[Elecraft] Battery Charger for Small Solar Power Syatem

[Bill Johnson]

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: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Wilson Lamb
Sent: Saturday, January 4, 2020 7:55 PM
To: elecraft at mailman.qth.net
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
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