Checking The Charge State Of The Battery
WARNING: This page is about a different variant/trim than selected.
Information
The instructions for working on the vehicle battery and the safety specifications in the document "General information on the vehicle battery" must be observed.
- 2X00IN General information on the vehicle battery
- Check the battery charge state according to the operating instructions for the relevant rapid-start battery charger.
Evaluating the test results and subsequent procedure
| Open-circuit voltage in volts | Charge state in % | Evaluation and procedure |
|---|---|---|
| 12.7 - 12.5 | 100 - 80 | Charge state OK |
| 12.5 - 12.2 | 80 - 50 | Charge state reduced, recharge battery and observe an inactive period of two hours after charging. |
| 12.2 - 11.6 | 50 - 10 | Battery flat; recharge battery and observe an inactive period of two hours after charging. |
| below 11.6 | below 10 | Battery totally discharged; replace battery. |
NOTIFICATION
Using charging cables/jump leads directly on the vehicle battery.
- Risk of damage to battery sensor
- → Always connect charging cables/jump leads to the external power supply for jump-lead starting.
Information
- When working or carrying out tests on the vehicle or when the vehicle is in the workshop, a battery charger with a current rating of at least 90 A must be connected.
- As soon as the vehicle is unlocked, e.g. the vehicle is in the workshop or salesroom, it must be trickle-charged using a battery charger.
Information
When using an original standard d vehicle electrical system battery, a charge voltage of 14.4 V or even 14.8 V (setting on the battery charger) can be applied.
Workshop equipment Battery chargers.
- Open protective cover -1-
on the positive terminal for jump-lead starting.
Protective cover on positive terminal
- External power connection
External power connection
- 2.1 First, connect the positive cable from the charger to the positive terminal -1- .
- 2.2 Connect the negative cable from the charger to the ground point for jump-lead starting -2- .
- Read operating instructions for the charger.
- Switch off all loads.
- Switch on the charger.