What Does the Ah (Amp hour) Mean on Cordless Tool Batteries? A Quick and Basic Explanation.

Wondering what in the world Ah (Amp hour) means? Is a 5Ah battery more powerful than a 2Ah battery? Does it last longer? This video gives you a quick and basic explanation of Amp hour and how it affects your cordless tools.

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[thescarlettbandit]

Four years on, still very informative.
I just want to say, thank you, and boost your algorithms 😊🕊🇬🇧

[tappertrainman]

Thanks for clarifying that the larger Ah batteries are indeed just a little bit stronger. I've noticed this myself with certain higher-drain devices like my palm sander. It works much better off a 4Ah battery than a 2Ah. My impact/drill drivers work fine off the smaller capacity batteries.

[fredthehead]

Simplified analogy: Volts = size of gas tank. Amp hours = amount of fuel in the tank. Watt hours = Volts x Amp hours = hour far you can drive on a single tank.

[teresaellis]

Thank you! I was trying to figure out what size of battery we needed for a bicycle generator project and now I know and I understand much more about Ah and batteries. 😊 I put off building a bicycle generator for years because all the different electronic parts were intimidating and confusing to me. Then my son was gifted a very nice motor to use to build such a project and I needed to dive in and figure it all out. A 7 Ah deep cycle battery should be plenty large enough. Phew, one more thing off the check list!

[kgt]

Very well explained, bro, but when talking about amp and voltage rules regarding circuitry (series, parallel or combination), instead of saying, the "amp hours" add up, or share (respectively) it's best to leave out the "...hours" part in that phrase.

Now I do imagine that using "amp hours" in that part of your explanation might have been intentional to make it easier for some, but that could cause a bit of confusion since "ah" really doesn't fundamentally tie into circuit terminology. Battery terminology, yes, but not circuitry.

Other than that, your presentation is absolutely perfect. Thank you for producing and sharing this 🙂

Now, please don't be offended by my critique. I mean it ONLY as an observing journeyman electrician ✊🙂

[atlred]

How come they just won't say how long the battery will last or giving an estimate time on how long a battery lasts because that's the answer that most people want

[jayfeliciano]

Hi i have an ingco drill with 2ah batteries, and i recently bought an ingco grass cutter which use the same battery, and after 4 to 5x of used the batteries dont charge as much as before. Before when i use the grass cutter it takes around 20mins before it drains but now only 5mins, it killed my batteries, do i need to use a higher ah for the grass cutter? Thank u so much

[TomisaLami]

Can I use two batteries with the same voltage but different amp hours in the same device?
For example I leaf vacuum that came with a 40 V five amp hour battery. But I'm wondering if I can use my 40 vote for him our battery in the leaf vacuum. Same manufacturer same connections same voltage different amp hours.

[Canoneosmiami]

How many times can 18v 2ah charge iPhone, iPad 6 ?

[jmj]

This was just a video I was looking for. Explained everything to me perfectly thank you very much for the video

[Bart-Did-it]

Ah the Higher you go the longer she lasts 🔋

[briggsb]

So as long as the voltage is the same I can use any ah battery in my tool?

[HappyHands.]

clearly the higher amperage batteries have more capacity but Is there a noticeable difference in tool motor speed or torque with regard a 4 amp battery vs a 5 amp battery?
Does 1 Amp make a difference?

[alexserret]

Wow guy thank you so much for putting this video up on what those letters mean going to send the video to my brother the knucklehead blaming the drill instead of the battery awesome video buddy thank you

[fortitudevalance]

Bought a Metabo 5.2ah battery to work on a 18v cool box mainly ans for other Metabo tools that’s revelry acquired. The 5.2ah is not sufficient enough at all to sustain the cool box in the height of summer so will be getting a 10ah battery which costs a lot but should supply the box with enough juice for treble the time.

[MorrMedia]

Good video, and grazes a broader topic I'm always trying to understand more about as a beginner woodworker: the electrical side of woodworking (extension cord gauge, amps/hp/watts/voltage, lithium ion battery care, etc.). I struggle to know what's a safe level of power to draw from a regular outlet and when my breakers will trip. Perhaps a video some day on the basics of the electrical side of woodworking for people who don't use a 220v setup? Seems like you have a good understanding of the topic. Thanks!

[chrisgeoss]

Ok, I figured that out and it makes sense. Explain now brushed vs. Brushless why and is it only new technology as to why we have less brushed tools, what was the purpose. Was one style more powerful or was it only due to the differences in technology....if that makes eense

[ronsbeerreviewstools]

Thanks for posting a very informative video, cheers !

[honsville]

I notice the same with my dewalt tools: circular saw and drill. The tools get bogged down with a 3ah batter as opposed to a 5ah battery.

[bigsled]

Hello
Was getting ready to buy the 20v dewalt 1/2 brushless cordless drill with either the 1.5 ah batteries or the 2.0 battery.
Want to also buy the dewalt 20 volt impact wrench XR894 without/battery for taking lug nuts off 2 cars about 3 times a year.
Will the batteries that come with the drill ( either the 1.5 or the 2.0 ) be sufficient for my application ?
It seems like I wouldn't need the additional 12% of power in the test/ link you posted.
The dewalt 5.0 battery lists at 160.00 but sells for about 120.00
I have a cordless impact 18 volt model dc821 someone gave me years ago but don't like it as it sometimes takes the lugs off and sometimes does not, either way I have to give it power for 20 sec. or so to get it to go. Its rated at 160 ft/lbs

Regards