Solar Battery

Solar batteries (typically lithium-ion, LiFePO4 or advanced lead-acid) store energy generated by the panels and enable usage during periods without sunlight. The Battery Management System (BMS) monitors individual cell voltages, performs balancing, provides overcharge/over-discharge protection, controls temperature, and communicates with the inverter or charge controller. Common failures include cell imbalance, burnt protection MOSFETs, defective voltage and current measurement circuits, faulty BMS control chips, and capacity loss due to deep cycles or high temperatures. Expert repair involves capacity and internal resistance testing of each cell with specialized equipment, revival of weak cells through controlled charging, repair or replacement of the BMS board, sensor calibration, re-balancing of the battery pack, and final charge/discharge cycle testing to ensure safety and adequate lifespan. Strict safety protocols must be observed when working with lithium batteries.