Ships directly from the USA with an estimated time of 3-8 weeks!

Spec Sheet

MARINE GRADE! BigBattery’s 12V 3kWh LiFePO4 SEAL battery is our first marine grade lithium solution for your boats and marine applications.

The SEAL is a heavy-duty marine battery designed to handle even the toughest waters. The SEAL is equipped with a watertight double seal, both rubber and foam, and is constructed with 316 grade stainless steel, one of the most corrosion resistant stainless steels available, so whether you’re on the pond or in the ocean, the SEAL is prepared. Plus, the SEAL comes with an extendable LED voltmeter so you can install your display right there in your boat’s dashboard.

On top of all these features, the SEAL comes with everything you can expect from a BigBattery battery, including brand new LFP cells, a 300A Fuse, and our advanced BMS with Over/Under Voltage Protection, Over Current Protection, and a Thermal Management System that affords safe charging and discharging within a wide temperature range. When it comes to your marine applications, you need a battery you can rely on. Upgrade to the SEAL and get 3kWh of watertight, non-corrosive power!

Specs

SKU: FSEAL-12030-G1
Voltage: 12V
Chemistry: LiFePO4
Charging Voltage Range: 13.9 - 14.5
Max Charge Voltage: 14.7V
Operating Voltage Range: 9.80 - 14.6V
kWh Capacity: 3kWh
Ah Capacity: 228Ah
Cell Configuration: 4S
Max Continuous Discharge Current Amps: 175
Max Continuous Power Watts: 2240
Max Discharge Peak Current Amps: 350 (6 Seconds)
Max Charge Current Amps: 175
Charge Temp Range (°C): 0°C (32°F) / 55°C (131°F)
Discharge Temp Range (°C): -30°C (-22°F) / 55°C (131°F)
Optimal Discharge Temp Range: 15°C (59°F) / 35°C (95°F)
Storage Temp: -5°C (23°F) / 35°C (95°F) (Max 6 Months)
Weight: 50 (LBS)
Length Inches: 9.6
Width Inches: 7.6
Height Inches: 13.2
Safety Features: BMS (Battery Management System)
Over Voltage, Under Voltage, Over-Current
(Thermal Management System), Safety Fuse (300A)
Parallel: Up To (8) Parallel

Designed For 12V Applications:
✅ LEAD-ACID REPLACEMENT
✅ INTENSE HEAT AND COLD
✅ HUMID ENVIRONMENT
✅ OTHER MARINE USES
✅ OUTDOOR POWER
✅ FISHING BOATS
✅ HOUSEBOATS
✅ MOBILE POWER
✅ BOATS