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DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS
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DISCHARGED - 12V LIFEPO4 A123 MODULE W/ BMS

Regular price $29.99 $0.00 Unit price per

THESE PACKS IN PARTICULAR WE TESTED THE VOLTAGE AT THE CONNECTOR AND THE BMS CUT OFF VOLTAGE. IT IS POSSIBLE THE CELLS ARE OUT OF BALANCE, SITTING AT 2.7V, OR SITTING AT 0V. WE ARE SELLING THESE CHEAP AS BALLS JUST FOR THE VALUE OF THE BMS.

MANY CUSTOMERS HAVE SUCCESS CYCLING THESE AND WAKING UP THE CELLS BUT RESULTS ARE NOT GUARANTEED. FOR $29.99 YOU GET A PROFESSIONAL, MEDICAL GRADE 40A 4S LIFEPO4 BMS WHICH IS WORTH THE $29.99 ALONE, PLUS YOU GET 64 A123 CELLS YOU CAN TRY TO WAKE UP, AND AN ANDERSON SB50A CONNECTOR. IF YOU CAN SALVAGE ANY OF THE CELLS THIS WILL BE AN AMAZING DEAL.

MEDICAL GRADE BMS, FOR THOSE WHO ARE UNAWARE, MEANS THE MATERIALS USED ARE VERY PURE AND THE MAIN CONNECTIONS ON THE PCB THAT CARRY CURRENT ARE GOLD PLATED.  YOU CAN SEE THAT IN THE 6TH AND 7TH PHOTOS. MEDICAL APPLICATIONS REQUIRE HIGHER STANDARDS AND GOLD PLATING IS OFTEN REQUIRED FOR CORROSION RESISTIVE PROPERTIES. IF YOU HAVE A MEDICAL BATTERY CHANCES ARE THE BMS IS TOP OF THE LINE AND THE MANUFACTURER OF THE BMS HAS TO FOLLOW VERY STRICT GUIDELINES WITHOUT CUTTING CORNERS TO SAVE ON COST BY USING CHEAPER MATERIALS. 

THESE BATTERIES ARE USED IN MEDICAL CARTS AND SWAPPED OUT TYPICALLY WHEN THEY REACH 80% OF THEIR ORIGINAL CAPACITY. THESE IN PARTICULAR WERE ONLY TESTED FOR VOLTAGE AT THE CONNECTOR AND THERE WAS NONE. 

THE BMS DOES BALANCE AND IT IS MEDICAL GRADE WHICH MEANS THIS IS TOP OF THE LINE. THE WIRES COMING OUT ARE 10 GAUGE WIRES AND IT HAS AN ANDERSON SB50A CONNECTOR SO I WOULD LIMIT THE AMP DRAW TO 50 AMPS JUST BECAUSE THAT IS WHAT THE 10 GAUGE WIRE AND CONNECTOR IS RATED FOR. THE BMS SAYS MODEL VC4145SB. I THINK IT STANDS FOR 4 IN SERIES AND 45 AMP CURRENT BUT LOOKING AT THE BUILD THIS APPEARS TO BE A 40A CONTINUOUS BMS.

THE THICK, CLEAR, PLASTIC ENCLOSURE MAY BE DIRTY, HAVE SCRATCHES, OR MAY NOT BE INCLUDED AT ALL. WE ONLY GET A PALLET OF THESE A FEW TIMES PER YEAR AND THEY SELL VERY FAST SO GET THEM WHILE THEY LAST. 

DIMENSIONS ARE 9.5" X 5" X 5.5". THE POWER CONNECTOR STICKS OUT AROUND 10" FROM THE PACK.

THE CELLS USED ARE 26650 A123 M1A CELLS. THE CELL DATASHEET IS THE 8TH PHOTO. THESE ARE THE OLDER VERSION CELLS FROM A123, THE NEWER ONES ARE THE M1B CELLS. THESE M1A ARE GREAT CELLS BUT USUALLY THEY ARE DEGRADED MORE BECAUSE OF THE AGE. THESE IN PARTICULAR ARE DISCHARGED SO THE DEGRADATION MAY BE A LITTLE MORE. 


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