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Nomad Pak MKII Is the replacement for the original Nomad AA or Rechargeable Battery Pack. Manufactured new in the US.

This battery pack uses a custom charge controller chip to enable USB charging. This update also includes a charging status LED that shows when the pack is charging and when it is fully charged (Red LED for charging and Green LED for fully charged.)

LED Codes:
Solid Red: Charging
Solid Green: Fully Charged
Red Flashing 1x per second: Over Voltage on PSU or Battery Temp Warning
Red Flashing 4x per second: No Battery Detected (Make sure to use button tabbed cells)

The Lithium Cells are not included with this pack you will need to source them. They need to have a tab and on cell protection is highly recommended.

18650 cells will max out at 3800mAh if you find one that says anything higher than that number it is fake and will not come close to that amount of storage. Expect to pay around $10-$22usd per battery for 3500mAh cells if they are less than $8 they are also likely to be fake.