Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The K2 Energy GT12V100-LTSB-A20 is a 12.8V 100Ah LiFePO4 deep-cycle battery rated at 1280Wh, aimed at solar storage, RVs, marine and off-grid setups. It stands out for a built-in BMS with low-temperature charging cutoff, an IP67-rated ABS case, Bluetooth status monitoring and roughly half the weight of an equivalent lead-acid battery. Against flooded and AGM rivals it offers far more usable capacity, longer cycle life and no maintenance, though it costs more up front and needs a lithium-compatible charger. It suits owners who want sealed, drop-in deep-cycle power with app visibility rather than the cheapest possible bank.
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Lowest price we've seen: $399.99 on Nov 14 at Campingworld; highest $525.00 on Oct 31. Tracked across 2 stores since Oct 31.
Owner feedback on this class of K2 LiFePO4 battery is generally positive, with buyers citing steady voltage under load, easy drop-in replacement of lead-acid and useful Bluetooth monitoring. Complaints center on charger compatibility and reduced charging in cold conditions.
This 12V, 100Ah deep-cycle battery uses lithium iron phosphate (LiFePO4) chemistry. It has a 12.8V nominal voltage and delivers 1280Wh of output. It is maintenance-free and about 50% lighter than traditional SLA batteries.
An internal Battery Management System (BMS) protects against overcharge, over-discharge, short circuits and thermal overload. The battery has built-in low-temperature charging. A Bluetooth app lets you monitor its status wirelessly.
The rugged ABS plastic case has an IP67 rating for dust and water protection. The battery is used for solar storage, RVs, marine systems, electric vehicles, telecom backup and off-grid energy setups.
