Xtar VP2 not working on 12v battery

Charger display doesn’t lit up while connected to 12V battery. I get 12.6V going in the charger with carplug (measured at the end of the cable). The poles of the charger read 1.5V.
Heavent measured while charging.
Charger works fine plugged into the mains. Didn’t measure while charging but my cells read 4.20 _4.22 right after charging.

I finaly got a reply from BG, took their sweet time but hoolidays were in between so……
Sugestions: Try it with a different battery, check the poles of the battery, read the manual blablabla. I use this battery everyday so if I mixed up the poles I would have noticed it by now I think. My VC2 charges just fine on it although I have to use 12v to5v usb converter plug with it. The manual doesn’t say anything about the provided car-plug but how hard can it be. I don’t think I plugged the wrong end of the suplied plug in the wrong plug of the battery or charger. It is physically not possible. I have already tried it on 3 batteries, do I have to video tape it every time?

hmm, thats an odd one alright

I’m thinking something is wrong with carplug cable, my friend tried to use it to run a D-Linkon 12v battery and it didn’t work either. I don’t have an other one like it laying around other wise I would have tried it. It’s weird though I read 12V at the end of the barrel plug….

If you can, check it under a load. I’ll bet there’s a significant voltage drop when loaded. Possibly a a cold solder joint or bad crimp internally.

Hmmm haven’t tought about that. I don’t see how I will be able to measure the barrelplug while under load, don’t know if I got something else than the VP2 laing around to test it with…. I’ll look around when I’m back home.