What are Watt Hours/How to calculate how many you need

  Рет қаралды 19,910

JohnnyNerdOut

JohnnyNerdOut

6 жыл бұрын

I use some generalizations in this video based on my personal experience. I may be wrong, but probably not.

Пікірлер: 56
@_0O0O0O0_
@_0O0O0O0_ 2 ай бұрын
Nice. Thanks for using Watt hours to define Watt hours. Really helpful!
@Rick-uy4kp
@Rick-uy4kp 3 жыл бұрын
This is great information. I'd heard and read the math before but not how it applied to riding. I got this now. Mine is just a playbike so I can keep up with the doggo. There are DIY battery kits that go together like LEGOs, no welding on the cells. I'll build a couple small, 2 or 3 lb, 52v, 3ah batteries. Build them to the size of an existing non-conductive box or lay up my own. When a battery starts to fail I tear it apart and replace the bad cells. Thanks Johnny. This is where I go when I need a problem solved.
@FleischerFamilyFun
@FleischerFamilyFun 2 жыл бұрын
Best explanation on this topic. Clear and concise.
@jonathanjohannis6035
@jonathanjohannis6035 3 жыл бұрын
grat explanation. exactly what i needed to know. 36v 17Ah battery = 612 Whr. thanks man!
@forevergoddessqueen4404
@forevergoddessqueen4404 3 жыл бұрын
Not boring at all. This should be taught in school common knowledge I swear.
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
Thanks!
@alanjaugust1696
@alanjaugust1696 6 жыл бұрын
Short, sweet, and to the point. Good explanation. I intend to build my own 52 volt 20 amp battery using 18650 cells. It will be used on 3000 watt Cyclone mid mount motor. I am building my ebike from scratch. Got my 29er frame set from Bike Nashbar a couple of weeks ago, and I’m starting from there. It was one of your videos, among others, that gave me the inspiration to DIY ebike.
@JohnnyNerdOut
@JohnnyNerdOut 6 жыл бұрын
So glad to hear! Is it going to be a MTB setup or more road oriented? I'd like todo a frame up build as well, might actually make it easier at a lot of points during the build.
@gilgerard8097
@gilgerard8097 3 жыл бұрын
r u an engineer?
@chasinglife43
@chasinglife43 3 жыл бұрын
This is a great video, straightforward and to the point. I have been having a somewhat difficult time with the start of my solar system build for my greenhouse in figuring all of the calculations. Although not exactly the intended subject, this has been a great help to me. Many thanks fellow awesome nerd!
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
Awesome, thanks!
@MrJypsye
@MrJypsye 5 жыл бұрын
that actually helped a lot thanks
@captainjayc9217
@captainjayc9217 3 жыл бұрын
How much watts and volts do I need for an e-bike conversion for going uphill? I need to go up a steep hill to go home after fishing in a lake (approximately 30 degree). The ride mostly likely only lasts 5 to 7 minutes long. I don't mind pedaling; I just cannot deal with going up a steep hill. The ride will be exclusively in warm season. Currently I have to walk the whole way (like 20 minutes going uphill on foot), and I don't really like this. I want to see if I can improve the situation and make the trip more enjoyable. I understand that you recommend mid-drive for going uphill over hub. Because I need it for going uphill, regen is not a requirement. What I want to know is watts and volts. Thanks for any info that you can share. I also welcome other people opinion.
@robertmotion
@robertmotion Жыл бұрын
Great video. Question...I'm new (self taught) to electrical engineering, repair + maintenance of ebikes. I installed a 4-light system on ebike - backlight, high beam (×1) and low beam (×2). I run everything through a 12v/24v power source (bank). Recently, I decided to add rocker switch (×2) to separate high be from low beam. I noticed that the LED indicators on the rockers will sometimes work, sometimes not but the lights will always work. I've looked for shorts, can't find anything. Power source is rated for 12v/24v. I register 28.5v on multimeter when everything is turned on. Could this be the cause why the rocker lights don't work? I've switched out rockers twice....same result. Hope u can help. Great video. /bklyn 👑
@budwhite9781
@budwhite9781 3 жыл бұрын
Outstanding👍
@keefuilow8992
@keefuilow8992 2 жыл бұрын
i am from Malaysia. Thank you. Your explanation is clear and simple to understand to provide a rule of thumb. I plan to upgrade my touring bike soon! Your videos are good. Keep up the good work.
@JohnnyNerdOut
@JohnnyNerdOut 2 жыл бұрын
Thanks!
@user-zj1cz9fc6u
@user-zj1cz9fc6u Жыл бұрын
How do find out how much Wh/mile does your particular EV use?
@margieolvida1214
@margieolvida1214 5 жыл бұрын
how many views for 4000 watch hour's
@kracksmith4ejm1
@kracksmith4ejm1 2 жыл бұрын
per this vdo is it fair to say a lot of PAS will be 15wh, using throttle with no PAS is 30wh, and full throttle max will be 50-60wh and with hills, add another 10wh to be 70wh ?
@carpenterfamily6198
@carpenterfamily6198 2 жыл бұрын
If a device lists its ( consumption ) Wattage, is that number 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 . . . wish I own one of those Kill-O-Watt gadgets 🙂
@JohnnyNerdOut
@JohnnyNerdOut 2 жыл бұрын
If it draws 10w, it will draw 10wh (10 watt hours)
@beatsentertainment2347
@beatsentertainment2347 4 ай бұрын
Was wondering as well. I have 350w brushless rear wheel and running 36v/48v controller. Can i run a 48v 17ah battery? Or 48v 13ah? At the moment I'm using 36v 7ah and i run out of juice as soon i get to work then i have to charge it before I leave my work place to my way home. It's annoying honestly. Thanks in advance
@JohnnyNerdOut
@JohnnyNerdOut 4 ай бұрын
If your controller is rated up to 48v then yes you can use a 48v battery 👍
@beatsentertainment2347
@beatsentertainment2347 4 ай бұрын
@@JohnnyNerdOut thanks for the reply 🙏
@TheCriticalChris
@TheCriticalChris 2 жыл бұрын
May I ask, at 2:08 how did you arrive at that figure of consumption of 15 watt hours per mile?
@JohnnyNerdOut
@JohnnyNerdOut 2 жыл бұрын
It’s a rough estimate based off my riding experience
@loamy
@loamy Жыл бұрын
52Volt battery?
@peacelovegoldenrule
@peacelovegoldenrule 2 жыл бұрын
Found it. Gracias. 🤓
@jfjoubertquebec
@jfjoubertquebec 3 жыл бұрын
Thank you for explaining this as a balance of multiple variables: Telling it like it is. Awesome! So a 750Watt motor will draw more at equal speed than a 500 Watt motor?
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
I wouldn't say that, only if its a much bigger sized motor physically. otherwise it would be the same on paper. The only fifference is that is has the potential to draw more power
@CoreyW75-ck7tf
@CoreyW75-ck7tf 7 ай бұрын
So my question is a watt hour. Im getting a lifepo battery ( 600 watts ) with 298watt hours. Im powering 4 watt cameras . How many hours will my 298 watt hour keep my cameras running before my battery is dead. Thats what Im trying to figure out
@JohnnyNerdOut
@JohnnyNerdOut 7 ай бұрын
Divide 298 by 4=74.5. If your battery is 298 watt hours and you are using 4watts for an hour (4wh) you can expect about 74 hours of power
@CoreyW75-ck7tf
@CoreyW75-ck7tf 7 ай бұрын
@@JohnnyNerdOut Hey brother. That is a great help. Thanks for the answer. Keep up the good work.
@ksrnate
@ksrnate 4 жыл бұрын
I understand but how do you know how many watt hours your bike needs? So I have a 1600watt scooter, if I'm full throttle all the time how many watts per hour is that going to use??? I understand the rest 👍
@JohnnyNerdOut
@JohnnyNerdOut 4 жыл бұрын
1600 wh. 1600 (watts) x 1 (hour)= 1600 watt hours
@ksrnate
@ksrnate 4 жыл бұрын
@@JohnnyNerdOut Oh I see 🤣 thanks mate 🤘
@gilgerard8097
@gilgerard8097 3 жыл бұрын
sell the battery, buy a car.
@frakafrocka
@frakafrocka 4 жыл бұрын
Why is it called a watt hour? What’s the hour for? Thanks for great vid
@JohnnyNerdOut
@JohnnyNerdOut 4 жыл бұрын
How many watts over an hour. So if my lightbulb was pulling 40 watts and I had it on for an hour, it would pull 40 watt hours.
@frakafrocka
@frakafrocka 4 жыл бұрын
@@JohnnyNerdOut thank you
@naushadahmad6441
@naushadahmad6441 3 жыл бұрын
how many hour are use 9 watt LED Bulbs when connect with 9 Volt battery
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
I don't understand the question.
@gilgerard8097
@gilgerard8097 3 жыл бұрын
i need to know the current = I...Volts x I (Amps) = Watts. A standard household 9V battery has a capacity of about 500mah. thats 500 milli amp hours. so 9V x .5 Amp-hours = 4.5 Watts, This is the batterys capacity. so 4.5 Watts, is 4.5 Watt-(1) hours. your Led bulb needs 9 Watts from a 4.5 Watt-hour capacity. so half an hour, continuously, Theoretical and Peak, NOT ACTUAL.
@igorshravljevic7784
@igorshravljevic7784 3 жыл бұрын
If my fridge uses 55w on high and 33w on low.. what solar do i need for it to run all night? Thanks to all answers. Will 100w solar be enough or?
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
It should but those numbers seem really low for a fridge. Get a battery that has double the capacity you need 👍
@igorshravljevic7784
@igorshravljevic7784 3 жыл бұрын
@@JohnnyNerdOut thanks bud i appreciate the reply. What do you think if i just go double northstar battery and avoid the whole solar thing would that be over kill or? Thanks again
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
@@igorshravljevic7784 100w solar panel is less than $90. It’s better to have it and not need it
@igorshravljevic7784
@igorshravljevic7784 3 жыл бұрын
@@JohnnyNerdOut thanks a lot bud
@highhat5229
@highhat5229 3 жыл бұрын
Uhhg I'm lost. So if volts x amps = watts, then 12.6v x 20ah = 252wh?? . So my battery can run 252 watts for 20 hours?? That can't be right can it? Can anyone help?
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
252 watts for one hour
@JohnnyNerdOut
@JohnnyNerdOut 3 жыл бұрын
Wh is "watts for an hour". So you could 126 watts for 2 hours etc. But that's in a perfect world vacuum type situation. Most likely you'll get a little less.
@gilgerard8097
@gilgerard8097 3 жыл бұрын
watt-hour is a storage of energy. in a battery. what you do with it , is your business...250 watt-hour storage, can power mathematically 250 watts / 1 hour. 1000 watts/15 minutes, 100W incandescent light bulb / 2.5 hours...peak and theoretical. NOT ACTUALLY. i told the dude with 1600 Watt scooter battery, to sell his battery and buy a car, because that batter is worth $700+
@blwbisht
@blwbisht 3 жыл бұрын
🤙🤘
@ascend3654
@ascend3654 4 жыл бұрын
🤕
@Slammo2001
@Slammo2001 Жыл бұрын
Kinda !
AMP HOURS EXPLAINED (amp hours vs watt hours)
10:59
EXPLORIST life Mobile Marine & Off-Grid Electrical
Рет қаралды 898 М.
Best KFC Homemade For My Son #cooking #shorts
00:58
BANKII
Рет қаралды 71 МЛН
Я обещал подарить ему самокат!
01:00
Vlad Samokatchik
Рет қаралды 9 МЛН
What's the Difference Between kW and kWh? | EV Basics
7:19
EV Pulse
Рет қаралды 66 М.
What is mAh? (Battery Capacity) - Electronics Basics 18
7:25
Simply Electronics
Рет қаралды 369 М.
How To Ruin Your Electric Car's Battery - 3 Common Mistakes
12:54
Engineering Explained
Рет қаралды 658 М.
The Thunder returns! Dualtron Thunder 2 - electric scooter review
16:57
Understanding Volts Amp Hours and Watts Before Buying an Ebike
14:23
What Tools do you need for a Mid Drive Install?
12:03
JohnnyNerdOut
Рет қаралды 33 М.
The $5 Mid-2000s Mini PC - Thrift Store Finds
32:43
Michael MJD
Рет қаралды 44 М.
Best KFC Homemade For My Son #cooking #shorts
00:58
BANKII
Рет қаралды 71 МЛН