Building 18650 Battery Packs

In this video I show the process I use to figure out how to build my battery packs for the harvested 18650 Li-Ion cells.

Here are some of the details I cover in the video:

  • Redo the cell pack in my Portable PowerPack
    • Currently configured in a 80P 3S (240 Cells)
    • Review Old Cell Layout
      • 12.6 Volts Max
      • 11.1 Volts Nominal
      • 9 Volts Dead
      • 2.0 kWh
    • Problems with this when running a 12v inverter.
      • New Cell Pack 80P 4S (320 Cell)
      • Review New Cell Layout
        • 16.8 Volts Max
        • 14.8 Volts Nominal
        • 12 Volts Dead
        • 2.6 kWh
    • KRIËGER KR1500 1500 Watt 12V Dual Power Inverter
      • Input Voltage Range 10 – 15.5 VDC
      • Will require 80 more cells
  • Small Pack
    • 3P 3S (11.1 Volts – 6,600 mAh = 6.6 Ah = .0733 kWh)
  • Medium Pack
    • 3P 4S (14.8 Volts – 6,600 mAh = 6.6 Ah = .0977 kWh)
  • Large Pack
    • 8P 4S (14.8 Volts – 17,600 mAh = 17.6 Ah = .26 kWh)
  • New PowerPack Cells
    • 80P 4S (14.8 Volts – 176,000 mAh = 176 Ah = 2.6 kWh)

Using Pack Builder:
http://www.diypowerwalls.com/repacker.php
http://repackr.com

  • What you will need:
    • Know what the cell configuration you want to build
    • Know the mAh of each cell that that you be using.
    • Enter all the mAh comma delimited and it will give you your cell configuration.
  • I Build out a 5P 4S pack. (14.8 Volts – 11,000 mAh = 11 Ah = .16 kWh)
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