Precision voltage for precision systems. The 51.2V nominal voltage aligns with a true 16-cell LiFePO4 series configuration where each cell operates at its natural 3.2V equilibrium point. Modern hybrid inverters with sophisticated MPPT algorithms extract measurably more usable energy from a 51.2V battery than from a nominally similar 48V pack. The difference is subtle per cycle but substantial across a five-year operational lifespan.

This technical advantage matters more than most buyers initially realise. When cells operate at their natural resting voltage, internal resistance drops. Charge acceptance increases. Waste heat decreases. The cumulative effect across 5,000-plus cycles is a battery that delivers a greater proportion of its rated capacity to the connected loads. Energy that would otherwise dissipate as heat instead powers appliances.

LiFePO4 prismatic cells selected for exceptional voltage consistency form the core of this pack. Cell-to-cell voltage variation is held within the tightest tolerances during both charge and discharge phases. At 55 kg and 360 x 280 x 260 mm, the battery fits standard enclosures designed for 48V systems. Upgrading from 48V to 51.2V requires no physical infrastructure changes. Mounting provisions support wall and floor installation.

The smart BMS enforces five protection layers: over-voltage, under-voltage, overcharge, deep discharge, and temperature regulation. Bluetooth, RS485, CAN, and UART communication interfaces enable remote monitoring and hybrid inverter integration. Charging at 20A finishes in about 5 hours. IP69 environmental certification handles all installation conditions.

The 60-month warranty with replacement and repair coverage provides the longest assurance in the Uttam Electric catalogue. For solar professionals who understand that voltage precision drives system-level efficiency, the 51.2V 100Ah is the specification that pays for itself. Made in India with the precision that modern solar infrastructure demands.

TECHNICAL SPECIFICATIONS