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

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

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Visual Inspection




Visual Inspection


WARNING!
When charging, measuring the voltage or load testing a battery, the cell caps must always be screwed in tightly.



Before performing tests such as no-load voltage, specific gravity or the battery load tests, a visual check should be made of the battery.

The purpose of this check is to determine
- If the case of the battery has been damaged. Damage to the case can cause acid to leak.
- If the terminals have been damaged. Damaged terminals make it impossible to assure a good contact at the terminal. This can lead to a cable fire and damage to the electrical system.