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15A 48V 720W Battery 65X Panasonic NCR18650BD 18650 Li-On Cells - $280 (Brooklyn)
part type:
other
condition:
new
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Made from 65X Original Panasonic NCR18650BD Li-On 18650 Cells
3.2A but in reality, around 3A+ because of 2.8V Cut Off Voltage.
Manufactures are using 2.5 Cut Off Voltage.
I will have 12 of these batteries 4 build so far.
Welded with pure 0.15mm Nickel strips. China batteries are using low quality
metal strips covered by nickel with higher resistance. Plus, in the while
they will get rusted, not to say about batteries quality and much lower
capacity than rated. Was using Spot welder with 2x 3000 Farad Super Capacitors
powerful enough to weld 2x 0.15 pure nickel strips to battery terminal, not one
by one but in one shot. First came Kapton tape, then duct tape, then again
kapton tape. After all was wrapped in heat shrink tube. Battery weight is only
3.32kg or 7.32Lb. Battery dimension: Long-250mm Wide-95mm Deep-65mm
Battery Cells can be identified as original by weight, capacity, and internal resistance.
Especially by internal resistance. China made batteries start with 60Milliohms and
higher, this one is 23-25Milliomhs. All info is in the pictures.
Connectors are: Charging Port is standard 2.55mm and Output is XT60 as one of the picture shows.
$280 Firm