I've got a digital camera (Panasonic Lumix DMC-FS3) that uses a removable Li-ion battery that you pop into an separate charger connected to the mains via a figure of 8 cable.
The charger specs are
input 110v=240v 50/60 Hz 0.2A
output 4.2v 0.8A
Does anyone know if I can use this charger in Japan, which has mains at 100v?
Thanks