I would tend to think that it would be no problem to use batteries in a parallel fashion, but it would be advisable to start out with fresh batteries for both legs of the parallel circuit. I'm not familiar with how the charging system is set up, but it would need to have an appropriate current capacity. Here's another idea for you, if you're interested. If there's room for another battery pack, it might be less radical to add the additional battery circuit with a switch to change back and forth between the two. If they're put in with the design that they'll never be operational at the same time, it wouldn't have any affect on the charging circuit at all. Switch in one position, it uses and charges one battery pack. Switch in the other position, it uses and charges the other battery pack. Sort of like a second gas tank on your truck. There are no doubt dozens of possible variations. Just a thought. Brian Trout Quarryville, PA btrout@desupernet.net ----- Original Message ----- From: John Ross <piano.tech@ns.sympatico.ca> To: <pianotech@ptg.org> Sent: Sunday, October 10, 1999 10:14 AM Subject: Re: Improved SAT II for sale > Hi Michel, > From reading the directions on rechargeable batteries, I notice that it says > never to mix the batteries in use or recharging. So I would recommend that you > disconnect the older battery from the SAT, otherwise it will be detrimental to > the life of the new one. > I have changed the battery pack in my spare SAT, with one from Radio Shack and > it is still working fine. > I would also think, that you would be putting an extra load on the charging > circuit. > So in my opinion it is a bad idea, to parallel the batteries. > Regards, > John M. Ross > Windsor, Nova Scotia, Canada
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