DieHard Platinum 6V/12V Battery Charger and Maintainer $23 + Free Store Pickup

Best maintenance battery charger I've ever used: http://www.amazon.com/gp/product/B000CITK8S

I don't trust the Schumacher chargers after it smoked my Optima Red Top while charging at 2 amps.

Quote from binji : I've been waiting for the Diehard battery charger model 71222 [sears.com] to come on sale again! It's been a long time since the last time it was on sale.

Me Too I am holding out...

Uh,a "maintainer" IS meant to keep your battery charged.

Quote from immad : No this is not designed to charge dead battery. These are maintainer, they are mean't to keep your batteries charged.

Quote from Interex : Best maintenance battery charger I've ever used: http://www.amazon.com/gp/product/B000CITK8S I don't trust the Schumacher chargers after it smoked my Optima Red Top while charging at 2 amps.

Finally, someone mentioned it For only a couple bux more (maybe even less than that with tax vs non-tax) you get what seems to be the original maintainer that everyone based theirs off of.

Going to get the Battery Tender Junior for my car, and use the DieHard model I already have for my lawn equipment and kids toys.

Quote from ATE : http://www.amazon.com/Schumacher-...ry+charger For my money this is a better charger...

For my money this is a battery charger...

http://www.amazon.com/Battery-Ten...ery+tender

Quote from kfunk7 : For my money this is a battery charger... http://www.amazon.com/Battery-Ten...ery+tender

Congratulations, you posted a link to a battery charger.

Quote from ATE : Congratulations, you posted a link to a battery charger.

no s*** Sherlock

another option to what OP posted

Quote from immad : No this is not designed to charge dead battery. These are maintainer, they are mean't to keep your batteries charged.

Actually a lot of regular automatic chargers are also not meant to charge completely dead batteries because they require at least 8 volts across the terminals or else they won't send any current into the battery. This is related to a feature that prevents sparks when connecting the cables to the terminals.

Quote from MIjnWraak : As per a review, "it can only charge batteries up to 550 CCA". I have the same charger (bought a few months ago) and used it to charge my dead battery, which has 650 Cold Crank Amps. Once it gets to 100%, if you remove it and apply it again it will state it's at 95%. So if your battery has more than 550 CCA, I'd find a different charger unless you needed to charge a dead battery overnight.

This I don't understand because I don't think there's any way for a charger to accurately measure the amp rating, and when it comes to charging, the more important ratings are the for the energy capacity, usually stated in amp*hours (typically about 60 amp*hours) or reserve capacity (number of minutes battery can put out 25 amps and stay above a certain minimum voltage). A battery can be built a high amp rating at the expense of energy capacity, such as by increasing the surface area of the plates and using thinner plates. However for a last-ditch method of preventing battery damage, some chargers use a timer in case they can't sense full charge by voltage, which can happen if a battery cell is shorted.

Here's how much capacity no-maintenance batteries (all plates are lead-calcium) and low-maintenance batteries (at last half the plates are lead-antimony) lose in storage (also shown is how much water each type loses):

http://img687.imageshack.us/img68...waterl.gif

So if no-maintenance batteries retain 95% of their capacity after 180 days while low-maintenance batteries retain only 75%, why use them? Because they can withstand deep discharge better, 6 times versus 1-2 times for no-maintenance lead-calcium batteries. I can't find such information about completely sealed car batteries, like the Optimas and Diehard Platinums, which have no calcium or or antimony in their plates.

Can this charge my iPad ? Lol

Quote from lolo978 : Can this charge my iPad ? Lol

sure can! take each terminal of the battery charger and connect them to your AC adapter. Polarity doesn't matter.

Quote from imlkrsfn2 : Does this work to charge a dead car battery?

great deal

thanks OP! In for one!

deal is dead

Ordered yesterday.
Got an email saying "This item is out of stock and your order has been cancelled."
Website says "In Stock TODAY" (just like it did at the moment I ordered) and the price is 37.99.
Asses.
And don't give me that "oh, only *some* of them were $22.99".