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and ending with the red wire which goes to the main positive
It will be a hair larger than that
0 terminals 
We also have a BMS that works for 6-21s lithium ion and the wiring diagrams are shown in the last 3 photos
RC3563 Lithium Battery Internal Resistance Tester with 4-wire Probes Toshiba and ending with the redThese are brand new in the box. Excellent quality and value. Accurately test internal resistance of your batteries with voltage range of 0 100v. We include the 4 wire probes because they can be used for any type of battery. Pouch, cylindrical, and prismatic style. Specifications: Speed: 5 times second Adjustment: Correction for resistance and voltage separately Basic accuracy: Resistance: 0. 5% Voltage: 0. 5% Measuring ranges: Resistance: 0. 0001m~200
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