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Re: Sovereign and Excal battery information 101
Posted by: Critterhunter
Date: July 16, 2012 11:47AM
I don't have that pack for that Sovereign to check but an easy way to tell if the center is positive or negative is to touch it and the outter part with a volt meter. Most volt meters will give a negative number if the polarity is reversed, then then swap the leads again and see if the volt meter says "- whatever volts". If it does then obviously the reverse of that is the right polarity for the plug, but not all meters will show a negative number so you need to try it both ways and make sure the meter will. If you don't have a meter to check with take it up to radio shack and I'm sure the clerk will be happy to check, or Ron or somebody will check and chime in with the right answer.

Yes, you can use a bigger capacity battery (so long as it's the same number of cells, meaning voltage) and that will give you more run time. And yes, you can use the stock "charger" *IF* there is no circuit inside that old battery pack. I don't know what kind of setup the XS had as far as if it was just a straight plug with no electronics on the pack or what. Either way, if there isn't any then all that wall "charger" is is a straight transformer. Look on the transformer and see how much output it has in amps. Probably either 50 or 100ma. Divide that into the capacity of the pack and that will give you aprox charge times. For instance, if it was 100ma output and you used a 1200ma pack it would take 12 hours to charge a dead pack roughly. In reality though charge times are a bit longer than the math says because charging is not very efficient. The Sovereign drains roughly 50ma if I remember right. So if you hunt for 10 hours figure about 500ma was drained from the pack. Divide the output of the transformer into that and you'll have an idea of how long to charge it up again for full capacity.

Now, these wall transformers are just putting out a trickle charge. That's why it's OK to mix or match nimhs or nicads on them as long as there is no charge circuit in the pack. I think even on the GT though that that charge circuit is just a diode and a thirmister to break the connection if it gets hot, or at least on older Sovereigns I think that was what they might have used. Don't take my word for it though. I'll let Ron or somebody who has owned that XS model tell you what if any circuit is in the stock packs and such. Just saying that if a battery contains a charging circuit other than just a simple thermister to break the connection if it gets too hot then don't mess with mixing nimhs and nicads. Just like on chargers...Never charge nimhs or nicads on a chargeer meant for one or the other. But that wall "charger" is just a transformer that puts out a trickle charge, so if there isn't a charge circuit and it's just a thermister or something you should be fine to use a nimh in place of the old nicad pack. Again, I'm just guessing because I never used an XS so don't take my word for it and let somebody else give you the straight right answers for sure on that.



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SubjectAuthorViewsPosted

Sovereign and Excal battery information 101

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Re: Sovereign and Excal battery information 101

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Re: Sovereign and Excal battery information 101. We need all your information.

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