Battery Question

Left my lights on when I went to work so now have a dead battery, tried charging with trickle charger overnight but still won't start and lights won't come on so for some reason battery isn't charging.

Not sure if it's the battery or the charger.

I have a battery from my old car, if I turned it upside down and touched the terminals on the battery in my landy and tried to start is this something that is possible (I have no jump leads) or is it a completely stupid idea and will blow something?

If the battery is 100% bead you won't be able to charge it on its own. If you get jump leads from a friend and attach them to another good battery and the attach the charger to the dead battery it will trick the charge into charging the dead on for you. Also get a multi meter and check the voltage out the charger it need to be about 13+ volts DC. I hope this helps.

I'll see if I can get some leads then hook them both up, cheers

Please don't turn the battery upside down.

As stated above, dead batteries need a constant 12v supply to get them above a level that they will accept normal charing, most chargers stop if the battery will not accept 14v.

Probability is you have a dead battery and you need to get another one. They do not like going below 11v.

The battery will light the dash lights up but will not start the car, not enough power to power the lights though.

Do you think it is past revival?

Do you think my 200tdi would run on a 80ah 450A Battery from a 1.9CDTi ?

John506 said:

The battery will light the dash lights up but will not start the car, not enough power to power the lights though.

Do you think it is past revival?

Do you think my 200tdi would run on a 80ah 450A Battery from a 1.9CDTi ?

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Might give you the help you need to jump start it, but I think the Land Rover will need something a bit more powerful in the long term, especially with winter coming.

Starter batteries aren't designed to be fully discharged, which is why leaving your lights on will reck them even if they're not completely dead. You can get dual deep cycle/starter batteries (Odyssey make some) which can handle that kind of Abuse better.

Battery is nackered. Get another one

take your battery inside, they won't take a charge in sub zero. it's worth a shot before a new one.

check your charger out with a bulb just to make sure it's not goosed

defender11069 said:

check your charger out with a bulb just to make sure it's not goosed

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That won't work with most modern intelligent chargers as they look to see if battery voltage is present (and correct polarity) before they switch the charging current on. Basically if there is no battery voltage then it wont supply any output which is why you can touch the crock clips together and don't get any sparks (unlike the earlier 'dumb' chargers).