i use a company called multicell in leicester, i met them at a show years ago at sandown park, - super service, the guys really know their stuff, and i have often called and asked questions on their products before purchase and i found i alsways got honest answers from them,
they will make up packs for you too in whichever voltage you require or whatever shape you need....
i have also bought standard type buggy type packs from component shop and always had good service their too
i have no connections with either company other than being a happy customer
http://www.multicell.co.uk/
