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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Visual Check







Visual Check

- Before performing extensive measurements, inspect visually.

External battery condition;

Battery connections;

Secure battery seating.


Risk of explosion, inadequate crash safety, risk of corrosion, shortened service life.

A loose battery retaining bracket can damage the battery housing and allow battery acid to leak.

A battery that is mounted incorrectly can sustain vibration damage resulting in damage to the battery plates.

Tighten retaining bracket bolt.

Risk of malfunction in the electrical system or wiring burn.

The wiring connection contact is not guaranteed if the battery terminals are damaged or the battery terminal clamps are loose. Check the condition of the battery terminals; battery terminal clamp and auxiliary clamp tightening specification.