Can dead battery be revived?

[apollo]

Hi Guys

Hv not used my notebook for awhile. Took it out and the battery wont retain the charge anymore.

Tried to get a replacement from the agent but still no sound no picture.

Can anybody tell me why it died a sudden death? Any chance to revive it??

Thanks.

Stephen

PS. For all you know... this might be a business in the making!

[loupgarou]

http://en.wikipedia.org/wiki/Lithium_ion_battery


At a typical 100% charge level (notebook battery, full most of the time) at 25 degrees Celsius, Li-ion batteries irreversibly lose approximately 20% capacity per year from the time they are manufactured, even when unused. (6% at 0 °C, 20% at 25 °C, 35% at 40 °C. When stored at 40% charge level, these figures are reduced to 2%, 4%, 15% at 0, 25 and 40 degrees Celsius respectively.) Every (deep) discharge cycle decreases their capacity. The degradation is sloped such that 100 cycles leave the battery with about 75% to 85% of the original. When used in notebook computers or cellular phones, this rate of deterioration means that after three to five years the battery will have capacities too low to be still usable.

[bclee]

There is a shop that specialises in batteries at Sim Lim Square that might be able to help you. I can't remember the name of the shop. It is near the food court at the ground level, a corner shop. It is run by a helpful guy who can help you replace the cells in the battery.

BC

[apollo]

Hi Bc

Thanks for the loabang.. The name of the shop is MHT and the guy is Harry.

Already got my battery replaced by him.

The answer on why the battery wont recharge anymore after some time according to him is this.

Nowadays, most appliances uses these so called "smart battery". These battery hv a chip inside them to disable the battery when the charge in the battery drop until a vry low lvl. The reason is to prevent them from short circuit which might result a fire.

Anybody beg to differ??

Stephen