 design contains no liquid acid, which eliminates acid spill concerns common with flooded lead-acid batteries. For kayak hulls and compact battery boxes, secure the battery firmly, protect the terminals, avoid submersion, maintain cable clearance, and confirm final mounting orientation with Epoch’s installation guidance before installing it anywhere other than upright.
This model is rated IP54, meaning it is dust protected and splash resistant for everyday marine, mobile, and outdoor use. It should not be submerged, pressure washed, or installed where standing water can collect around the battery.
Use a 12V LiFePO4-compatible charger, converter, solar charge controller, inverter charger, or DC-to-DC charger. Recommended charging settings include 14.2V to 14.6V bulk/absorption, 13.4V to 13.8V float, equalization disabled, and temperature compensation disabled. Avoid lead-acid desulfation or equalization modes.
Yes. This model supports up to 4 batteries in series and up to 4 batteries in parallel when using matched batteries of the same model, age, capacity, and state of charge. Always use properly sized cables, fuses, bus bars, and lithium-compatible charging equipment.
No. This is a dedicated deep-cycle LiFePO4 battery, not a cranking battery. It is designed for sustained auxiliary loads such as trolling motors, marine electronics, lights, pumps, RV accessories, portable solar, and backup power. Use a cranking-rated battery for engine starting.