Waist Bandage, HOW TO CHARGE YOUR BMW BATTERY CORRECTLY. About featured snippets•FeedbackPeople also askYou will see more English now.What does charge battery in BMW mean?Can I charge BMW battery directly?How do you start a dead BMW battery?Can I charge my BMW battery without disconnecting it?Feedback Welly Bandage Refills, How to Charge BMW Battery [Full Guide]. Oct 2, 2022 — For most BMW batteries (80-110Ah) charging an empty battery will take about 20 to 30 hours with a 4-6 ampere charger. To boost the battery .