Li-ion, also Lithium Ion

The latest type of rechargeable battery. Lighter in weight and can offer higher capacities over NiMH. Supplied as standard in most new laptops and notebooks. These can only be used in laptops that are designed for them.

Important note

Beware of refurbished Li-ion laptop batteries for bargain prices, due to the volatile nature of the Lithium Ion compounds, batteries must have matching cells and correctly calibrated control & safety electronics. All our new laptop batteries are made to the highest standards by quality manufacturers that also make original laptop batteries for many of the big brand names. Refurbished Li-ion laptop batteries are usually sold at highly discounted prices and thus are normally produced for the lowest possible price, often with little regard for thier long term stability, this can lead to them overheating or in extreme cases catching fire or exploding, this one area where quality should not be sacrificed for cheapness.

NiCd, Nickel Cadmium

Older type of rechargeable laptop battery. Loses it\'s capacity to hold a charge if not fully discharged then recharged regularly, this is also known as the memory effect.

NiMH, Nickel Metal Hydride

A newer type of rechargeable laptop battery. Offers higher capacities and improved performance over NiCd. Less prone to the memory effect than NiCd, but can still suffer if not discharged then recharged correctly.

RTC, Real Time Clock

A small battery that keeps the computers clock running even when the main battery is removed

Resume, Resume battery

Powers the laptop whilst it goes into stand by mode to allow the main battery to be removed and replaced without losing data.

2nd bay battery

Fits in the bay of a laptop normally where the floppy drive or CD/DVD lives. Gives you more mobile power capacity providing you don\'t need to use the floppy/CD/DVD.