Check the water level every couple of months. It should be just touching the bottom of the refill hole.
Refill the battery, when needed, with distilled water. Don't use tap water, which produces corrosion on the terminals.
Don't overfill the cells. Just to the bottom of the refill hole is perfect.
The following tips apply to all batteries, including maintenance-free.
To ensure good connectivity, clean the terminals periodically with a wire brush.
When removing a connector from a terminal, twist it from side to side and pull gently upward. Refrain from excessive tugging or prying.
When reconnecting a connector to a terminal, seat it down firmly on the post. A few gentle whacks from a rubber mallet will do it. Don't over-tighten and strip the nut.
After securing the connector, coat the whole post with Vaseline or Battery Terminal Coating Spray. This will reduce corrosion and rust.
If you keep having electrical problems (battery dies, car won't start, power is intermittent or weak), it's not necessarily the battery. It could be in the charging system, normally either a bad alternator or voltage regulator. A mechanic can test the system to isolate the problem.
These general maintenance tips will extend the life of your battery.
BatteriesPassenger car batteries BOSCH Silver Perfect Maintenance Free (PMF) Battery comes with breakthrough Silver alloy technology. This means it offers greater electrical conductivity and better corrosion resistance, substantial increase in service life, and a totally maintenance-free battery experience.
Factory charged and sealed; so, no charging or topping required
Consistent power output
Withstands heavy loads
Greater acid volume above the plates (safety reserve)
Side wall ribbing
Polyethylene envelope separators
The sealed maintenance-free battery has optimised grid geometry and contains calcium silver alloy that offers excellent cold start performance, improved power consumption during charging, greater starting power and longer service life. The water consumption is much less than conventional batteries because the labyrinth for gas condensation and return to the battery minimises the loss of water.
Better short-trip resistance
Improved cyclic loading
30% higher starting power
Minimises the danger of ignition from external sources
Truck and tractor batteries: Bosch Ustad and Kranti
Higher cranking power
Low on maintenance. Special hybrid alloy minimises water loss
Extreme vibration resistance. Ribbed container withstands temperature extremes and shocks/ vibration damages
Factory filled and wet shipped
Better corrosion resistance with superior plate design and weld systems
No electrical shorts, with glass matt lined enveloped PE separators