Just started using procells from babz myself, at NvS in mild weather the Ego8 managed about 9000 balls over 2 days before the battery gave out, mind you the battery indicator still showed half charge availableI use procells, I get off ebay from babzmedia. Cant go wrong really there just as cheap as the crap batterys you can get from tesco etc!
We do not recomend using re-chargeable batteries in your eclipse markers for 2 reasonsrechargeable! cost a bit more but in the long run they save you money