Build DC9096 Lithium Battery for Dewalt 18V Nickel Electric Tools

I'm looking for kind of this battery case for long time, finally I found it. It is available at china store. It can hold 10 18650 lithium-ion power batteries.
The assembly process is in this video.
Very important:
Before soldering the PCB, make sure each battery has the same voltage.
Can replace the following batteries:
DC9096 DE9039 DE9095 DE9096 DE9098 DE9503 DW9095 DW9096 DW9098 DE9098
Applicable tool models:
DC020 DC212 DC212B DC212KA DC212KB DC212KZ DC212N DC213KB
DC330 DC330K DC330KA DC330KB DC330N DC380KA DC380KB
DC380N DC385 DC385B DC385K DC390 DC390B DC390K DC390KA
DC390KB DC390N DC410 DC410KA DC410KB DC410N DC411B
DC411KA DC411KL DC490B DC490KA DC495B DC495KA
DC515B DC515K DC515N DC520KA DC527 (flash) DC527 (flash)
DC530KA DC545K DC546K DC550 DC550B DC550KA DC608B DC608K
DC616K DC618 DC618K DC618KA DC628K DC668KA DC720KA DC721KA
DC721KB DC725KA DC725KB DC729KA DC759 DC759KA DC759KB
DC820B DC820KA DC820KB DC821KA DC823B DC823KA DC825B
DC825KA DC825KB DC920KA DC925 DC925KA DC925KB DC925VA
DC926KA DC926VA DC987 DC987KA DC987KB DC988 DC988KA
DC988KB DC988VA DC989KA DC989VA DC998KB DCD690KL DCD760B
DCD775B DCD920B2 DCD925 DCD925B2 DCD940KX DCD950B
DCD950KX DCD950VX DCD959KX DCD959VX DCD970KL DCD980L2
DCD985B DCD985L2 DCF059KL DCF826KL DCG411KL DCS331B
DCS331L1 DCS331L2 DCS331N DW056 DW056K DW056K-2 DW056KS
DW056N DW057K DW057K-2 DW057N DW059 DW059B DW059K-2
DW908 (flash) DW919 (flash) DW932 DW933 DW933K
DW934 DW934K-2 DW934K2 DW934K2H DW936 DW936K DW938
DW938K DW959K-2 DW960 DW960B DW960K DW960K-2 DW987
DW987KQ DW988 DW988KQ DW989 DW995 DW997 DW997K-2
DW999 DW999K DW999K-2 DW999K2 DW999K2H DW999KQ

I hope you find this video useful and enjoy it!
Furthermore, I am happy to receive feedback, suggestions to improve myself.
Thank you very much for choosing to watch my video!
Have a nice day
Gear Show