Virtual Boy MrBATTPACK Battery Pack

Note: This is a preorder.  You will also need to purchase two of your own 18350 flat top lithium cells.
 
This is the MrFlower MrBATTPACK USB-C rechargeable VB battery pack design with USB-C charge port, LED indicator, and high quality 3D printed carbon fiber housing. Designed to be used with your own two 18350 lithium rechargeable flat top cells.  You can also charge via USB-C while playing for extended play.  Tested and verified with the Virtual Boy MrCART flash cart.  This is another fantastic MrFlower product!
 
Features overview:
Run time of 4 hours with 18350 lithium rechargeable flat top cells (2x 1200mAh cells)
USB-C connector for charging
High quality 3D printed carbon fiber housing
Charge while playing (increases charging time)
Charge time of ~3.5 hours when used with a 2A charger
Months of standby time
Fully tested and compatible with MrCART flash cart
RED LED indicates charging
BLUE LED indicates full charge
Weight (including cells): 78 grams
Dimensions:  ~67.5mm (height) x ~55.2mm (width) x  ~24.3mm (deep)