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Lubo Baran's profile photoMichael Beck's profile photoPeter Bailey's profile photo
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I was wondering this myself. Thanks for the answer!
 
They show the battery pack in this image. I wonder how heavy it is
 
that size? I'd guess the weight of small phone battery, 40-50 grams?
 
Yeh I guess you're right. Probably smaller since there's no screen to power.
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