Trickle charger/dead battery

Probably not if the battery is dead.

 

It should if left 12-18 hours.

 

some dead batteries reverse polarity and will not take a charge. my mechanic unreveresed the poliarity on on dead battery and its been like new for a few yrs now.
ed

 

Christ almighty........put the ****ing charger on it and see what happens. I'm slapping my head right now.

 

Glassman its not you that needs a slap on the head.

 

LOL!

Unhook the negative terminal on you battery and charge it overnight. Then take the charger off and measure the voltage between the posts immediately. Then wait an hour and re-measure the voltage and note the room temperature.

Report results back here or google how to test your battery and compare the results against what you find from google.

If those tests are inconclusive you can do a load test and charging test as well.

Still laughing at the previous post!

 

I doubt very much that your trickle charger will have enough "juice" to bring back a completely dead battery. If you have a voltmeter, put it on the battery and get a reading. If it's below 9 or so, the battery is very dead and its lifespan may have been compromised, though it's fortunate that it's only been a couple of days.

Furthermore, it's not advisable to jump start the car and charge the battery with the alternator. This puts a strain on the alternator.

My advice: Bite the bullet, go to Sears and pay 30 bucks or so for a full-size, 10 amp battery charger. Sears.com

 

Couldn't be more wrong, a trickle charger will bring a battery back if not too far gone.

 

"Couldn't be more wrong"? First, give me a break. Then, please explain the difference between my "completely dead" and your "too far gone".

 

A battery which cannot be revived using a trickle charger is dead. A battery that is completely down, but not dead, can be loaded again with any trickle charger.

If a battery does not have reduced internal resistance, it is merely a question of the equation capacity = current x charging duration, when the battery is fully charged again. If, however, e.g. by way of sulphation the internal resistance is reduced, then at least a part of the charging current will be "used up" by this internal "short". And the fully charged battery (if at all) will then go down again, even when just standing around without being connected to anything.