Parkside X12V 2Ah to 6Ah Battery Extension with Molex Balancer

Extension for Parkside X12V battery for more capacity. Just add cells in parrallel to original cells. It can hold up to 6 18650 batteries.
Also there is a place for Molex MiniFit connector (same as in PC power supply) for fast charging or balancing each cell.
I also added step files, feel free to customize and improve it. Just please - tell me about it, I want to improve my project :)

Parts needed:

• Parkside 2Ah battery
• thick cables
• 3 or 6 18650 Li-Ion cells (capable of at least 10A continous discharge current!)
• optional - Molex MiniFit 2x2 connector
• 4 wood screws for assemble