Buying
What Is LiFePO4? Lithium Iron Phosphate Boat Batteries
LiFePO4 is lithium iron phosphate, a lithium chemistry chosen for marine use because it is markedly more thermally stable than the cobalt chemistries in laptops and phones.
What Is LiFePO4? Lithium Iron Phosphate Boat Batteries: explanation
It gives up some energy density in exchange for that stability and for a long cycle life, which on a boat is the right trade.
Every battery on this site is LiFePO4. If a marine battery does not say which chemistry it uses, that is itself informative.
More on buying
Which marine lithium battery brand is best?There is no single winner, and any publication that names one is telling you more about itself than about batteries.Can you charge a lithium battery below freezing?Do not charge below the exact battery’s permitted temperature. Some products require charging to stop above 0°C; a suitable cut-off prevents charging, while approved heating can warm the cells first.What does the BMS actually do?It protects the cells: balancing them, and disconnecting the battery if voltage, current or temperature goes outside safe limits.Can I add more batteries to an existing lithium bank later?Only where the battery manufacturer permits the proposed combination. Confirm model, age, voltage, parallel limits and charging requirements, then reassess the wiring and protection.