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Discussion Starter #1
So I accidentally left the key on...... Well you are well aware of the
outcome! So my battery charger died a few years ago and I thought
I better go buy something good. I picked up a 45 Amp Stanley
Smart Charger from Walmart and it has nothing but five star reviews.

Come home hook it up and start charging the battery and about 12
minutes into the charge I hear "click" and the LCD screen on the
charger shows the clamps flashing (not a real specific error).

At that point I was like the hell with it, it's a tomorrow project. So I
come home from work tonight and pull the battery out of the Raptor
so that I can really get the clamps on the battery. Fire up the charger
and about 12 - 15 minutes again *click* and it shows flashing clamps.


So at this point what is more likely??? Is it likely that sucking the
battery dry ONCE killed it? Or do I have a brand new junk charger
that I need to return? Do you think the internal resistance of the
battery is just too high for this whiz bang charger to deal with?

It said it was putting 24 amps into the battery. I have no way to
adjust the amount of amperage it puts out, it floats automatically.


I can't imagine draining the battery one time would kill it. What
say you?
 

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I may be getting older, but I refuse to grow up!
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Is your charger 45 amps or 4.5 amps. 45A is great for a automotive battery, but way to much for a small cycle battery. You should get about a 2A trickle/float charger. I have a cheap one from harbor freight and a better (??) one from Cycle Gear. They both do a good job. Over charging can ruin a battery, indicated by a hot or distorted walls, low voltage, or not holding a charge.
 

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Discussion Starter #3
Is your charger 45 amps or 4.5 amps. 45A is great for a automotive battery, but way to much for a small cycle battery. You should get about a 2A trickle/float charger. I have a cheap one from harbor freight and a better (??) one from Cycle Gear. They both do a good job. Over charging can ruin a battery, indicated by a hot or distorted walls, low voltage, or not holding a charge.
http://www.stanleytools.com/en-US/products/automotive-tools/other-tools/battery-chargers/25-amp-battery-charger-with-75-amp-engine-start/bc25bs

It is "supposed" to be able to vary the charge amperage on the fly.
 

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I may be getting older, but I refuse to grow up!
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10,572 Posts
You can vary the charge rate, but will it know the battery size? A bigger battery can take a high charge rate, but the smaller battery may not. If the meter is showing more than 4-5 amps, that's too much for a cycle size battery. Your charger may work OK to maintain, if the battery is already charged. OR, connect a automotive battery in parallel to the cycle battery. This will help equalize the charge. Is your battery new enough that you can warranty it if it's bad?
 

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Discussion Starter #5
You can vary the charge rate, but will it know the battery size? A bigger battery can take a high charge rate, but the smaller battery may not. If the meter is showing more than 4-5 amps, that's too much for a cycle size battery. Your charger may work OK to maintain, if the battery is already charged. OR, connect a automotive battery in parallel to the cycle battery. This will help equalize the charge. Is your battery new enough that you can warranty it if it's bad?
Yeah I've only had the quad for a few months.

I will take the charger back and get something smaller and try it
first.
 

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Discussion Starter #6
@DEZPERADO

Well I took the Stanley charger back and picked up a Schumacher that is meant for Motorcycles/ATV's it's a Charger and a Maintainer. It was half the
price of the Stanley and it's charging the battery right now with zero issue! :)
 
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