This is my first battery pack I've opened. Black N Decker 20V 2AH

20V ULTRA Li-Ion Cordless 4-1/2 in Angle Grinder – MOTORHEAD & STEELHEAD Tools

This vacuum battery is a replacement for the Black & Decker 90584779 and all compatible models listed below. It is made with high-quality cells and meets or exceeds the original manufacturer's specifications.

Battery for Black&Decker Flexi PD1080 H2, PD1200 H1, Z-PD1200

20-volt Lithium Ion battery pack for 33% more run time The PowerDrive Transmission delivers more power from the motor to the cutting string so you can

BLACK+DECKER 20V MAX String Trimmer with Extra Lithium Battery 2.0 Amp Hour (LST300 & LBXR2020-OPE)

I was impatient when building my solar battery pack, and did not balance the cells. I assumed the BMS would do so very slowly, however the voltage Delta has gotten worse since

20V 1/2 Brushless Cordless Drill/Driver (Battery and Charger Not Included) - HART Tools

Black + Decker 20v Lithium Replacement - Better Than the Real One? 3.0AH

20V Max* 4.0Ah Lithium Ion Battery Pack

2 nearly new Black & and + Decker 2AH lithium batteries 18v 20v total - tools - by owner - sale - craigslist

20V Max* Powerconnect 1.5Ah Lithium Ion Battery