In the main cities including Kathmandu, Pokhara, Chitwan, you can easily charge the batteries at the hotel you are staying. However, during trek, you may charge some extra amount by the lodge’s owner for charging your electronic devices. The electricity in Nepal is 220-240 volts, alternating at 50 cycles per second. A voltage converter is needed for a device that does not accept 220-240 volts at 50 MHz. Sockets in Nepal accept only round three or two pins. So, if your electrical device uses flat pins, we would suggest you to kindly bring a universal electric plug adaptor.