The BMW Battery Charger is specifically matched to your BMW and includes premium features, such as an easy to read display, automatic 8-stage charging and several safeguards. This charger is a brilliant solution to optimizing battery performance, while maximizing service life. USA Charging batteries for BMW, BMW M vehicles and BMW motorbikes. Charging algorithm for 12 Volt AGM, lead-acid batteries and the new lithium ion batteries for BMW M.