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The WattCycle 12V 100Ah is a LiFePO4 battery built for dual duty: cranking outboards and running trolling motors, electronics or off-grid loads. It delivers 1200 cold cranking amps, which is strong for a lithium marine battery, and adds Bluetooth monitoring through the WattCycle app plus automatic self-heating below freezing. The force-start button gives a manual backup if the battery will not wake on its own. It suits boaters and RV owners who want one battery for starting and house power, and who camp or fish in cold weather. Against flooded and AGM marine batteries it is far lighter and lasts many more cycles, but it costs more up front and needs a lithium-compatible charger.
In stockShips from Hong Kong SAR China · duties may applyReturn policy
Rated 4.9 out of 5 across 1,675 ratings, owners mostly report strong cranking, useful Bluetooth monitoring and reliable cold-weather starting. Complaints are few and center on charger compatibility and the learning curve of the app.
This is a 12V 100Ah lithium iron phosphate (LiFePO4) battery for both marine and automotive use. It can crank an engine with 1200 CCA and also power loads such as trolling motors, fishing electronics, RVs and off-grid systems. It is built to fit standard 100Ah lead-acid battery enclosures.
A built-in 200A Battery Management System (BMS) protects against overcharging, over-discharging and short circuits. Integrated Bluetooth works with the WattCycle app to show battery health, charge status and usage. The battery has an IP67 rating, so it is water-resistant.
In cold weather, the battery heats itself when the temperature drops below 0°C/32°F. It keeps heating until it reaches 5°C/41°F. A force start button gives an emergency power-up if the battery fails to self-start.
