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skywagon
Joined: 11 Feb 2006
Posts: 184
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 Posted: Mon Aug 09, 2010 5:02 pm Post subject: Battery tender |
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Bill,
The BT is mass produced in a foreign land like everything else this country now uses.
Inside the box are two adjustable mini-pots. They were obviously set wrong as the float voltage should be about 13.1 to 13.3 volts. If you are handy you can change the float voltage pot. It is silicone'd to hold its setting so a little exacto knifing has to be done to get the pot to move. The pot change needed is "tiny" so if opened, go in baby sets and always do the experiment with a battery connected to the outputs and allow an hour or more for the new setting to stabilize.
Otherwise....just get another unit and test it thoroughly when opened so you can take it back if the settings are wrong. Be sure to use a good volt meter.
David
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n744bh(at)bellsouth.net
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| Posted: Mon Aug 09, 2010 5:33 pm Post subject: Battery tender |
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Thanks David,
I took Lectric Bob's advice and bought a Schumacher at WallyWorld for about $20 or so. But I still have the unit in question so I'm going to play around with it and see what I can do...when it cools off a bit here in Memphis.
Bill
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skywagon
Joined: 11 Feb 2006
Posts: 184
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| Posted: Tue Aug 10, 2010 1:31 pm Post subject: Battery tender |
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Bill,
I will be gone for a week or so.... I will try to remember when I get back and into my hangar to find the details I saved on 'which' pot handles the float voltage setting and which pot wiper arm direction will increase the voltage. Bug me, if you do not hear from my in 10 days or so......
Another thought.... when I first had my problem, several years ago, I called the manuf. and talked to the owner or someone that knew what I was talking about. After convincing him that I could handle the adjustment job, he told me which pot did what. So, you might try and call them and see if they are still hospitable about the answers......
David
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