ampere time 12v 300ah lithium lifepo4 battery, built-in 200a bms, max 2560w power output, easy installation, 4000+ deep cycles, fcc&ul certificates, 10-year lifetime, perfect for off-grid, rv, solar... ampere time <b>about ampere time powerful lithium iron phosphate battery</b><br><br> this high-quality powerful lithium battery is an excellent replacement or upgrade for<br> any application currently using a deep cycle gel, agm or flooded lead acid battery. <br><br> this battery is suitable for a wide range of uses, both indoors and outdoors. <br> ampere time 12v 300ah lithium battery really shines when going camping off the grid. <br><br> <b>specifications</b><br><br> heavy duty case<br> maintenance free<br> lifting handle fitted to ensure secure hold when moving<br> chemistry: lithium iron phosphate (lifepo4) <br> nominal voltage:12.8v<br> rated capacity (0.2c): 300 ah / 3840wh<br> cycle life: > 4000 cycles at 100% depth of discharge (dod), up to 5000 cycles at 80% dod<br> rated voltage: 12.8v<br> charge voltage: 14.4 - 14.6v (max. per cell: 3.65v) <br> cut-off voltage: 10v (discharge voltage per cell: 2.50v) <br> depth of discharge (dod): 100%<br> standard charge current: 60a<br> charging time: approximately 5 hours<br> max continuous charge current: 200a<br> max continuous discharge current: 200a<br> peak discharge current: 400a (for 5 seconds) <br> operating temperatures: charge 0°c~50°c, discharge -20°c~60°c, storage -10°c~50°c<br> battery dimensions(in): 20.5*9.37*8.54<br> weight: 62.83lbs (28.5kg) <br> battery terminals: m8<br> <b>charging tips: </b><br><br> use lithium battery charger to maximize the capacity; <br>select b04 mode (which is 4 pcs lifepo4 battery cells in series connection) when charging with solar inverter. <br> <b>connection tips: </b><br><br> (details will be listed in product manual) <br>our battery can be connected in parallel and series for larger capacity. <br> connect in series: up to 4 identical batteries for up to 48v. <br> connect in parallel: between identical batteries - voltage difference between the batteries must be less than 0.5v. <br>it can support fast charging and solar panel charging.