Current Draw Test

Make sure the correct charging mode is set on the battery charger so the current draw test is not inaccurate.

• Battery ChargerVAS5095A, refer to BATTERY, CHARGING WITH Battery Charger VAS5059A .
• Battery ChargerVAS5900, refer to Battery Charger VAS5900 .
• Battery ChargerVAS5903, refer to Battery Charger VAS5903 .

In order to receive an indication as quickly as possible of the battery condition of discharged Batteries -A-, a conclusion can be made during the charging process using the Battery -A- current draw as to whether the Battery -A- should be replaced or charged completely.

The current draw test should always be performed if the test using the Battery Tester with PrinterVAS5097A had the following results: 

1. Starting power sufficient
2. Starting power insufficient
3. Starting power very insufficient
4. cannot be tested - charge the Battery -A- and perform the test again
5. Battery Tester with PrinterVAS5097A does not turn on (no LED, no printout)

Depending on the test results Battery Tester with PrinterVAS5097A (refer to TEST RESULT EVALUATION ), additional test steps or work for a clear evaluation of the battery charge must be made.

By checking a current draw capacity on a Battery -A- during the charging procedure, it can be determined in a short time whether a partially discharged or severely discharged Battery -A- can become operable again by further charging, refer to SEVERELY DISCHARGED BATTERIES .

Test Prerequisites 

• When charging a battery, the temperature of the battery must be at least 10 °C.
• The charger must be able to deliver at least 30 A charge current, such as on the Battery ChargerVAS5095A/Battery ChargerVAS5900/Battery ChargerVAS5903.
• When charging with the Battery ChargerVAS5095A, the Battery -A- current draw must be measured using a current probe (Test Instrument Set - Current Clamp - 100AVAS6356/4A).
• The Battery ChargerVAS5900 and the Battery ChargerVAS5903 indicate the current draw. The Battery ChargerVAS5900 automatically performs the menu- guided current draw test.

Procedure 

-- Connect the Battery -A- to the Battery Charger and start the charging process.

-- Measure the Battery -A- charge current after five minutes.

Test result 

The charge current must be above 10 % of the nominal capacity 5 minutes after charging begins.

Example: 

With a 60 Ah battery, the charge current must be greater than 6 A 5 minutes after charging begins.

-- Charge the Battery -A- completely when the charge current is greater than 10% of the nominal capacity.

-- Let the Battery -A- sit for two hours and then perform the battery load test, refer to BATTERY LOAD TEST .

If the charge current is less than 10% of the nominal capacity (less than 6 A for a 60 Ah battery) five minutes after starting the charging, then replace the Battery -A-, refer to BATTERY .

-- In warranty and Goodwill cases, fill out the battery test sheet and keep it with the Battery -A-.