Single chip battery management solution — bq77910 The bq77910 precision protector is an integrated battery-protection and cell-balancing solution for 4- to 10-cell Li-ion battery packs. This protection IC monitors individual cell voltages and can directly drive n-channel power MOSFETs to interrupt current flow during fault conditions. Fault detection and recovery criteria are fully programmable in non-volatile memory to suit all types of Li-ion systems.