YoshiMoshi3
Well-known member
- Joined
- Nov 2, 2022
- Messages
- 495
I'm curious to see if anyone has DIY a universal battery pack before? I know that there are adapters and such, but they take some power away.
Each power tool brand has there own unique BMS, Connector to make the battery to tool connection, and battery box dimensions and screw hole pattern to fasten the two halves of the boxes together.. The screw holes to keep the BMS down also have their own unique screw patterns onto the top row of the plastic cell holder. Additionally the place for wires or nickel strips to be connected to the BMS also have their own unique spots from one BMS to another depending on power tool brand. So we have limited options here. With the only common thing being the cells apparently.
This got me thinking that really the only way to make a universal power tool battery pack would be to simply have the cells be modular in nature and buy the plastic box shells for each brand. Cut the plastic cell holder, the top row in half. Screw the BMS down, to the top half. Have appropriate gauged wires going to the BMS and connectorize them. One end of the wire is hardwired to the cell pack and the other end a connector. A wire hardwired to the BMS, and on the other a connector.
This would allow me to simply open up the battery pack shell say, Milwaukee for example, undo the connectors, and remove the stack of cells. Put them in any plastic box I want, Makita for example, and reconnect things.
Bad idea?
Each power tool brand has there own unique BMS, Connector to make the battery to tool connection, and battery box dimensions and screw hole pattern to fasten the two halves of the boxes together.. The screw holes to keep the BMS down also have their own unique screw patterns onto the top row of the plastic cell holder. Additionally the place for wires or nickel strips to be connected to the BMS also have their own unique spots from one BMS to another depending on power tool brand. So we have limited options here. With the only common thing being the cells apparently.
This got me thinking that really the only way to make a universal power tool battery pack would be to simply have the cells be modular in nature and buy the plastic box shells for each brand. Cut the plastic cell holder, the top row in half. Screw the BMS down, to the top half. Have appropriate gauged wires going to the BMS and connectorize them. One end of the wire is hardwired to the cell pack and the other end a connector. A wire hardwired to the BMS, and on the other a connector.
This would allow me to simply open up the battery pack shell say, Milwaukee for example, undo the connectors, and remove the stack of cells. Put them in any plastic box I want, Makita for example, and reconnect things.
Bad idea?