[vision2000]

I have a dell 300M from a few years ago. About couple months ago the original battery stopped charging so I bought a replacement battery which, when at 100%, was able to last about 4-5 hours. But lately it will only charge up to 33% which will only last about 50 minutes. Does anyone know why?

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First, your computer is already a few years, which means it's gonna need more maintainence.

About the battery, I do think it's a reject. Might be that the battery is not made properly, causing parts of it not to be charged with electricity. Try bringing it back to the shop and ask them to check it out, if you have the receipt I do think they will change a new one for you.

Hope it helps.

~Kelvin

[Kelvin]

First, your computer is already a few years, which means it's gonna need more maintainence.

About the battery, I do think it's a reject. Might be that the battery is not made properly, causing parts of it not to be charged with electricity. Try bringing it back to the shop and ask them to check it out, if you have the receipt I do think they will change a new one for you.

Hope it helps.

~Kelvin

[pip22]

Running your laptop on mains power on a regular basis for hours at a time without removing the battery will also send the battery to an early grave caused by overcharging.

[vision2000]

Wow, I didn't know that I should remove the battery while on AC power. I do that all the time! As for Kelvin's suggestion of sending it back to the shop, I don't think I have the receipt nor the name of the shop. I ordered it via the internet from some online battery store. Though it has only been 2-3 month, I guess the battery is wearing out quicker than I expected. Thanks for the info, guys!

[Kelvin]

Oh. Then my suggestion for you is to use your battery properly. No warranty means no repairs. You'll have to buy another new one in case it spoils.

Oh yes. Another tip. If you want to plug the laptop onto AC, pull out the battery first. 2 reasons:

1.) Won't overcharge the battery.
2.) Can just pull out the plug in case your mum happens to come in =D

~Kelvin