How battery capacity is measured and what is Wh? (Watt Hour)

Very impressive

Wow! That was a very fast five minutes! Your video gave me more information than the last six videos I watched combined. Thanks for the great information.

Very lucidly explained, thanks!

Wow this is what I have been looking for. Only smart people know that we learn best with analogies.
Thanks.

hi, if i need to run a tesla instead of its 100KwA battery, which generator i need to use? The question is not about recharging the 100KWA battery, but about replacing the battery with a generator. In that case, what would be that generator's power? I have seen people charging Tesla with 5KW generators. So can i run that tesla, with 5KW generator as a power source?

If a device lists its Wattage is that for one hour ? Trying to determine Watt-Hours so I can be sure I have more than enough power to run a device for an 8 hour work shift. Thanks

Great video! Hoping to see more energy related videos. Power consumption measurement would be interesting. This was quality content, thanks!

I have a question I hope you could answer. There is an argument or debate going on in the tool community about fairness when comparing tools with different batteries. Specifically watt hours and cells. If one of the battery packs is 24 volts rated at 120 watt hours using standard discharge 18650 cells comparable to using an 18 volt battery pack rated at 108 watt hours using high discharge 21700 cells? Would that be a fair comparable test? Which battery pack has the advantage or would they both operate with the same power? Also someone said that a 18 volt battery pack rated at 108 watt hours with 21700 high discharge cells is actually producing twice the watt hours since it’s using high discharge cells. Is that true? Sorry to bombard you with all these questions. I’m very interested in learning the technology behind the different battery cells and the way they operate. Hopefully these are questions you could answer for me. Thank you for your time. Hope to hear from you

Can a Battery show full charge on a volt meter , and still be missing the Amps - where it won't do anything to crank over an Engine or make Light come on?? Thanks in advance.

Can you tell me if a battery that is fully charged and one that is flat have the same watt hours and if one is rated at say 274w/h on the side is at fully charged and if it was discharged to say 10% would it still be 274w/h?

Very useful content, you have earned my subscription ❤️

i know i know this but A×V=W... so it's just how many hours the battery can deliver those amps at its nominal voltage until it's "dead" so what I'm finally understanding now... is... that watts are a meaningless unit that only confuse the consumers of electricity

you're not a good teacher , or maybe the script

Hello, Thanks for the info I learned a lot from you.
If you could help me on my solar system I would appreciate.

I have 8 Panels each 350watt mono,
I have 8 batteries of 150amp gel, 3000 deep cycle, connected in series, it is 48v sysytem

STECA SOLARIX PLI 5000-48 INVERTER HYBRID INVERTER- indicated 80amp, no controller needed.
I got 160amp fuse for solar wire before it get into the invertor, One point to consider my system is not high tech like yours, I am communicating with you from far away in Africa.

I tried to explain my system so you understand what I got,
My problem, during the day time the Invertor charges the batteries and they get to 53.6¬53.8 volts, but this is where it get complicated in the evening or sun-set the invertor start beeping error (04) by saying low power from battery, then switches back to the grid=no use at the evening!
This made me mad, the setting is set to 44, if battery get law than to 44 then only Invertor to go back to the grid. Investigations I measured the batteries and each is showing 12.6 to 13.4 volts each.
Do you come across this kind of faults where the battery is full and come in the sunset no power to give, where it should hold at least few hours, but it gives up at sunset.
Please ask any diagnostic questions, if I missed any, thanks in advance
Thanks in advance Alex

nicely taught

Thank you sir

Finally someone who explains this clearly

It's amazing a standard phone battery is 10wh & a big car battery size lifepo4 battery is 10 smartphone batteries!

Thanks for a good example and expression.

When will your batteries be possible to buy?

Thanks

If you have the volt and watt value, you can work out amp.
Just use amps stored and calculate to real world results.
Watt hour was made just to further confuse people.

Title: How battery capacity is measured. Dude says "Only reliable way to know how much capacity a battery has is to measure it, but thats for another video" ?????

What an explanation. sir You nailed it.
Thanks

Thanks for nothing.
Useless video and does not do what it’s totals says.
Useless

So basically, that number lets you know how long you battery will last? Kinda like, Yeah it's a 1.5v battery but how long will this battery be able to hold 1.5v of power?

I never knew such a short video could drag for so long. Get to the point.

thank you very much!

Cheers Stephen Graham !