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 Post subject: Battery charger
 Post Posted: Mon Jun 08, 2009 5:02 am 
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What are you guys using between rounds for a quick charge???

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 5:38 am 
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Location: Elizabethtown, KY
I set it for 15 min at 20 amp. I got it at Sams for $80

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This wheel charger features a timer controlled manual setting that provides overcharge protection and a 225 amp engine with a start setting that provides instant starting power. The multiple speed charge settings are in place for a quick charge. The 2 amp trickle charge setting keeps batteries fully charged and maintained while not in use extending the life of the battery.


Timer controlled manual setting provides overcharge protection
225 amp engine start setting provides instant starting power
65/40/20 amp speed charge settings
Multiple speed charge settings for a quick charge
2 amp trickle charge setting keeps batteries fully charged and maintained while not in use extending the life of the battery
For use with 12 volt batteries

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 5:44 am 
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Location: Stranded in Iowa
http://store.schumachermart.com/sc-1000a.html
I run an Optima red top gel cell and they have a maximum charging rate. This charger keeps my battery topped off. I also run an alternator.

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 6:31 am 
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oldtimer wrote:
http://store.schumachermart.com/sc-1000a.html
I run an Optima red top gel cell and they have a maximum charging rate. This charger keeps my battery topped off. I also run an alternator.



ok so what is the max amp rate for them???

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 7:16 am 
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Location: Bronson,MI
12v napa orbital, 100amp east coast alt, never gets charged on race day and rarley does during the week. \:D/ When it does though, black and decker digital charger, got it at wally world has been great.

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 8:27 am 
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Beretta wrote:
oldtimer wrote:
http://store.schumachermart.com/sc-1000a.html
I run an Optima red top gel cell and they have a maximum charging rate. This charger keeps my battery topped off. I also run an alternator.



ok so what is the max amp rate for them???


X2 :-s

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 8:40 am 
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I never charge mine at the track but I also run a 70 amp Mazda alternator. I don't even have a batery charger in my trailer! I got a charging setup in my trailer that connects the car to the truck's charging system so going to and coming from the track the race car battery is connected to the truck's electrical system.

K. I. S. S. on race day! =;

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 9:13 am 
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You guys are running alky............SOOOOOOOOO you don't have to run the fan for 10 minutes.......... =;

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 9:25 am 
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Beretta wrote:
You guys are running alky............SOOOOOOOOO you don't have to run the fan for 10 minutes.......... =;


I'm not running alky and so far the alternator deal works for me, no charging between rounds. I have 2 optimas in my car but I had been running on 1 because the other 1 was bad. Just replaced it and have only tested once since. You can watch the battery volts on the datalogger and it will not only tell you how it's charging during the runs but you can scroll to it to watch the volts. I usually run the fan and pump between rounds but I don't cool it all the way down. I like to pull into the burnout box with the engine around 150* and I run the pump & fan in the lanes enough to keep the temp where I want it.

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 10:02 am 
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Beretta wrote:
You guys are running alky............SOOOOOOOOO you don't have to run the fan for 10 minutes.......... =;


We bought a blower type fan and run it off the generator between rounds. We also run an alternator. I have found that the car is more consistant when I put the charger on between rounds. Don't ask me why but it does. I guess the MSD likes it better. I never used to charge it but the ET's were all over.

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 12:16 pm 
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Here is an info sheet from Optima. It shows 10 amp max charge rate, but as I reread the sheet it says you can charge with more amperage as long as the battery doesnt overheat.
http://www.optimabatteries.com/_media/d ... /34_78.pdf

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 12:31 pm 
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gearhead1011 wrote:
Beretta wrote:
You guys are running alky............SOOOOOOOOO you don't have to run the fan for 10 minutes.......... =;


I'm not running alky and so far the alternator deal works for me, no charging between rounds. I have 2 optimas in my car but I had been running on 1 because the other 1 was bad. Just replaced it and have only tested once since. You can watch the battery volts on the datalogger and it will not only tell you how it's charging during the runs but you can scroll to it to watch the volts. I usually run the fan and pump between rounds but I don't cool it all the way down. I like to pull into the burnout box with the engine around 150* and I run the pump & fan in the lanes enough to keep the temp where I want it.



Now Chuck your running 1/8 mile right??? I try to leave the starting line at 160 ish and by the time I get back to the trailer it's at 200+.......So the fan need to run a lot to get it cooled down...

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 1:42 pm 
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So I'm guessing 20 amp at 15 min shouldn't hurt it. The amps drop as it charges. normally it doesn't show much over 2 amps between rounds. When I flip the switch between 2 and 20 the needle moves very little.

Recharge Time: (example assuming 100% discharge – 10.5 volts)
Current Approximate time to 90% charge
100 amps 35 min
50 amps 75 min
25 amps 140 min

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 2:03 pm 
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Beretta wrote:
You guys are running alky............SOOOOOOOOO you don't have to run the fan for 10 minutes.......... =;


Oh but yes I do on hot days! And a lot of times I forget and leave it on between rounds. O:) Remember, I have CRS! =;

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 Post subject: Re: Battery charger
 Post Posted: Mon Jun 08, 2009 5:07 pm 
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Beretta wrote:
Now Chuck your running 1/8 mile right??? I try to leave the starting line at 160 ish and by the time I get back to the trailer it's at 200+.......So the fan need to run a lot to get it cooled down...


I have made a few time runs on the 1/8 this year but I have been racing 1/4 mile with the UMTR races. I just checked a couple of data logs and with the temp at 150-155 when I launch it only gets to 165 at the top of the track. Even with the trip back to the pits I don't think it ever tops 190 and it cools back down fairly fast. I have left the fan & pump running before (crs like ken) and still don't have any trouble keeping the battery charged. Of course your torque convertor generates a bunch of heat and I don't have to deal with that =; .

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