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Rebuild a Black & Decker 40V 1.5Ah

Updated on 08/12/2025
power-toolrebuildblack-decker

Rebuilding a Black & Decker 40V 1.5Ah garden tool battery.


B&D 40V 1.5Ah ready to be rebuilt

Disassembling the battery.


B&D case and BMS

Replacing the old LGAAHB71865 with new N18650CQP 3000mAh and 20A maximum discharge rate.


Replacing LGAAHB71865 with N18650CQP

The whole process was fairly quick and the final cost was around $50.


Fast, cheap rebuild for black & decker 40v 1.5Ah