bq25303J Standalone 3.0A Battery Charger Texas Instruments bq25303J Standalone 3.0A Battery Charger is a highly-integrated switch-mode battery charger for 1-cell Li-ion and Li-polymer batteries. The bq25303J supports 4.1V to 17V input voltage and 3A fast charge current. The integrated current sensing topology of the device enables high charge efficiency and low BOM cost. The best-in-class 200nA low quiescent current of the device conserves battery energy and maximizes the shelf time for portable devices.