What is mAh? (Battery Capacity) - Electronics Basics 18 

Thank you for explaining this in such a way that it cannot be misunderstood. Simple, and to the point without a bunch bs that takes away from the lesson.

This is an excellent tutorial of often misunderstood concepts regarding batteries , their capacity and products of their series and parallel connections.

Thank you for this explanation, I never took into account depletion in the past and wondered why my appliance wasn’t last as long. Now I know 👍 Stay well Ash from Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿

A good explanation, just add a little thing, once the voltage is more than 3 volts and no regulator of voltage lamps will use more than 60 mAh and the calculation will change, there are a few other ingredients but the explanation is good for beginners

Fantastic videos! Keep up the good work. This is a great series. I really like your approach of mixing the circuit emulator with the physical world. This episode on batteries was really good. I especially enjoyed the fact that you spoke about all the different ways to look at the voltage (ie nominal, stated)

Very well explained!! I would like to add/ask something, at least as far as Lithium Polymer (Lipo) high performance batteries go. These type are widely used in racing/freestyle drones that I fly. We call them "packs" because as I'm sure you know, they do not have hard shell, just individual 3.7v (nominal) cells, in series wrapped together in plastic and then then shrink wrapped with logo and manufacturer info. I'm not sure if it's due to nature of high performance or just the way our hobby has always done it, but if any individual cell drops below 3.0v it's taken out of service by most pilots. Now some, myself included, after running a few tests and it still seems to be holding a charge and the cells are relatively balanced within 0.5v of each other, I'll wrap a piece of colored tape, (blue for me) around it and still use for accessory equipment, but not as a flight battery. Have you heard of this practice in other fields that use Lipo batteries, or is our hobby just overly careful?

I am by no means a person of hyperintelligence, but this guy makes it so easy to understand what I used to believe was in the same realm of Learning or Cantonese(ya kno, fuggin impossible😅)

Wait a second, lemmi start the video over. XD

Thanking a lot for sharing your knowledge. :)

Excellent video. The way you explain voltage and mah relationship in regards to parallel and series is absolutely excellent.

Great video! I'm trying to power a 5V sensor with a 3.7v booster/charger pcb. What's the minimum mAh battery you think I should use? I have a 120maH lipo on it now and the board seems to dwindle and looses power 😞. Thanks for your time!

Complimenti,hai trattato in modo chiaro l’argomento

I didn't get you well . Kindly Clear my doubt 1) the mah read on the battery don't exactly tell us how long it will take for the battery to get discharged because the voltage will not always remain constant and it depends on what battery we use .this is true but you added a point saying if we know the Capacity of the battery and divide it by the current then only we'll get the real time it will take. But the mah noted on the battery is of course the Capacity right? If yes it'll also not give us the real time I'll take. 2) If you say in parallel voltage is always constant then there would be no discharge right?

I was so confused but now I get it

Very good information. I expected it

Thank you for such good explanation!

It is a very simple explanation. I thank you so much

This helped me a lot, Fantastic job, keep it up

Good & explained very well... if u multiply 20x 3000 mah = 60,000 mah= 60ah...

How to calculate the charging voltage and current for 3 or multiple li ion batteries connected in series & How to calculate the charging voltage and current for 3 or multiple li ion batteries connected in parallel

You’ve helped me a lot, thanks!

It adds my knowledge. Thank you.

big respect from montenegro

Why does the voltage supplied by the 1.2V battery reduces over time instead of constantly supply 1.2v at any instance of time?

but what if you have batterys in series with different capacities how do you calculate the amp hours of the overall battery pack

When people said "milliampe hour" in their smartphone reviews I thought they were saying "million power" I've been getting it wrong this whole time😭

I want to know the complicated calculation to determine how long it would power the circuit without dropping below 3V...

I knew I'd have to research batteries soon. Can't be using USB power for everything! Thanks for this!

Oh I have a doubt.... You are given some batteries of 6V and 100mah each. What can be the best possible combination of batteries, and resisters so that it can run a load of 300mah and 12V. Please tell me the answer... I am confused

May I ask what will happen if we parallel the 3.7V battery with the 1.2V battery with the LED light? Can we benefit from the both world?(more mAh and high voltage), I suppose it doesn't work like that but I don't know why.

so are we saying the batteries last longer when in parallel than in series for drawing the same amount of power????

I tried to simulate three parallels batteries like those on Every Circuit, with a LED lamp, and it shortcircuited haha... it seems you need to use diodes to do this, amiright?

Hello I just subscribed and hit the Bell. I have one question please. I just purchased a battery for my Sony camera that is. 8800 mah Is there a way I can test it to see if that's actually what it is when it was purchased ? Thanks. Keith

I read that the perfect temperature for charge/discharge of li-ion batteries is 27 degree celsius, my question is: Is it possible to build a battery cooling system with Paltier elements to keep batteries always at 27 degree celsius, to get max power output ?

Battery ka ampere keise calculate karenge hum ? Agar ek 18650 li-ion battery 2200mah ka hai to hum 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, etc etc battery pack ka total ampere hum keise pata kar payenge taki hum BMS ka exact capacity laga payenge.

So the higher mAh just means it will last longer when item is in use? IE if it normally last 1 hour a higher mAh wil make it last more than 1 hour? Does it affect the other items in the device like a motor or a fuse to blow?

My laptop battery new cell is 4.2V. To test it's mAh, should I start measuring time only when it has touched 3.7V, Or, should I measure time from 4.2V?

What about using a zenor diode for constant voltage output instead of using a resistor? Wouldn't it be more practical?

Thanks very informative and clearly explained now of to create battery packs haha

Hi, I have a simple question for which I did not get an answer. I.e If I’m having a 3.7 v lipo battery then what should be the amount of voltage which I should provide to charge it? How do you calculate it? What if I'm having a 12 v battery. Is there any formula for it and if yes then help me out with this.

What is the resultant potential when 1.5v and 5v batteries are connected in parallel?????????????????

So basically the more mAH the longer the light will last?

sorry if this is a dumb question and anyone feel free to answer. i got a new battery pack for my remote control digger. the mah on my original battery was 400mah. the new replacement battery pack i bought is 2400mah. the question is .. will my charger still charge the batteries or do i need to get a new charger that matches the mah.... or is it unrelated and doesn't matter? please help lol

What is the maximum current you can draw from an AAA battery?

Very informative video dear Sir

thank you Sir!

What should be the battery capacity for a solar street light of 12 v 15 w to light for one night that is 12 hours?

How long it will charge the li batteries? That calculation please show.

how can we find the capacity (ampere hours) of a battery if we make one or if we know only its voltage? how can we measure the ampre hour of any battery?

So if I have two 20V batteries and one is 2.0AH and the other is 4.0AH will the 4.0AH just last longer or will it also be more powerful?

What I really want to know is, what determines the capacity of a given battery cell? I know there are 2600 mAh li-on cells and for the same weight and dimensions, there are also some 3500 mAh cells. What do the 3500s have more of than the 2600s that give them more capacity? Both cells are 3.7v. what exactly dictates capacity?

What's a good mR resistance reading for a brand new Samsung Q30 18640 15A button top unprotected battery? What's mR mean actually? I'm using a Zanflare C4 charger tester. Thanks much

why dos it cost more for rechargeable 170(mAh) than say 2000(mAh) for 9v battery for my tester???

Thanks dude👍🙂 thats was helpful idea! Now i understand what is comparison of SERIES and PARALLEL to combine the two batteries "18650 3.7v 👍🔋😅 Maraming SALAMAT!🇵🇭 'Thank you very much! 👍😁

i want to knw which one is more prefareable parrallel or series connection?

Does this mean that a 3000mAh battery can supply or a device can draw a max current of 3A ?

6x18650 batteries and im using 12v bms..how long it takes to fully charge.im using 12 v 1a charger.hope you can help me about this.

Its output is 11.1 nominal and at full it shows 12.3 last

In series current wont changw right? But what if u series different current?like for example., 2v 5amp 3v 3amp How about in parralel?

Thank you

will the voltage required by 3 led of 3 V each is 9 v or 3 v??

Thanks for the great information, But tell me how does all the battery capacity is forced to be a single battery capacity in series battery connection? To me each battery is a box filled with x amount of electrons eagerly waiting to travel the world from -ve terminal to +ve terminal. Can you please elaborate?

How to check Current Storing Capacity in terms of mAh of any battery....Please explain...

Nice explain

This is a great channel. :) I have a question, SE, it goes like this: I've been trying to measure the amps in a variety of batteries using a super-cheapo DT-830B multimeter. It's really not a very satisfying or reassuring experience. The multimeter readings simply don't tally with the indications on the batteries. And i've just watched a video suggesting measuring amps of batteries isn't recommended. Which leaves open the original question: How can i figure how what the remaining capacity (in amps) remains in my batteries. Do i have to use the volts reading as a rough proxy ? (eg relatively low volts == low amps) Is there a correlation coefficient that will allow me to calculate an 'estimated amps' from volts ? Thanks to anyone (and everyone) that volunteers an answer :-)

Thank you for this video.. I'm new to 18650 rechargeable batteries so excuse the maybe silly question i'm about to ask. What does or is the difference between 3200mah or a 3600mah or 3700mah? Does it last longer the more mah? and does it take longer to charge the higher the mah? and is there anything else? I thank you in advance for clarification? Peace!

Thank you for this great video, i have question, if i connect 3 Li-On batteries in series but the capacity of each one is different than the other one, how can i calculate the capacity in this case?

Very useful indeed

how do you get 60mA for the led consumption ? 3 led x 3v= how to get 60?

How to measure the Amp of a battery with a Digital Multi Meter?

Isn't 3 times 1.2V NiMH in series only enough for one 3V led? Or r the 3leds in parallel? But then u should ve metioned. Otherwise some get confuse. Thanks by the way 4 all your hard work.

why capacity doesnot increase in series combination ?

Do you make a videos about complex math calculation?

Excellent!

Hi how about I want to increase mAH. 12v DC 2000 mAH

thanks for sharing like this video i know new idea

Very nicely explained 😌 👌

So explain how to do the math to see ho long it will last when it is fully charged. I need to see how long a 10000 mah battery would last.

Amazing

Perfect

Good stuff

4 amb ,how to make serial, 3.7 v battery

Power consumption in unit?

how to check mA in maltimitar?

you can recharge 1.5v if careful

What is current value when fully discharge

let’s say you’re trying to charge a device and it requires 60 mAh and your battery is like 1000000000mAh, the battery won’t overload the device? The battery will just last longer?

Great video, what applications would you prefer more capacity (parallel batteries) over more voltage (series batteries). Would it just be when high voltage is not important?

Would you be able to explain how you worked out that you need a 60 ohm resistor , also why you would need one ? Cheers

Nice explanations

What is difference in mah and mAh

What if I connect 2 different voltage in parallel

back up system explain again

How to check 1 laptop cell mah of multimeter

It would of been really awesome if you had a circuit diagram of the circuit while your talking xD

Lost me at 4:31. 60 ohms at 3 volts = 20 milliamps? 3v/0.06Ohm= 50mA. WTF?

Sir, how long will I charge a double A battery (1900 mah) ? my status indicator is broken. Thank you. Hope youll answer this

Stunning, even the local Einsteins could follow that (micky take of the locals around here)

Thanks a lot!!!

ma heish