Battery Charger for Small Solar Power Syatem

[Wilson Lamb]

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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[Bill K9YEQ]

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: [hidden email] <[hidden email]> On Behalf Of Wilson Lamb
Sent: Saturday, January 4, 2020 7:55 PM
To: [hidden email]
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:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email]
______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html
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