Date: Sat, 29 Sep 2001 13:16:42 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: Homebrew battery packs
Hi Dave, >How many cells are you running? >I wouldn't put much more into it than the 10.8V of a full charged Li-Ion pack, at >least not in through the battery terminals. Its a proper 10 cell 12 volt pack, I'm thinking of hooking it through the DC in port (I'm pretty much wanting to do what Xin does on that website I posted except I'm hoping to be able to use this NiMH pack I have lying around - I've opened it up, its just 10 Varta NiMH cells with what looks like a thermal fuse in series with it). Of course, by the sounds of things it looks like I'll be having to build a suitable circuit as well to make sure I don't blow anything on charging! >If you've got say a 9 cell pack, then you could do a simple slow charger. >You'll get into charge depression if you leave it on slow rate too long though. >The MAX712 is a decent charge controller, but it's a bit of a project. Any recommendations as to where I might find some more good information on the subject of (relatively) simple battery charger circuits? >Lead acid cells really are the simplest to charge. Just feed them a constant voltage, >limit the current, and you're done. I've not had any experience with them at all ... how do they compare with regards to price, weight and size with NiMH? Thanks for the info so far! - Raymond ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
