Diesel Data: Automotive Repair

Battery: Service Precautions

Precautions For Handling Battery

WARNING:
- Hydrogen gas is produced by battery. Never expose battery to open flame or electric spark as battery generating gas is flammable and explosive.
- Do not allow electrolyte to come in contact with eyes, skin, fabrics, or painted surfaces as electrolyte is a corrosive acid. Immediately and thoroughly flush any contacted area with water.
- Batteries should always be kept out of reach of children.


1. The battery is a very reliable component, but needs periodic attention.
- Keep the battery carrier clean.
- Prevent rust formation on the terminal posts.
- Uniformly keep electrolyte at upper level in all cells. (If provided with cells)
- When keeping the battery in the vehicle over a long period of time, follow the instructions given below.
- Start the engine weekly and run it until it reaches normal operating temperature with engine speed at 2000 to 3000 rpm. Make sure all electric switches are turned off before storing the vehicle.
- Recharge the battery once a month to prevent excessive discharging. This is especially important when ambient temperature is low.
While vehicles are stored, the battery discharges when it is not used. Battery electrolyte can freeze and battery case can crack at cold ambient conditions if the battery is not properly charged.

2. Keep the battery cable connections clean.
The cable connections, particularly at the positive (+) terminal post, tend to become corroded. Rust on the mating faces of conductors caused by corrosion hinders the flow of current.
Clean the terminals and fittings periodically to ensure good metal-to-metal contact, and grease the connections after each cleaning to protect them against rusting.

3. Always be aware of battery charge conditions. The simplest way to check conditions is through a hydrometer test. The hydrometer is an instrument for measuring the specific gravity (S.G.) of the battery electrolyte. The S.G. of the electrolyte indicates the charge conditions.