Battery maintenance software

Firstly I know I am asking for a software recommendation, but the real issue is about Laptop batteries.

The boss at work is getting no charge of the battery, until he brings it in I am pretty sure the battery may have died.

But I want to know what is the best utility to test and/or fix the battery's capacity and health

Any help much appreciated, I did a quick search but nothing obvious came up, but am sure you people can quickly point me to the best software

Thanks

coconut battery is good for checking the health of a battery

coconut-flavour.com - [coconutBattery 2.6.5]

Thanks for that

Software does not dictate the health of a battery. No software program will be able to recover lost capacity or improve it's life.