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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...
Electrical System, General Information - Edition 07.2010
Test requirements
♦ When charging a battery, battery temperature must be at least
≥ +10 °C.
♦ The charger must be capable of outputting a charge current of
at least 30 A, as for example with VAS 5095A, VAS 5900, VAS
5903
♦ The battery's current draw must be measured with a current
pick-up clamp, e.g. VAS 5051B/7, when charging with battery
charger -VAS 5095A- . Battery charger -VAS 5900- and bat‐
tery charger -VAS 5903- display the current draw on the unit.
– Connect battery to battery charger and start charging se‐
quence.
– Measure charging current of battery after 5 minutes.
Test result:
If the current draw A is higher than 10 % of the nominal capacity
(e.g. > 6.1 A for a 61 Ah battery), fully charge battery and test
again.
Note
For Eos with two 6V absorbent glass mat batteries, the charge
current must only be 5 % higher than the nominal capacity of the
battery. Example for Eos: the 50 Ah battery must have a charge
current higher than 2.5 A after 5 minutes of starting the charging
sequence.
– Fully charge the battery when the charge current is higher than
10 % of the nominal capacity (observe exception for Eos in
above note).
– Perform battery test after allowing battery to rest for two hours
⇒ page 9 .
If the charge current, in amperes, lies below 10 % of the nominal
capacity after 5 minutes of starting the charging sequence (5 %
for the 2 x 6 volt batteries in Eos) (example for 50 Ah battery <
5A), renew battery. For Guarantee and ex-gratia cases: complete
battery test sheet and keep it with the battery.
2.8
Checking no-load voltage of battery on
stock and stored vehicles
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Note
♦ The no-load voltage test may only be carried out to assess the
condition of the battery on stock and stored vehicles within the
framework of prescribed maintenance.
♦ The no-load test serves to determine whether a battery on a
stock or stored vehicle requires recharging ⇒ Maintenance
tables „Service for stock and stored vehicles“ .
Special tools and workshop equipment required
2. Checking battery
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