Safe charging of Li-ion batteries with Bulk Metal Foil® Resistors (Demo Video) - VPG
Li-ion battery chargers are complex and challenging circuits. They require accurate current and voltage settings and monitoring, as well as a constant current and constant voltage to avoid either undercharging (which results in reduced capacity) or overcharging (which can result in catastrophic failure). Bulk Metal® Foil resistors achieve the necessary accuracy in the charge-control circuitry for monitoring/supplying current and voltage and thus play a key role in enabling lithium-ion battery safety.