Always follow these safety precautions when charging or handling a battery.
- Wear eye protection when working around batteries. Batteries contain corrosive
acid and produce explosive gas a byproduct of their operation. Acid on the
skin should be neutralized with a solution of baking soda and water made
into a paste. In case acid contacts the eyes, flush with clear water and
seek medical attention immediately.
- Avoid flame or sparks that could ignite the hydrogen gas produced by the
battery and cause an explosion. Connection and disconnection of cables to
battery terminals is one of the most common causes of sparks.
- Always turn a battery charger off, before connecting or disconnecting
the leads. When connecting the leads, connect the positive lead first, then
the negative lead, to avoid sparks.
- When lifting a battery, use a battery carrier or lift at opposite corners
of the base.
- Be sure there is good ventilation in a room where the battery is being
- Do not attempt to charge or load-test a maintenance-free battery when
the charge indicator dot is yellow or clear, or otherwise indicating insufficient
- Disconnect the negative battery cable if the battery is to remain in the
vehicle during the charging process.
- Be sure the ignition switch is OFF before connecting
or turning the charger ON. Sudden power surges can destroy electronic components.
- Use proper adapters to connect charger leads to side terminal batteries.
- When turning the charger ON, slowly increase the charge rate.
If gassing or spewing occurs, turn the charger OFF.