cross-posted from: https://lemmy.ca/post/41765246

Well this is interesting. Stick-a-node to any smartphone with magnetic back. I could see myself trying this.

  • Avid Amoeba@lemmy.caOP
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    10 days ago

    Most battery banks advertise their raw cell Ah/mAh ratings, which of course isn’t the effective Ah at 5V. It seems like Heltec tried listing both ratings here.

    • MangoPenguin
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      10 days ago

      Yeah it seems like it. Cell capacity is fine in mAh but output energy should always be Wh