I would echo that. The used laptop batteries, I have found, usually have only 1 dead cell. Be careful when harvesting so as not to short one. Nasty if you do.
73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Wilson Lamb Sent: Saturday, January 4, 2020 7:55 PM To: [email protected] Subject: [Elecraft] Battery Charger for Small Solar Power Syatem Start simple...car battery, or borrow from your lawn tractor. Small charge controller selected for min RFI. If the kid can concentrate on a job, salvage 18650 cells from old laptop batteries and build packs of whatever size you need. "Dead laptop batteries usually have just a couple of bad cells and some shops will give/sell them cheap. Ebay has the plastic hardware for assembling packs without duct tape. Get single cell chargers from ebay for initial conditioning. There's a lot of potential learning here! 73, Wilson W4BOH ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
