BATTERY RELATED ORAL.

BATTERY ROOM  SAFETIES

• Ventilation fan with suction duct slightly bellow battery level to suck any combustible gases. Specially H₂ and O₂ , discharged during charging.
•  Connections are strongly joined and petroleum jelly applied. 
• Anti corrosive paint on the floor.
• Plastic electrolyte filling funnel and jar. 
• Explosive gas proof room light arrangement.

TO KNOW BATTERY CHARGE IS FULL

• By measuring specific gravity using hydrometer, about 1.265. Fully discharged battery specific gravity 1.1.
• By seeing the indicator, digital or light.
• By measuring voltage, slightly above battery rated voltage.
• Overcharges batteries shows electrolyte bubbles. 

DIFFERENCE BETWEEN CONVENTIONAL AND MAINTANANCE FREE BATTERY

Conventional

Maintenance free

a. Water loss and distillated water needs to be added.

a. No need to add any water.

b. Not sealed.

b. Fully sealed.

c. Relatively cheap.

c. Expensive.

d. Explosive gas emits during charging.

d. No emission, as totally sealed.