48V 200Ah 300Ah LiFePO4 Battery for Electric Vehicles, Golf Carts & Marine Applications

In practice, what you're looking at is a drop-in replacement for a bank of lead-acid batteries that'll run your cart or boat all day without the votage sag—users coming from AGM usually report a solid 30% longer runtime before they hit cut-off at 40.0V, and the BMS handles over-discharge automatically so you don't fry cells if someone leaves the lights on.

The 200Ah version pushes 10240Wh and can take a 100A charge rate, but the 300Ah tops out at 50A on teh input side despite its 15360Wh capacity—we've had guys try to fast-charge the bigger unit and wonder why it throttles, it's just BMS protecting the larger cell stack from thermal runaway during bulk charging.

Cycle life is quoted at over 2000 cycles at 80% depth of discharge, which in real-world use means five to seven years if you're cycling daily—and yeah, that's better than the 500-800 cycles you'd get from a quailty AGM at similar DoD, though the upfront cost is steeper for this LiFePO4 chemistry.

For marine applicaion, you'll want the 200Ah if you're swapping into a 48V golf cart or small EV where the 1030mm length fits, but the 300Ah is pretty much a cube at 740x506x408mm—it's heavier too, about 130kg give or take, so plan your mounting brackets accordingly.

3.65V per cell is where we charge to, and the CANbus communication lets you most modern BMS systems for real-time SoC tracking—we usually have stock on both capacities, but the 300Ah can run 8-10 weeks lead time if demand spikes (check with us before ordering large quantities).

Anyway, one thing buyers don't always ask about is the M8 versus M10 terminal size—the 300Ah uses M8*0.75 bolts, so if your existing cables have ring terminals drilled for M10, you'll need adapters or new lugs, which is a minor hassle but easy to sort before installation.