I just realised that the charger that I found is for 4 cell batteries... and the zippy's a 5 cell. Almost shot myself in the foot there.

So I'm still looking for a charger/balancer. There's one by Overlander that's around £45, so I could end up buying 2 of those so I can charge said batteries... And I tried looking up what Alan said about the Accucell t100 and it looks a little sketchy... Does anyone have any recommendations/thoughts upon this?