WARNING | It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle! |
| Danger of explosion when checking and charging or slave/jump starting. |
| These batteries must be renewed. |
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| Ensure that the correct charging mode is set on the charger so that the current draw test is not falsified. |
| To quickly ascertain the state of discharged batteries, the battery current draw test whilst charging helps to determine whether the battery must be replaced or fully recharged. |
Note | For battery tester with printer -VAS 6161-, the current draw test must always be performed when the test result „Perform current draw test“ appears on the display. |
| The current draw test should always be carried out if |
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| The result of the test with battery tester with printer -VAS 5097A- gave the following results: |
| 1 - | Starting capability sufficient |
| 2 - | Starting capability poor |
| 3 - | Starting capability very poor |
| 4 - | Cannot be tested – charge battery and repeat test. |
| - | and when the tester will not switch on (no LED, no printout) |
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| The result of the test with battery tester with printer -VAS 6161- gave the following result: |
| 1 - | Perform current draw test |
| Depending on the test result → Chapter with battery tester with printer -VAS 5097A-, further procedures or tests may be required before making a final decision on the condition of the battery. |
| Performing a current draw test whilst charging a battery will quickly establish whether a partly or fully discharged battery → Chapter can be recharged to return it to a serviceable condition. |
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| When charging the battery, its temperature must be at least ≥ +10 °C. |
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| 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 |
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| 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 battery charger -VAS 5903- display the current draw on the unit. Battery charger -VAS 5900- performs the current draw test automatically with menu guidance. |
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| Connect battery to battery charger and start charging sequence. |
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| Measure charge current of battery after 5 minutes. |
| 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. |
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| Fully charge the battery when the charge current is higher than 10 % of the nominal capacity (observe exception for Eos in above note). |
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| Perform battery test after allowing battery to rest for two hours → Chapter. |
| 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 warranty and goodwill cases, please complete the battery test sheet. |
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