When I got the new batteries I popped them in and it worked fine. They still had charge in them but I wanted them to be full charge so I popped them on the charger and left them for about 8 hours and then took them out and put them in the laser then it would turn on and a couple seconds later...
I got new batteries for my 1 watt thor laser and posted a thread because I bought ETSAIR batteries and they don't work. So I bought better batteries . The vapcell T8 850mAh batteries. And they worked fine but then I put them on the charger overnight and now they turn on then power down slowly...