My new Warsun A10 may be defective... help?

Hey guys and gals.

I got this fancy new Warsun A10 a couple days ago. When I get it situated, I will take some nice photos and compare it to a no name torch and my soon-to-arrive Convoy C8.

When I put the A10 on charge with the provided wall charger (I paid extra for this!), the light turns on by itself and cannot be shut off. I have to unplug the charger to shut it off.

This is not normal, right? Does anyone know how I could maybe fix this myself? If I/we can’t get this situated I’ll contact Banggood.Com and see what they’re going to do to set this straight.

Here’s a video I made with my phone… Dropbox - 2014-07-01 19.53.28.mp4 - Simplify your life

That’s definitely not right.

I know this is an old thread but there is very little information out there about the Warsun A10 and I came across this thread having bought one myself. Mine does the same as the op’s! There is no manual that I can find (google trolls please correct) but I have worked out by trial and error that this is probably what it should do. I hope this will help anybody else who gets one of these because I think it is actually a nice but surreal unit with some surprise uses.

When you plug a charger in it will power the LED and the battery will be ignored. To toggle the charge mode you have to then press and hold the side button for 5 seconds. The light will go out and the battery will charge. Note do not put 5 volts in, it has to be 4.2.
Conversely if you plug an output usb converter ie 4.2 to 5 volts it will be dead until you press and hold the side button for 5 seconds.

This is an unusual arrangement and as a portable charger is a useless unit unless you can find a decent 4.2 to 5 volt output lead, especially if you need 2.1 amps. The torch is cheap because they have not bothered to fit a charging circuit.
On the other side of the coin the fact that you can supply the LED directly with 4.2 volts means you can run it without a battery fitted and potentially as many mAh as you want. The reverse of this ability is to supply a 4.2 volt device, eg a headlight, with the battery directly without the LED on the torch turning on (using a 5.5 to 2.5 adapter plug).

The most strange thing about the Warsun A10 is the battery configuration. It comes with a removable extension body tube that allows it to use a single 26650 cell when removed. When the extension tube is fitted you can only use the warsun supplied special battery stick, which is two 26650’s in parallel, but end to end, so outputs 4.2 volts. It would be far too easy to fit two 26650’s in series at 8.4 volts and smoke the driver and/or LED. The unit Banggood sent me had no manual, battery or anything so I have had to work this all out in stages. Luckily I never tried it with a pair of 26650’s! Clearly you could try to make your own parallel masquerading as a series unit. I will not bother.