21-11-2016, 11:00 PM
When I looked into this issue the answer was to have a small transformer or metal boxed SMPSU operated by a little micro-switch in an enclosure that can handle the result of a Li-iron battery going off.
You would just plug the item in and place it on the micro-switch to charge. I never built one but I do most certainly charge some items in a metal container all the time.
I consider 500ma to be the maximum I would trust when charging things like E-cigs as these rarely have anything but a far east CE mark on them,
The USB outlets in those power socket face plates have a much higher current limit usually in the region of 2 amps. This is far too high for anything with a Li-iron battery that has a far east CE mark. Just don't risk it.
I don't buy those power sockets and charge things from a spare port on my computer as this will shut the computer down alerting of any trouble well before any pops or bangs that may result if there is no monitoring.
You would just plug the item in and place it on the micro-switch to charge. I never built one but I do most certainly charge some items in a metal container all the time.
I consider 500ma to be the maximum I would trust when charging things like E-cigs as these rarely have anything but a far east CE mark on them,
The USB outlets in those power socket face plates have a much higher current limit usually in the region of 2 amps. This is far too high for anything with a Li-iron battery that has a far east CE mark. Just don't risk it.
I don't buy those power sockets and charge things from a spare port on my computer as this will shut the computer down alerting of any trouble well before any pops or bangs that may result if there is no monitoring.
