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3.75V 5000mah 18.75WH CELLS W/ BMS
3.75V 5000mah 18.75WH CELLS W/ BMS
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3.75V 5000mah 18.75WH CELLS W/ BMS

Regular price $1.35 $0.00 Unit price per

WHO NEEDS CELL LEVEL FUSING WHEN EVERY CELL HAS A BMS AND A TEMPERATURE SENSOR?

THESE ARE GREAT LITTLE PACKS, PERFECT FOR DIY PROJECTS. WE TESTED OVER 100 OF THESE AND THEY TESTED AROUND 95% ON AVERAGE. THIS IS A PERFECT EXAMPLE OF HOW TECHNOLOGY MOVES FASTER THAN THE BATTERIES DEGRADE. THESE CAME OUT OF UNITS THAT WERE "UPGRADED" OR OVERSTOCK AND ONLY IN SERVICE FOR A FEW MONTHS. SO THESE BATTERIES PROBABLY ONLY SAW A CYCLE OR TWO. THEY ONLY CYCLE WHEN A HOME LOSES POWER WHICH IS VERY RARE. 

WE TESTED THESE PACKS AT 2A CONTINUOUS FOR A FULL DISCHARGE SO YOU CAN CERTAINLY DISCHARGE AT A .4C RATE.

THE RED WIRES ARE CONNECTED TO THE SAME POSITIVE BMS TERMINAL AND THE TWO BLACK WIRES ARE ALSO CONNECTED TO THE SAME NEGATIVE TERMINAL ON THE BMS. THE WHITE WIRE DOES NOTHING FOR US. EASILY BUILD A BATTERY PACK BY SOLDERING OR USING SPLICE CONNECTORS. CHARGE UP EACH BATTERY, CONNECT THEM IN SERIES OR EVEN PARALLEL THEM BY SOLDERING THEM TO A COPPER FLAT BAR. THIS WILL MAKE A VERY LONG LASTING, ENERGY DENSE BATTERY PACK WITH SUPER SAFETY FEATURES BUILT IN. NO WASTED DIAMOND SPACE LIKE YOU GET WITH CYLINDRICAL CELLS.

YOU CAN USE THE RED AND BLACK WIRES FOR YOUR CONNECTIONS. THE YELLOW WIRE DOESN'T DO ANYTHING FOR OUR NEEDS. THE CONNECTOR WE DON'T KNOW WHAT THAT IS SO YOU SHOULD JUST UTILIZE THE WIRES, THERE IS ENOUGH WIRE TO WORK WITH AND YOU CAN ADD YOUR OWN CONNECTOR OR CRIMP WIRES TOGETHER. MY RECOMMENDATION IS TO CUT ONE WIRE AT A TIME NEAR THE CONNECTOR. TRIM THE YELLOW WIRE ALL THE WAY DOWN SINCE YOU DON'T NEED IT. EXPOSE AROUND A QUARTER INCH OF THE WIRE ON THE BLACK AND RED WIRES. THAT IS YOUR MAIN POSITIVE AND NEGATIVE. OR SIMPLY HOLD THE WIRES TIGHT NEAR THE CONNECTOR THEN PULL THE CONNECTOR OFF WITH FORCE. USE A FLAT NEEDLE NOSE PLIERS WITH SOME ELECTRICAL TAPE ON IT TO PREVENT A SHORT THEN PULL OFF THE CONNECTOR WITH A PAIR OF PLIERS. IT IS VERY EASY TO DO WHEN YOU GET THE HANG OF IT. USE SOME B-WIRE CONNECTORS TO MAKE SERIES CONNECTIONS OR TO PARALLEL WIRE THEM GRAB SOME COPPER PIPE, HAMMER IT FLAT, SOLDER YOUR CONNECTIONS TO THAT.

IF YOU BUILD A PACK WITH THESE YOU WILL QUICKLY DISCOVER WHAT A GREAT VALUE THIS IS. IF YOU HAVE ANY CELLS THAT DON'T READ VOLTAGE AT THE CONNECTOR JUST APPLY 4V TO WAKE THEM UP. SOME BATTERIES WILL BE RESTING AT 2.8V WHICH IS WHERE THE DISCHARGE CUTOFF IS SET ON THE BMS. 


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