rangewalker
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Post by rangewalker on Mar 30, 2020 17:44:24 GMT -8
A question for the tech-heads with battery pack experience and testing. I am working on a final load out list for this spring summer. I have replaced most of my AA and AA battery devices.
When do you list the weight of your 10000mAh battery packs, before or after fully charging?
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gabby
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Post by gabby on Mar 30, 2020 18:11:49 GMT -8
When do list the weight of your 10000mAh battery packs, before or after fully charging? After. You need to get every microgram in order to be accurate!! |
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rebeccad
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Post by rebeccad on Mar 30, 2020 18:39:50 GMT -8
0
: O
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rebeccad
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Post by rebeccad on Mar 30, 2020 18:41:12 GMT -8
Just goofing off. Trying to express my bemusement at this one :D
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texasbb
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Post by texasbb on Mar 30, 2020 18:53:00 GMT -8
Weigh it either way, then calculate the other: m2 = m1 + (e2-e1)/(c^2)  |
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Post by High Sierra Fan on Mar 30, 2020 19:05:53 GMT -8
Base weight= empty
Trail weight = full.
Just like for water.
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rebeccad
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Post by rebeccad on Mar 31, 2020 7:55:38 GMT -8
The weight of a charged battery and a discharged battery and the number of electrons gathered is not going to be all that relevant to the total, overall, pack weight. I’m going to go out on a limb and guess that everyone here knows that. If I am wrong, please do not burst my happy bubble :D |
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Post by Lamebeaver on Mar 31, 2020 8:00:09 GMT -8
It depends,
Is the battery pack NiMH or Li-ion?
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reuben
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Post by reuben on Mar 31, 2020 8:12:40 GMT -8
When do list the weight of your 10000mAh battery packs, before or after fully charging? Only when I put them in my pack. When they're in your pack, neither my base weight nor my loaded weight are affected, charged or uncharged. |
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reuben
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Post by reuben on Mar 31, 2020 8:52:20 GMT -8
Yes indeed, that would make a difference in electron concentration. You'd have to be a real gram weenie to worry about the mass of a few million electrons. Given their orbital diameter, I'm much more worried about the volume they take up in my pack rather than the mass they add. |
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gabby
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Post by gabby on Mar 31, 2020 8:57:16 GMT -8
Only when I put them in my pack. When they're in your pack, neither my base weight nor my loaded weight are affected, charged or uncharged. Obviously, you're not weighing carefully enough! |
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reuben
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Post by reuben on Mar 31, 2020 9:46:47 GMT -8
I've yet to read of anyone taking isotopic spin into account. Not even on BPL.
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gabby
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Post by gabby on Mar 31, 2020 14:07:44 GMT -8
I'm really enjoying this wacky thread now!
I actually went out and checked before I posted that first response to the OP, 'cause, hell, I didn't know.
But when I read that a Chevy Volt battery pack would increase in weight by a half microgram when charged, I figured this old ranger had hit on something important!
... or maybe I've just been playing "Death Stranding" too long ...
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Post by cheaptentguy on Mar 31, 2020 15:22:24 GMT -8
Just be careful using quantum folders. If you don't know what you're doing, you can easily end up with a piece of gear in some unknown random place in the universe. It's amazing how often I lose lighters that way.
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toejam
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Post by toejam on Apr 1, 2020 4:53:18 GMT -8
one can estimate the total number of electrons Electrons, like other leptons, have no intrinsic mass but may obtain effective mass through interaction with the Higgs field. So charged or discharged, a battery has the same mass. One is just more energetic than the other. You probably already knew that. |
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