I am convinced that the batteries are not only from the same manufacturer they are from the same assembly line! Since it (not supplied by Ricoh) are at the associated chargers similar price differences, I use this Panasonic / Lumix: Original Charger Panasonic Lumix CGA-S005 DE-A12A
I prefer a star off because I miss a protective cap to indicate the charge state, as such. B. Canon batteries usual.