[Stormingshaz]

My BL-4C BATTERY HAS STARTED BULGING .WHY THIS OCCURING .I SAW MANY PEOPles whose bl-4c battery has swallen .is nokia replaces this battery in warranty period.or nokia is going to be the worst brand

[pudu]

if it happens within warranty period take it to nokia care point, they may replace the same on checking the statues.

[psychomania]

You should stop using that battery immediately and do not attempt to charge it. It can be dangerous using a battery in that state. Several things can cause bulging from manufacturing defects to being left in the sun.

In most countries the warranty period on batteries is six months. In some cases a care point will replace a bulging battery outside of the normal warranty period. Contact your nearest and ask for advice.

http://europe.nokia.com/support/repair-and-recycle/repair/care-points