MaxPower 1.28kWh Lithium-ion Battery 12.8V (MP 1200-Ultra)

Note: Cycle life is quoted as 6000 cycles at 80% depth of discharge, 20-55°C and 0.5C, measured to 60% end-of-life. That last figure matters: most brands in this catalogue quote to 70% or 80% of original capacity, and a cell measured all the way down to 60% will always show a bigger cycle number. Treat it as optimistic against a Dyness or Knox figure. Bulk charge 14 V, float 13.8 V, cut-off 11.6 V - a tighter window than the MP 1200-Pro's 10.8 V floor, so it reserves more charge. Short-circuit current is quoted at roughly 1000 A. Stacks 4 in series and 4 in parallel, where the Pro version publishes no scalability at all, and it adds an RS485 port the Pro lacks. Working temperature is a single -20°C to 60°C range for both charge and discharge. 10.35 kg. The Ultra is the better of the two 12 V models on every published figure. MaxPower publish a compatibility list covering Solis, Growatt, Sofar, SAJ, ATESS, Must, GoodWe, SMA, Deye, Megarevo, SRNE, Victron, LuxPower and Voltronic.