Proper use and maintenance of storage batteries:
Check that the mounting bolts on the battery bracket are tightened. Loose installation can cause damage to the battery casing due to vibrations during driving. Also, do not place metal objects on the battery to prevent short circuits.
Regularly check that the terminals and connectors are securely connected. To prevent oxidation of the terminals, apply a protective agent such as petroleum jelly.
Do not use direct sparking (short circuit test) to check the battery's charge level, as this will damage the battery.
Regular lead-acid batteries require the addition of distilled water periodically. Dry-charged batteries should ideally be properly charged before use. As for maintenance-free batteries that can be fitted with water, they are not without maintenance; proper inspection and, if necessary, adding distilled water can help extend their lifespan.
The vent holes on the battery cover should be clear. During charging, a large number of air bubbles will form. If the vent holes are blocked, preventing the gas from escaping, the battery casing will crack when the pressure increases to a certain level.
A yellowish-white paste-like substance is often found around the battery terminals and caps. This is caused by sulfuric acid corroding the terminals, clamps, and mounting brackets. This substance has a high electrical resistance and should be removed promptly.
When using two batteries in series, it is best to ensure that the batteries have the same capacity. Otherwise, it will affect the lifespan of the batteries.