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We tested many different 300a BMS units and this one in particular we believe is the greatest value and excellent quality
ideal for custom energy storage solutions
0 terminals 
or two in series create a 48V system that works well with most 48V inverters
You can also parallel them
RC3563 Lithium Battery Internal Resistance Tester with 4-wire Probes Toshiba We tested many different 300aThese 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
