🔋 Battery amp-hour, watt-hour and C rating tutorial
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- Опубликовано: 11 июн 2024
- A guide to battery capacity measurement including amp-hours, watt-hours, C ratings and more.
Website: www.afrotechmods.com/
The Amp Hour podcast: www.theamphour.com/ 
Наука
Interested in learning about wireless power? Subscribers can get up to 80% off my course Wireless Power to the People - Wireless Charging 101 on udemy using the coupon code "RUclips" www.udemy.com/wireless-power-to-the-people-wireless-charging-101/?couponCode=RUclips
Now I am getting my interest in this subject after becoming a doctor, hope to learn a lot in future..ty
hi, one question:
if i have 4 x 12V 280Ah C100 batteries and want to do a 24V system, is it better to hook them up into:
2 in series + 2 in series and those in paralel or
2 parallel + 2 parallel and those in series ? (To get a better C Rating? Discharging rate?)
as allways there are folks that say the first is better and other say the latter is better ...
@@Broxine It will not mater 2 in series and 2 in parallel or vice verse just wire it to 24v build it as to the easiest way to configure the connections obviously the shorter the wire is the less losses you will have.
Have a good one.
Ok
"C" specifically refers to the discharge capacity, that is the shortest time the battery can be safely completely discharged in quantified in fractions of one hour. Time is measured on a sexagecimal system, in units of 60, so it can be evenly divided 1, 2, 3, 4, 5, or 6 ways evenly. So a 20C battery can be discharged in 3 minutes, where a 30C battery can be discharged in 2 minutes, 60C in a minute flat. That way you can multiply to get the total amperage, a 5Ah, 20C cell can discharge in 3 minutes @ 100A, where a 5Ah 30C can discharge @ 150A in 2 minutes.
Thanks for the specific clarification. This should be pinned to the top of the comments.
Hence, you could say that the unit for C ratings is [1/h]
I believe c rating also has an impact on charging time that is perhaps more significant to most users to understand.
sexidecimal... my favorite math system. XD
@@error53ish I am so happy it wasn't just mewho thought of that
This is what I love about youtube.. It teaches me more then all of my years in school.. :D
FOR FREE TOO
AND PPL COMPALIN ABOUR THEUR SHITTY MANAGEMENT
@Thomas Chrombly well said
@@tobieeck9676 Or perhaps, somebody has explained something in a way he can understand rather than in a way he can't.
When I was at school (long time ago), certain teachers (yes Mr Baxter the maths teacher I'm thinking about you) only had one way and one speed when it came to explaining things.
In RUclips you can find any number of explanations on virtually anything.
@@mick2d2 Same here- FOUR algebra teachers FAILED me and one gave me a well deserved "A"!
Great tutorial!
What you doing here? Xd I loved your videos! Have a nice day
Oh did you learn it from here? I am actually building a speaker with your videos rn.
When's your next cool project? :D Looking forward
wow!
R u here ?u r my favorite ♥️ youtuber
When a 6 minute video from 5 years ago explains batteries better than my school did this entire year
The way you explain this tedious topic is simply crystal clear and straight forward . Thank you I finally learned it right!
Great vid, as always. Thanks for the mention!
Yay thank you!
Afrotechmods do you know any other sources for one to llearn electronics?
Moses A
Check out the recommended channels on my channel page
EEVblog
Mo Overall Fitness Hacks
I've been waiting for a long time to hear these terms and processes explained to me. Thanks!
took RUclips forever but it finally recommended me something useful, this is probably the best explaination of Ah, A, Wh and C I've ever come across. Definitely looking at batteries in a much more reasonable way now.
The best video about batteries and their units i've seen so far. Congratulations!
Thank you very much!! A tutorial well explained like no other. Now I know what others couldn’t explain .
its been more than a week trying to understand these three topics. well you just explained everything in 0.1 h
I was looking at power packs and powerstation, and seeing they had nearly identical or only marginally different mah ratings (which is what I thought was their capacity) even though they were immensely different sizes and hundreds of dollars different in price, I was very confused and this video has been extremely helpful
You've cleared my confusions...thanks.
Thank you so much for explaining it so nicely. You’ve answered quite a few things I’ve had on my mind.
This could be the best explanation/tutorial I've seen in ages. Another thing, that AA with 2Ah capacity could've been very expensive back in 2014. I barely see rechargeable AAs these days as 18650 is by far, has become the standard size for battery-powered tools.
I used to watch you videos back then, man I learn a lot here
Wow! This video is very well done and clarified a lot. Thank you!!
Great video! I always wondered if a machine would only take a number of amps it needed, or if you had too many amps if it would fail. now I know thanks to you!
A Masterpiece as always....!
Ah has been a mystery for me for years untill now..
I'm so glad to see your videos popping back up on my feed again. You're always clear, concise, and fun with your explanations. Keep up the stellar work!
I was literally just researching this. Thank you so much!
this is great. nobody talks about how ampere and amp hours are different, and i was confused for long time until got it by myself.
I don't usually comment on these types of videos but this was sooo helpful thank you. We were given an assignment with this in it but it wasn't covered in any lectures.
Took electronics in high school now years later been playing with solar and a multimeter. Great content for a refresher!
Short, clear and informative. That was very good.
Totally not an electrical engineer or electrician but stumbled across this and it was very clear! thanks man
u really rocked it bro.....it is very easy to understand by way u teach...
well taught. appreciate the illustrations. will make me into a smarter and more capable shopper for sure.
I didn't even listen to it. I read your captions and everything made sense. Nice!
Very well produced video and accurate information. Bravo!
Excellent video. Difficult topic explained in clear and in understandable terms.
Thanks for making this very clear for dummies like me to learn!
Well done tutorial on battery basics. Many are clueless.
thank you , I've got a circuits midterm in 6 hours and this helped!
Magnificent and easy to understand.
Thank you.
Thanks for the video. Immediately clarify the areas I could not understand.
Just learned more in 6 minutes than in 3 years of high school Electronics class. Subbed.
awesome video. Good job!
I enjoyed every detail explained at an engineer level.
Great video! Thanks for clarifying that the units do not actually work out when dealing with C ratings.
Amazing video, exactly what I was looking for.
what a nice explanation. .
this is what i was looking for..
Excellent tutorial. Same as battery advertised in Wh / V = Ah
Best explanation I ever had, really good please keep up good work for us "slow learners"
Thanks for this great video, it has helped me to disperse some of my questions.
Brilliant video as usual, my brain loved it. So did I.
Brilliant video as usual, my brain loved it. So did I.
Brilliant video as usual, my brain loved it. So did I.
TheRogerx3 Brilliant usual as video, my love brained it
So I did.
Brilliant video as usual, my brain loved it. So did I.
Brilliant video as usual, my brain loved it. So did I.
Thanks, your videos are so informative! Keep it up!
Great explanation to calculate battery life and understand C ratings!
Good voice, clearly speech and very good videos.
Simple and clear explanation. Thanks!
great demonstration. i think im startin to get it now..
Great video and it was really helpful. Thanks
Thank you!
you answered a lot of my questions
thanks about the explanation, Finally I know about C rate and relation to Amper Hours. The video have helped me understand my problem
Great video!! Amp hours had me buggin'..lol. The last type battery you showed, we use those type in drone racing/freestyle and they're used in many RC hobbies. With high performance drones, the c rating is very important to us, the higher the better performance, unfortunately the cost goes up too. With an average race/freestyle drone you can hit speeds up to 70mph+ but there is also a lot of sharp turns, flips and all around changes of directions in seconds, which means the throttle stick is constantly moving.
Each of the 4 motors can pull appx 15-20amps, and the speed controller chips that operate them are rated at about 40amps for buffer from bursts. So imagine the energy draw on the battery, from 0 to max and back down again, 30 times or so during a flight. What happens to us when battery starts to get low, at the end of a flight, we notice what we call voltage sag, looking at it on a flight data chart, you'll see throttle input increase, and as the quad starts to gain momentum, the battery can't handle it, and the voltage sags, just for a second or so, but in racing that's an eternity..lol. So the higher c rating of a battery, you get lower resistance and way less voltage sag near the tail end of your flight, sometimes when you need it most trying to race to the finish line.
nicely done the explanation.
GREAT!.. NOW I UNDERSTAND CLEARLY ABOUT BATTERY CAPACITY IN HRS, WHRS AND C RATINGS
THANKS BRO
Very clarifying video, thank you very much!
Amazing explanation! Thanks for sharing! :) Now everything is clear.
We need more videos on batteries like this!
This taught me more that my school ever can. Im defnitely wathing your vids and subbing. Dont know if you already make videos on normal electronics and electric topics in physics for school, if not you should cause you'd make a great teacher :P
great explanation now I understand how this works and what's the difference in between
Thats very informative.Thankyou for posting in a very "understandable" way.
I'm so glad you're making videos again.
I have a question.
Why do rechargeable batteries have mAh ratings on them but non-rechargeable ones do not? Aren't regular chemical batteries also able to deliver a set amount of current in amp hours?
I'm not sure why they do this but it annoys me too. You can usually find the capacity of alkalines etc. by looking up their datasheet.
Very useful information. Thank You.
Thank you so much... I need this tutorial like yesterday 😅
I Learned so much from you, thanks for that! Things i Never thought i could grasp, now become clear to my aging Brain. Greetings from Germany !
Who r this assholes who put dislikes
Thanks for the video!
So great 😍👏
I was looking for this information.
Thanks for the excellent tutorial it really saves time
Very well explained
I like to think of the C rating as implicitly in units of per-hour (1/hour or hour^-1), so that a 2C rating means you could (in theory) discharge such a battery twice in one hour (or once in half an hour). This way, you have a calculation such as 2.2 Ah x 20/hour, and the hours obviously cancel out, leaving a measure of current.
A similar nuisance occurs with electrical power utilities and their kWh measurements - you end up sometimes thinking about kWh/hour, which always strikes me as bizarre, even though it just means kW. Great videos, BTW. :)
Highly appreciated, far better than my professors.
Amazing explanation thank you
Really easy to understand vid. Cheers
Great tutorial as always.
Hello, thanks for this awesome learning material. This is really helpful for query regarding Amph
Your videos are awesome. Could you please make a video explaining what it means for a electrical component to draw too much current?
This is great. Thank you.
Awesome explanation
Perfect! Clear and to the point.
A great tutorial for a beginner. I like the way of explain and I'm gonna like and also subscribe to your channel.
That certainly cleared up a few things, I've been curious as to what the amp hours thingy on batteries actually meant. Had to watch some of this a few times before I got it.
What parts were unclear? (just looking for feedback)
Afrotechmods
That's just me, on pretty much any video that's about something I'm not familiar with, sometimes I have to replay something several times before I understand it.
Afrotechmods
I thought your video was very clear, but then I am studying electrical engineering.
Afrotechmods
it's clear. Us dummies just can't absorb and retain new concepts on the first pass a lot of the time :)
Afrotechmods you were very clear on this video. However, I too had to watch more than once since this is all new to me. At least you get more views from us newbies!! Lol.
Awesome explaining
Excellent as always.
Very, very good post thank you. The internal impedance has really changed my thoughts on a battery bank. A subtle but important note, thank you!
Very nice explenation. Thanks for Your videos.
Very nice explained
Very nice and effective video presentation.😊😊😊😊😊❤❤🎉🎉Thank you.
It was a very good explanation. Thank you.
I though it can only supply 1.2 volts why did it supply around 1.4V with 400mAh? 2:51
Excellent information
We need more videos like this
I will have to watch it a couple more times. My head is spinning. Good instruction. If I were smarter I could say you made it easier to understand
Very well explained 👍🏻😊
Nicely done, Professor. :)
thank you for this fantastic video!
Can you do a video about how you acquired your knowledge (education, career, etc)? I'm taking electrician classes right now so I'm curious. Also, your videos are awesome.
Excellent video - thank you
thanks Great Video.
keep them coming
Great explanation! A lot of people today are so confused with (Ah) and (A). These are the things the people need to know when buying power banks, vape batteries etc.
Very educational video. Thank you.