Cordless Drill Battery Pack Rebuild for $20 or Repair for $0
Nicd Battery Pack Rebuild
Total cost at time of rebuild was $22.54 to rebuild the entire 14.4V Pack with better than original batteries.
Here are soldering tabs:http://amzn.to/2dMfqFX
Here are great cells with tabs pre installed: http://amzn.to/2ld99IF
16 cells= 19.2 v packs
15 cells=18volt packs
12 cells =14.4volt packs
10 cells = 12volt packs
If you need a soldering iron: http://amzn.to/2ldgPuD
This is my favorite 140watt: http://amzn.to/2kAYbK1
“Sub C” are approx 1-11/16″ or 43.1mm tall
“4/5 Sub C” are approx 1-5/16″ or 33.4mm tall
Both are approx 7/8″ or 23mm round the same as a C size battery
UPGRADING TO LITHIUM: https://youtu.be/q2eaKCzf04c
I didn’t want to go too much into the theory of load testing the cells. You can charge the pack and let it sit for a few days/week. Then put a flash light 3v bulb onto a individual cell and measure the voltage as the bulb is attached. You’ll be able to determine the strong cells vs the weak. The good cells should stay around 1.3 volts or more. You’ll see some drop right under a volt immediately(those are really bad). Letting it sit for a while shows you the cells with high self discharge rates.