I have two 'intelligent' battery chargers that refuse to acknowledge any of my 3 totally flat batteries.

How can I recover these to get them charged up??

I wrecked my old skool charger during the electrolysis process...

well they aint that clever are they

cant help but wish you luck.If you can start your car could you not jump lead across from car to battery.If you can get a bit of charge in the smart arse charger may react.

[Edited on 17/5/2009 by westf27]

I've had the same problem.
As you already know, you need a THICKO charger, to kick start them.
Jumping is unlikely to do it, the voltage is not high enough

[Edited on 17/5/09 by ReMan]

Can you not put a bulb across the battery as well say a 12 Volt 21 watt. I guess it depends on if the charger requires a load or a voltage on the existing battery.

Adrian

I've an old cordles drill cgarger for this purpose. Puts out 0.5amp and usually
does the trick.
But not if it's totally fubared.

I hd a similar experience with an Optimate on a bike battery, what I did was connect the charger up then touch the terminals of the bike battery with another 9.7v source, by coincidence it was a cordless drill battery and the charger started to play ball at that point.

Never recovered the battery though My fault for leaving a battery in the bike for too long discharged.

[Edited on 17/5/09 by locogeoff]

I have had the same issue and have found that connecting it up to charge and then using a pp9 9v battery touch on the terminals and quickly removed (we don't want it to explode ) seems to get it started. This is on a halfords own intelligent charger.

regards Pete