Works great. I have a D4 for home charging, bought this one for on the go. Planning 2 one week trip and this will come in very handy charging while we are on the road.

Works well

Have used on multiple brands of 18650 batteries. Works great. Only real beef is 500 mAh max charge rate. Takes 5-6 hours to put a charge on 2500-3000 mAh batteries. Li Ions can charge at 0.5 to 1C, which is to say a mAh charge rate of half to all of the battery's capacity. Would be nice to dial up to a nice conservative 0.5C to charge them in 2 hrs. Considering trying to build a charging cradle to use with my Tenergy hobby charger.

Very bright light, active motion sensor from at least 3 feet away. I would have given it 5 Stars but the light turns off after 15 seconds whether you are still in front of it or you have left the room.

It is a great little device for many dark areas of house when you don't want to bother with manually turning on lights upon entry and perhaps not staying long in that room. Got so tired supporting the battery industry!!! Guess we'll see how it does long term, but for now I'm totally impressed!