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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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No-Load Test

1. Connect the Digital Multimeter leads across the battery terminals.
2. Read the voltage (base voltage) if battery voltage is less than 12.5 volts, recharge battery before test.
3. Start the engine.
4. Run the engine to 1500 rpm with no electrical load.
5. Read the voltage. If the voltage increase is less than 0.5 volts over the base voltage, carry out the following Load Test. If there is no voltage increase, carry out the on-vehicle charging system test.