Severely Discharged Batteries: Notes

WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, 2013 Volkswagen Beetle, and 2012 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of injury. Follow all warning messages and safety precautions, refer to WARNINGS AND SAFETY PRECAUTIONS .

A Battery -A- is designated as "severely discharged" if the resting voltage is less than 11.6 V.

WARNING:

Do not check or charge a Battery -A- when the visual indicator has >>no color or is bright yellow<<. Jump starting must not be used!

There is a risk of explosion during testing, charging or jump starting.

These Batteries -A- must be replaced.

CAUTION:

Severely discharged Batteries -A- freeze earlier.
Batteries -A- that have frozen must no longer be used.

NOTE:

Batteries -A- that have not been used for a long time will discharge by themselves.

In severely discharged Batteries -A-, the electrolyte consists almost completely of water, because the acid portion has been greatly reduced.

Severely discharged Batteries -A- become sulfated, meaning all of the plate surfaces of the Batteries -A- harden.

The sulfation process may be reversed if a severely discharged Battery -A- is recharged immediately.

If the Battery -A- is not recharged, the plates will continue to harden, and the ability to accept a charge will decrease. This results in reduction of battery performance.

Severely discharged Batteries -A- in vehicles must be replaced prior to delivery. Pre-existing damage cannot be ruled out.