18650, 21700 or 26650 Batteries Holder - 12 pieces (3S4P or 4S3P)

This one was designed to replace an ordinary 7A Pb battery in a PC UPC. 

Now:

• it holds much higher discharge current;
• has at least twice bigger capacity;
• you may charge these LiFePo4 setup with 15A current instead of Pb 0.7A;
• has less weight;
• Has additional BMS supplied protections.

Before printing the whole holder try a test one and adjust scale accordingly to get a tight battery grip. 

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