I remember when I first got my FX5...I had 1800 mAh rating batteries in it and it would not work...Notice FP uses 2400 mAh batteries..Once I went to that rating the FX5 worked great...Months later in Boscovs..(Camera department) I found 2650 mAh ratings..Now these worked great..The FX5 worked for long periods of time...However today..$8.00 for 4 each 3000 mAh rating batteries and a charger. Of course I purchase two sets and will try them in my FX5. I have them charging now in new charger... One can't have enough chargers and good batteries...
If you would like same...Check at a Ross Department store near you for these 3000 mAh rating batteries.. Name brand is Concepts and you can charge AAA/AA batteries. I got mine in the Carlisle store but can't remember if there were more on the rack there or not.. Good Stuff Cheap For The Outdoors "Ross Department Store!"