Description
This is a professional battery pack building service. You are purchasing the labor to assemble a 72V 20S8P battery pack, using BAK 45D 21700 cells or other 21700 cells you provide (or purchase from DIY500AMP.COM).
The service includes:
-
Full pack assembly
-
Spot welding with laser-cut copper/nickel busbars
-
Installation of JK 150A Smart BMS (Bluetooth-enabled)
-
Insulation & protection (Kapton tape, cell isolators, fire-retardant wrap)
-
Pre-delivery balance & test
Included in this service:
✅ Spot welding with precision pulse welder
✅ Laser-cut copper/nickel busbars
✅ JK 150A Smart BMS fully installed and configured
✅ Final balancing and testing before delivery
✅ Basic wiring & connector installation (XT90 or QS8 by default; other connectors on request)
✅ Safety packaging
Pack Specifications (based on BAK 45D cells example):
-
Voltage: 72V nominal (84V max)
-
Capacity: 36Ah (with BAK 45D 4500mAh cells)
-
Energy: ~2592Wh
-
Continuous Current: 150A limited by JK BMS
-
Peak Current: 180-200A bursts (depending on BMS settings)
-
Cycle Life: ~600-800 cycles (depends on chosen cells and usage)
Lead Time:
-
Please allow 3-4 weeks after we receive your cells to complete the build and testing.
Important Notes:
-
This is a labor-only product. Cells are not included unless you purchase them from our store.
-
JK 150A Smart BMS is included and installed as part of this service.
-
Shipping of the finished pack will be handled with proper dangerous goods packaging.
Safety Warning for Lithium-Ion Battery Usage:
(Insert your store standard disclaimer here.)