How to Charge a BMW Battery the Right Way

In this guide, you will find instructions on how to charge a dead BMW battery.  The best method to charge a BMW battery is to use a 12-volt trickle charger and to make sure to use the jump start terminals under the hood.

DIY Cost: $20-$55
Est. Time: 4-24 hours
Difficulty: Very Easy

Ideally, the battery should be charged off the car, but if the battery has no damaged cells, it can be charged in the vehicle. 

What you will need


The proper way to charge a BMW battery is by using the jump start terminals under the hood.

  1. Open the driver's door using the emergency key found inside the key fob. 
  2. Pull the hood release twice and open the hood. open hood to charge bmw battery


  3. Locate the positive terminal under the engine jump start terminalbmw battery charging post


  4. Connect the red clamp from your charger to this post. how to charge bmw battery
  5. Locate the negative terminal under the hood. BMW has a designated copper post. If you can't find the negative (ground) post, connect the black clamp to one of the strut tower bolts. charging bmw battery using slow charger such as ctek
  6. Determine the battery type. The battery type is printed on top of the battery. The battery type will be Regular/Lead Acid/Flooded or AGM battery.  If the battery has a black case, it most likely is an AGM battery. If the battery has a white case, it is a regular or flooded battery trickle charger instructions
  7. Plug your charger into a wall outlet or extension to use bmw battery charger plug it into 120 volt outlet
  8. Allow the battery to get charged or stay fully charged. Do not keep the key in the ignition while the battery is charging. If you are charging a fully discharged battery, it can take up to 24 hours to charge your BMW battery charging ponits

BMW batteries are used even when the car is turned off.

Typically it takes anywhere from 15 to 30 minutes for all BMW systems to go to "sleep." Even when the car has entered a "sleep mode," 0.1-0.5A is still drawn from the battery.


  • Car won't start
  • Battery Warning Light on
  • Airbag light on
  • The battery dies when parked for an extended time.
  • Instrument Cluster Warning Lights on

Frequently Asked Questions

Can I use a slow charger to jump-start a BMW?

Yes, you can, but you need to allow the battery to charge for several hours. A slow charger only puts out about 2 to 12 amps, which is not a lot much current. If your BMW battery is fully discharged, it can take about 10 hours or more for the battery to get charged.

Where is the battery charging location on a BMW?

The charging points on a BMW are (also known as the jump-starting terminals) located in the engine bay. The positive terminal is covered with a red plastic cover.

bmw charging points location also used for jump starting dead battery


Visitor, May 6, 2019
My 330d is completely flat I have tried to charge it with a standard charger. After seconds it cut out and beeping noise started. Is it essential that you use a trickle charger . Help!
Visitor, May 6, 2019
Is it necessary to use a smart charger to charge the battery on my 2014 330id Mseries
Trickle charger refers to small current. It could be 1A. Any charger up to 15A would be fine in my opinion.
How to Charge a BMW Battery the Right Way Ideally, the battery should be charged off the car, but if the battery has no damaged cells, it can be charged in the vehicle.