bq24210 800mA Li-Ion Battery Solar Charger Texas Instruments bq24210 800mA Li-Ion Battery Solar Charger is a highly integrated device targeted at space-limited portable applications. The high input voltage range of the bq24210 with input overvoltage protection supports low-cost unregulated adapters. The input voltage regulation loop with programmable input voltage regulation threshold makes it suitable for charging from alternative power sources, such as a solar panel or inductive charging pad.