Help! Battery charger will not charge.

[wildcat45]

Hi, I am in a spot of bother.

I have a Ring RCB212 battery charger that although connected up to my car battery properly won't charge.

There is no charge light.

It's all connected up ok.

Any thoughts appreciated

[73mark]

Fuse

[With these feet]

Is the car battery completely flat? Some "intelligent" systems wont charge unless there is a nominal voltage for it to work.

[wildcat45]

In the charger? I never thought f that. Cheers.

[hotchy]

It'll be the fuse, both ends would have touched before use or after and it pops the fuse. Iv got a we set of fuses as mines always pops after every few charging sessions when the first frost hits.

[wildcat45]

With these feet said:

Is the car battery completely flat? Some "intelligent" systems wont charge unless there is a nominal voltage for it to work.

Not totally flat but itlooksso now. I leftist connected for an hour thinking that it may come right but no luck.

I am a total fkwit when it comes to mechanics . I would to my LandRover but I'm not going to risk foobaring the electrics of a 40 grand car (my wife's ). A grands worth of Xreg MG I can just about afford. :-)

[Mr2Mike]

As said, 'intelligent' chargers require a minimum voltage level on the battery for them to start charging. If you have a set of jumper cables you could connect the dead battery to a good battery for a few minutes to get the voltage up.

However if a battery is dead enough that one of these chargers won't operate, then it's quite likely to be damaged/degraded especialy if it's been in a deeply discharged state for some time. It will probably still charge, this can cause reduced capacity and/or high self discharge afterwards IME.

[wildcat45]

The stupid and annoying thing is I have one of those yellow jumper packs. Since moving house, I have lost the charger. I have a box of random chargers, but none work.

That would sort it in an instant. Anyone know of the right type I need to buy?

[miniman]

wildcat45 said:

The stupid and annoying thing is I have one of those yellow jumper packs. Since moving house, I have lost the charger. I have a box of random chargers, but none work.

That would sort it in an instant. Anyone know of the right type I need to buy?

So you have a charger, and a boost pack. I charge my boost pack from a standard charger since I lost the "correct" charger - make sure it's switched on and hook it up to the charger, you never know!

[skyrover]

did you try starting the car with the charger still attached?

This can often blow the fuse if the charger does not have a start assist function

[wildcat45]

I plugged one in and it started buzzing! A kind of high voltage not good buzz. I am a dangerous fkwit when it comes to this sort of thing.

Would a laptop charger work?

[miniman]

Show us some photos of what you've got!

[wildcat45]

It's this one.

http://www.ebay.co.uk/itm/Dynamic-Jumpstart-Jump-s...