SLUSA75B July 2010 – January 2020 BQ24650
On power-up, if the battery voltage is below the VLOWV threshold, the BQ24650 applies the precharge current to the battery. This feature is intended to revive deeply discharged cells. If the VLOWV threshold is not reached within 30 minutes of initiating precharge, the charger turns off and a FAULT is indicated on the status pins.
The precharge current is determined as 1/10 of the fast charge current according to Equation 4: