Battery cell chargers are devices that are used to charge various types of batteries such as lithium ion, nickel metal hydride, lead acid, and others. They can run on AC power, solar panels, or other energy sources and typically have a range of features such as current and voltage monitoring, overload and short circuit protection, and automatic shutdown when the battery is fully charged.
Chargers may have different features and specifications depending on the type of battery they are charging. For example, lithium-ion battery chargers must have current and voltage monitoring to prevent overcharging and damaging the battery. Chargers for NiMH batteries must have a charge memory reset function.