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Help with a DIY version of the goalzero sherpa 100ac power bank
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Hi Everyone,

I wanted to try to make a DIY version of the Goalzero Sherpa 100AC Power Bank. I was hoping I can get some guidance on building it as I never build one of these before.
I'm looking for suggestions on what type of battery configuration I should use (maybe 4S) and parts that you might know that I could use to build this such as very small power inverter. I'm thinking of using ESP8266 to drive the LCD and 3D printing a case. 

Thanks

Yoshi

https://www.goalzero.com/shop/sherpa-pow...ower-bank/
https://www.goalzero.com/media/files/she...2-7dca.pdf


[*]Weight: 2.0 lbs
[*]Dimensions: 7.5 x 1.0 x 5.68 in (19.0 x 2.54 x 14.4 cm)

[*]Pack Capacity: 94.7Wh (14.8V, 6400mAh)
[*]Single Cell Equivalent Capacity: 25600mAh @ 3.7V

  • Wireless Qi (output): 5W max
  • USB-A: 5V, up to 2.4A (12W max), regulated
  • USB-C PD ports (input/output): 5V, 9V, 12V, 15V, 20V up to 3A (60W max), regulated
  • AC inverter (output): 110V, up to 0.9A (100W max), 60Hz, modified sine wave
  • Charging port (input, 8mm): 14-22V (50W max)
[*]
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Help with a DIY version of the goalzero sherpa 100ac power bank - by yoshi - 11-18-2019, 04:06 AM

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