jimdoc
Well-known member
I (carefully) dismantle laptop battery packs for the 18650 cells, and use them to build flashlights, and universal power tool battery packs. I don't save any unless they are over 2.5 volts or damn close. I gut a bad tool battery pack and run the connections out to hook up the universal battery pack. Then use a Nitecore charger to safely charge the batteries. The battery packs I build are easy to switch out the cells for fresh ones. And any bad batteries are easily replaced unlike when they are spot welded together. And I plan on putting one of those battery monitor sensors in packs I build for extra safety. I have a few hundred good cells at this point.
On a few super bright flashlights that I bought on Ebay that take four cells have contacts that easily get scratched up from any remnants of the spot weld on the ends of the batteries.
these lights;
http://www.ebay.com/itm/22000LM-SKYRAY-9-x-CREE-XM-L-T6-LED-3-Mode-Flashlight-Lamp-Torch-US-SHIPPING/331826851330?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
So for those I found these like shown in this Youtube video at Walmart for $4 per four pack;
https://www.youtube.com/watch?v=plNo8PQYHBo
Figured on sharing the Walmart closeout info for anyone interested. You can't really go wrong with a buck a battery.
On a few super bright flashlights that I bought on Ebay that take four cells have contacts that easily get scratched up from any remnants of the spot weld on the ends of the batteries.
these lights;
http://www.ebay.com/itm/22000LM-SKYRAY-9-x-CREE-XM-L-T6-LED-3-Mode-Flashlight-Lamp-Torch-US-SHIPPING/331826851330?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
So for those I found these like shown in this Youtube video at Walmart for $4 per four pack;
https://www.youtube.com/watch?v=plNo8PQYHBo
Figured on sharing the Walmart closeout info for anyone interested. You can't really go wrong with a buck a battery.