The 12V 100Ah LiFePO4 (Lithium Iron Phosphate) battery is an excellent choice for marine applications. It offers high energy density, long cycle life, and superior safety. LiFePO4 batteries are replacing traditional lead-acid batteries on yachts, fishing boats, and sailboats, becoming the core of onboard energy systems.
A 12V 100Ah LiFePO4 battery weighs about 10-13kg, much lighter than a comparable lead-acid battery which can exceed 30 kg. The reduced weight improves fuel efficiency and boat speed, which is important for small boats and sailboats.
LiFePO4 batteries can provide over 4000 charge-discharge cycles, while lead-acid batteries typically last 300–500 cycles. This leads to lower long-term costs and less maintenance.
LiFePO4 chemistry is thermally stable and non-flammable. It will not explode even under overcharge, short-circuit, or mechanical stress, which is critical for marine environments.
LiFePO4 batteries support continuous discharge up to 1C and charge up to 2C. They work well with solar panels or shore power to provide reliable power for motors, navigation systems, and electronics.
Used as the main battery in electric boats or sailboats. Multiple units can be connected in series for higher voltage systems (e.g., 4 batteries for 48V).
Used to power lighting, refrigerators, sound systems, navigation instruments, and pumps. Provides stable voltage without dimming or restarting issues.
LiFePO4 batteries have high charge/discharge efficiency (up to 98%) and are ideal for solar energy storage, increasing off-grid autonomy.
| Feature | LiFePO4 Battery | Lead-Acid Battery |
|---|---|---|
| Energy Density | High (≈120 Wh/kg) | Low (≈30 Wh/kg) |
| Cycle Life | 4000+ cycles | 300–500 cycles |
| Weight | 10-13 kg | 30–32 kg |
| Maintenance | Maintenance-free | Requires fluid checks |
| Safety | Excellent thermal stability | May leak or emit gases |
| Cost | Higher initial, lower lifetime cost | Lower initial, higher long-term cost |
The battery contains four 3.2V LiFePO4 cells in series for a nominal voltage of 12.8V. The built-in BMS provides:
Some marine models include Bluetooth or CAN monitoring for voltage, current, temperature, and cycle count.
Small leisure boat configuration:
Provides about 2.56 kWh usable energy, enough for 10+ hours of essential systems or 1–2 days off-grid operation.
LiFePO4 batteries last 10+ years, reducing replacement costs. They contain no nickel or cobalt, are recyclable, and help reduce environmental impact.
The 12V 100Ah LiFePO4 battery is lightweight, safe, long-lasting, and efficient. It is ideal for marine applications from small fishing boats to luxury yachts. With intelligent energy management and eco-friendly materials, it is gradually replacing traditional lead-acid batteries.