Thread: Which headlamp to buy???

Originally Posted by gonetropo

now as some of you know i repair allot of weird electronic gear so heres a little story
attached are 2 photos, its a pair of 18650 batteries in parallel so theoretically 3.7 volts but double the current capacity as they are in parallelAttachment 153496Attachment 153497

well my customer complained his light didnt last as long as his mates one with the same model. they both dragged the same current so i cut open the battery pack, the one at the top is a 18650 battery, what is below it is a fake battery filled with what looks like sand to make it weigh the same. since they are in parallel not series the light still works but runs out of power earlier than a proper 2 battery unit.
and this is why you always buy name brand batteries from a reputable person or company

I have had raging customers complain about Nitecore batteries they bought on AE for less than $3 and swear they will never buy Nitecore again as a result. Same thing once cut open, fake Nitecore. I don't personally know of but have read about fake Olights as well. One has to be so careful and as you say, buy from reputable dealers.