Laptop batteries have a finite lifespan. A laptop batter which is more than a year old may have less than half as much storage capacity.
I would not buy a used laptop battery unless it was extremely inexpensive, and then only if I already had a battery i could depend on (would use the other as a backup)
no
Depends on the brand and model laptop. Can be anything from 10 to 16 volts. You must buy a battery that is specific to your laptop.
You need to buy a new battery look up which battery works with your laptop and buy it online
Fujitsu LifeBook N6010,LifeBook N6210 battery for my laptop? How long does the 9-cell battery last? Should I buy a second one? Can people recommend this for me? Thanks!
It base on the model of your laptop, laptop battery has it's own model too. And different battery's model may fit one laptop model. Your question answered by battery specialist hklika.
lithium
It depends on what kind of laptop you have. Different laptops take different batteries. You should try www.ebay.com. Also www.amazon.com, and look up what battery yours takes first.
Asus ul30a-x5, you will like the battery life too.
the battery charger and the charger are the same thing. the charger charges the battery and the laptop runs off the power from the battery. hope this helps
See below-
One of the least expensive places to look to replace the battery for your gateway laptop would be ebay.com. Often you can find several items priced much lower than retail sites. Other sites you should also check Radio Shack, Best Buy, or Amazon.
There are different external laptop battery products available for purchase, but these are often used for travel accessories. Getting one of these batteries is a good investment if you plan to buy one to keep using your laptop after the regular battery has run out of power and you won't be near a wall outlet for awhile.