Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Load Test




1. Connect voltmeter (1) and battery load tester (2) across terminals of battery (3).
2. Apply proper face charge. Refer to L.T. (Load Test) described on battery caution label. For example, if it is 190, apply 190 ampere load.
3. Remove the load and wait 15 seconds to let battery recover.
4. Apply same load as in Step 2). Read voltage after 15 seconds.
5. Remove the load.
- The voltage does not drop below the minimum as listed in table. - Battery is good.
- The voltage does drop below the minimum as listed in table. - Replace the battery.

Battery Load Test Voltage:






NOTE:
Temperature of battery will affect minimum voltage required to pass load test.
See the figure and estimate the temperature battery has been exposed to for the last several hours.