This rotary hammer drill is working fine, but the battery cannot be recharged. I need to rebuild these batteries The original battery is built with 20 cells of NiMH, fully charged voltage is 24V. The lithium battery 18650 cell fully charged is 4.2V, to get 25.2v we need 6 cells in series (4.2V x 6 = 25.2V). The battery after rebuild is 24V 6.8Ah while the original 24V 1.2Ah
-----------------------------------------------
HiMH 20cells x 1.2V = 24V
Li-lion 6cells x 4.2V = 25.2V
-----------------------------------------------
* Battery rebuild kit in this video
12 cells of lithium 18650 3.7V 3400 mAh
1 BMS 6S30A, it can provide power 24V x 30A = 720W
1 25.2V Li-ion charger
1 Dc female power jack
Battery washers
Battery nickel plated
*Note
In the video I'm error in counting 20 NiMH with 21.

I hope you find something useful & enjoy this video!
I am happy to receive your feedback, advice, suggestions to improve myself.
!!! I apologize for the mistake if I have made in this restoration !!!
***I still keep some parts, I want to save the world's environment***
Thank you so much for Likes & Comments

свернуть