Battery weight

[Biker man]

When I first heard this I laughed ,but maybe some Einstein can tell me different, the question was does a ebike battery weigh more when charged fully.

 

[fossyant]

No it doesn't weigh more !

 

[classic33]

https://physics.stackexchange.com/q...s-of-a-battery-change-when-charged-discharged

 

[Biker man]

https://physics.stackexchange.com/q...s-of-a-battery-change-when-charged-discharged

Blimey that's blown my brain trying to make head or tail of it.🤠

 

[fossyant]

There may be teeny tiny changes in weight, but it's mainly re-aligning the chemicals/reactions and some such again.

Let's say, that 5kg battery isn't going to change to 6kg. Maybe a gram or two.

 

[Biker man]

There may be teeny tiny changes in weight, but it's mainly re-aligning the chemicals/reactions and some such again.

Let's say, that 5kg battery isn't going to change to 6kg. Maybe a gram or two.

So it is slightly heavier when fully charged.

 

[winjim]

https://physics.stackexchange.com/q...s-of-a-battery-change-when-charged-discharged

Didn't someone once work out the mass of the entire internet? It wasn't very heavy as I recall.

 

[fossyant]

So it is slightly heavier when fully charged.

Not that you'd possibly notice, and not that I can prove. It might be lighter.

Ebikes are still feckin heavy charged or not. EMTB's weigh the same as a neutron star.

 

[classic33]

There may be teeny tiny changes in weight, but it's mainly re-aligning the chemicals/reactions and some such again.

Let's say, that 5kg battery isn't going to change to 6kg. Maybe a gram or two.

There's a 0.00000000027% increase in the weight of a charged battery, compared to its uncharged state.

 

[Biker man]

Not that you'd possibly notice, and not that I can prove. It might be lighter.

Ebikes are still feckin heavy charged or not. EMTB's weigh the same as a neutron star.

My ebike seems to get heavier every week.

 

[newfhouse]

Didn't someone once work out the mass of the entire internet? It wasn't very heavy as I recall.

Much of it is very lightweight.

 

[newfhouse]

My ebike seems to get heavier every week.

Stop charging it.

 

[classic33]

Not that you'd possibly notice, and not that I can prove. It might be lighter.

Ebikes are still feckin heavy charged or not. EMTB's weigh the same as a neutron star.

They're that heavy!!
"A teaspoon of neutron star material would weigh 4 billion tons!"

https://www.nasa.gov/topics/universe/features/whitedwarf_pulsar.html

 

[Biker man]

They're that heavy!!
"A teaspoon of neutron star material would weigh 4 billion tons!"

https://www.nasa.gov/topics/universe/features/whitedwarf_pulsar.html

Think I will pass on that with my back 🤠

 

[fossyant]

They're that heavy!!
"A teaspoon of neutron star material would weigh 4 billion tons!"

https://www.nasa.gov/topics/universe/features/whitedwarf_pulsar.html

They are - I let our big machine Dan_bo pick one up last year when offered - we'd bumped into a lady in the middle of some hills in North Manchester on an e-MTB, just helped her with directions. I refused to try and pick it up with my back after our man mountain went 'oof'.