My Sony Viao laptop battery does not hold charge, this has happened after years of misuse (using it with the AC lead in). Before I buy a new battery, is there a way of ensuring the battery needs replacing rather than the laptop not charging properly?
Depending on the type of battery the only thing you could try is to cycle it, flatten the battery totally, recharge to full then flatten it again. Do this about 3 or 4 times, if that fails then a new one would be necessary. Looking on the web the Sonys in common with most laptops I believe use Lithium batteries so this will probably not work but theres no harm in trying it. If you do a google search you will find hundreds of uk companies selling cheaper versions of the Sony battery and its worth looking about.