I am making an LED rechargeable torch/lamp. I have an off-the-shelf charging circuit (see below) with micro usb to charge the battery and my question is this: Can I use the lamp whilst charging or do I need some extra circuitry? The charging circuit, when attached to a wall socket/USB adapter, outputs about 4.1V at the battery terminals, this is slightly higher than the nominal 3.7V of the battery and so the first problem will be that I will be over-powering my LEDs, this could be managed with a voltage controller so my main concern is that the extra load on the circuit, from the LEDs (100 to 300mA), will mess up the charging of the battery, possibly confusing the charging chip or maybe stopping the charging by robbing most of the available current....
Thanks in advance.
I am using this charging circuit to charge the battery:
http://www.ebay.co.uk/itm/272500082848?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
Thanks in advance.
I am using this charging circuit to charge the battery:
http://www.ebay.co.uk/itm/272500082848?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT