HH Series vertical LiFePO4 battery, 10.2–32.2 kWh

Six capacity steps, two case sizes

The HH exists to remove the awkward gap between 10 and 30 kWh, where a single module is too small and a stack is more assembly than the site needs. Six models cover it, and two case sizes hold them: the 200–412 Ah units in a 248–300 mm deep cabinet, and the 560–628 Ah units in a wider, lower 880 mm case.

That wider case is worth noting at the quotation stage. On paper both are "vertical", but a 880 mm deep cabinet will not fit where a 248 mm one does, and the difference only surfaces on installation day.

Cells and cycle life

All six models use Grade A prismatic LiFePO4 cells rated at 8,000 cycles to 80 % state of health, with a 5-year warranty and a 10+ year design life at moderate cycling. The BMS balances at the top of the charge and logs the deepest discharge and highest cell temperature, which is what a warranty claim is actually assessed against.

When to parallel rather than upsize

Past 32 kWh, the question is whether to parallel two HH units or move to a cabinet. Parallel units share current through separate breakers, so a fault in one leaves the other running — an advantage in a backup application where partial capacity beats none.