Battery acid can cause burn : -

Use extreme care when handling acid. If electrolyte is spilled or splashed on to clothing or the body, wash with water & neutralize with a solution of baking soda & water. Electrolyte splashed into eyes is extremely dangerous. If this occurs gently open eyes & wash with cool clean water for 5 minutes and call a doctor.

If electrolyte is swallowed : -

Drink large quantity of water or milk , follows with milk of magnesia, beaten eggs or vegetable oil and call a doctor.

If it is necessary to prepare electrolyte : -

Always add concentrated acid to water - never water to acid. Store electrolyte in plastic containers with sealed cover. Do not store in the sun.

Exploding battery : -

Batteries generate explosive gases during vehicle operation & when charged separately. Flames, sparks, burning cigarettes or other ignition sources must be kept away at all times.

Always shield eyes when working near batteries : -

When charging batteries, work in a well ventillated area never in a closed room. Always turn the battery charger or the ignition off before disconnecting a battery.

Return used Batteries project the Enviroment :-

Lead, a major component in your battery, is one of the most valuable metals in the world, serving many needs. But if this is not handled properly than it can harm environment and your health.
Be sure to return your used battery to authorised dealers only and prevent it from falling in wrong hands.