Of course you can get them direct from Daystate @ £30 and download a schematic on how to do it, but I though I'd put forward a helpful chap from www.batteriesplus.co.uk a Mr. Sean Johnstone who reckons he can put the individual cells together of the Varta 4.8v 600mAh 4/ V600HR Ni-MH for about £15 in no time at all, and he himself is a shooter belive it or not, but of the HMR bracket. He phoned me back personally to try and help, what service!