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gopher
Coffee Bean Extraordinaire



Registered: 11/22/17
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who's a electronics guy or a math guy, I need help
#28668316 - 02/20/24 03:02 PM (4 months, 3 days ago) |
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My friend won't let me charge my batteries, she says it costs $20 an hour and her landlord will kick her out
Can someone help me figure out the actually electricity my charger uses
I have the XTAR DRAGON VP4L charger
Input is 12 V 3A
Output is 4.2V x 4 slots 0.5A
I charge boyt 2450mAh AA batteries
And also 5000mAh 21700 batteries
And say it takes 6 hours to charge one battery for a numbers sake
How many watts or kilowatts to charge a AA??
How many watts or kilowatts to charge a 21700 battery?
I don't know electronics or math either so I need help
-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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Cannabischarlie
Resident badass


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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668319 - 02/20/24 03:04 PM (4 months, 3 days ago) |
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-------------------- This section of the signature line has been intentionally left blank.
we could all use a little more sunshine.
yeah, she's funny and somewhat interesting. not a beauty queen, but not bad lookin. i'd feel quite honored to fuck janine garofalo. -tiny_rabid_birds
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spirit_shadow
Beta Crypt 3



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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668321 - 02/20/24 03:04 PM (4 months, 3 days ago) |
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Ok so if your input is 12V with 3 amps and the output is 4.2V then all you need to do is pretend you are hurt right outside your friends door and when they come out to help you just run inside, lock them out, and charge your batteries for free
-------------------- I'm so old school I don't even know what old school means.....(this account is automated, all posts related to illegal activities or advice thereof are strictly from numerous online sites and are for informational purposes only)- Circa 2011 Ban lotto
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JonBongGroovy
Sober these days



Registered: 01/23/15
Posts: 3,926
Loc: Hawaii
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Re: who's a electronics guy or a math guy, I need help [Re: Cannabischarlie] 1
#28668322 - 02/20/24 03:05 PM (4 months, 3 days ago) |
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$20 per hour??? I don't understand.
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gopher
Coffee Bean Extraordinaire



Registered: 11/22/17
Posts: 14,361
Loc: Canada
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Re: who's a electronics guy or a math guy, I need help [Re: JonBongGroovy] 1
#28668342 - 02/20/24 03:19 PM (4 months, 3 days ago) |
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-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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spirit_shadow
Beta Crypt 3



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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668348 - 02/20/24 03:20 PM (4 months, 3 days ago) |
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Challenge them to combat. If you win you get to charge your shit for free. If they win you gotta pay $20. Street rules
-------------------- I'm so old school I don't even know what old school means.....(this account is automated, all posts related to illegal activities or advice thereof are strictly from numerous online sites and are for informational purposes only)- Circa 2011 Ban lotto
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openmind
curious


Registered: 08/03/07
Posts: 14,026
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Re: who's a electronics guy or a math guy, I need help [Re: JonBongGroovy]
#28668379 - 02/20/24 03:42 PM (4 months, 3 days ago) |
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Quote:
gopher said: My friend won't let me charge my batteries, she says it costs $20 an hour and her landlord will kick her out
Quote:
JonBongGroovy said: $20 per hour??? I don't understand.
I don't understand either lol...
Gopher, how did your friend come up with the # that it will cost $20 an hour to charge some small batteries? That figure is soooo much higher than what it actually costs.
And why would using electricity be something that her landlord will kick her out for?
Just sounds so bizarre..."No you can't charge your batteries here, that costs $20 an hour and my landlord will kick me out"
lol wut
-OM
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Gene Hackman
Mastermind



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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668393 - 02/20/24 03:48 PM (4 months, 3 days ago) |
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I ran it through chatGPT, so take this with a grain of lithium salt:
For four AA 1.5V 2450 mAh batteries: Energy Input = Power × Time = 36 W × 12 hours charging = 432 Wh = 0.432 kWh
For four 21700 3.7V 5000 mAh batteries: Energy Input = Power × Time = 36 W × 29.73 hours charging = 1069.08 Wh = 1.069 kWh
Assuming electricity is 28.6c/kWh, it should cost $0.43 in total to charge all eight batteries.
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gopher
Coffee Bean Extraordinaire



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Re: who's a electronics guy or a math guy, I need help [Re: Gene Hackman]
#28668407 - 02/20/24 03:51 PM (4 months, 3 days ago) |
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-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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flugelizor
Furious ball of nothing


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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668535 - 02/20/24 05:05 PM (4 months, 3 days ago) |
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Power = current x voltage Input is 12 V 3A = 36Watts This is less than a lightbulb. An old incandescent light bulb is 60 Watts.
Is it a house? voltage of the charger should be 120AC, not 12DC. Is your friend allowed to enjoy light?
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JonBongGroovy
Sober these days



Registered: 01/23/15
Posts: 3,926
Loc: Hawaii
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Re: who's a electronics guy or a math guy, I need help [Re: flugelizor]
#28668536 - 02/20/24 05:07 PM (4 months, 3 days ago) |
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We're all confused by this situation.
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gopher
Coffee Bean Extraordinaire



Registered: 11/22/17
Posts: 14,361
Loc: Canada
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Re: who's a electronics guy or a math guy, I need help [Re: flugelizor]
#28668538 - 02/20/24 05:09 PM (4 months, 3 days ago) |
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Yeah it's plugged into 120 outlet, but it says 12v Input in the writing in the plastic for input
She doesn't let me turn lights on unless I'm cooking or eating, she did but me a headlamp I'm allowed to use
-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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Crazy_Horse
I’m Rick James, bitch!


Registered: 08/15/16
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Loc: Hampsterdam
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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28668557 - 02/20/24 05:26 PM (4 months, 3 days ago) |
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E=mc2
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GenericHero
crap dangit this sucks!


Registered: 07/07/20
Posts: 2,336
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Re: who's a electronics guy or a math guy, I need help [Re: gopher] 2
#28668660 - 02/20/24 06:24 PM (4 months, 3 days ago) |
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Quote:
gopher said: Yeah it's plugged into 120 outlet, but it says 12v Input in the writing in the plastic for input
She doesn't let me turn lights on unless I'm cooking or eating, she did but me a headlamp I'm allowed to use
She sounds high maintenance
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halfass mycology
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koods
Ribbit



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Re: who's a electronics guy or a math guy, I need help [Re: GenericHero]
#28668769 - 02/20/24 07:52 PM (4 months, 3 days ago) |
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4.2V .5 A is 2.1 watts. If it takes six hours that equals 12.6Wh per battery.
The average cost of electricity in Ontario is $.14 per kWh or $.00014 per Wh
So the cost is .00014 x 12.6 = $.0017 per battery.
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christopera
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Re: who's a electronics guy or a math guy, I need help [Re: koods] 1
#28668895 - 02/20/24 09:44 PM (4 months, 3 days ago) |
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Yeah it's damn near nothing to charge a battery, or even a few. It's way more expensive to buy single use batteries for sure.
$20 an hour would bankrupt just about anybody considering their electric stove or electric drier would pull 1000 times (just guessing) the amperage of that battery charger. Imagine a single window AC unit at those rates? It would be $1000 a day to operate.
-------------------- Enjoy the process of your search without succumbing to the pressure of the result. A Dorito is pizza, change my mind. Bank and Union with The Shroomery at the Zuul on The internet - now with %'s and things I’m sorry it had to be me.
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gopher
Coffee Bean Extraordinaire



Registered: 11/22/17
Posts: 14,361
Loc: Canada
Last seen: 46 minutes, 7 seconds
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Re: who's a electronics guy or a math guy, I need help [Re: christopera]
#28669247 - 02/21/24 07:26 AM (4 months, 3 days ago) |
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Uggghhhh
My friend went to the gym this morning and left her phone
So I took her phone and to text messaged her landlord
I explained it uses 25 watt hours per battery or $0.006 per battery
Because of her last message to the landlord because of this the landlord is unsure
The landlord said she has to show it to the maintenance guy when he comes in
I'm living in crazy town, just let me charge my stupid batteries
-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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spirit_shadow
Beta Crypt 3



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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28669249 - 02/21/24 07:28 AM (4 months, 3 days ago) |
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Quote:
gopher said: Uggghhhh
My friend went to the gym this morning and left her phone
So I took her phone and to text messaged her landlord
I explained it uses 25 watt hours per battery or $0.006 per battery
Because of her last message to the landlord because of this the landlord is unsure
The landlord said she has to show it to the maintenance guy when he comes in
I'm living in crazy town, just let me charge my stupid batteries
Should have went with my first idea. You would have charged batteries by now
-------------------- I'm so old school I don't even know what old school means.....(this account is automated, all posts related to illegal activities or advice thereof are strictly from numerous online sites and are for informational purposes only)- Circa 2011 Ban lotto
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The Blind Ass
Bodhi



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Re: who's a electronics guy or a math guy, I need help [Re: gopher]
#28669284 - 02/21/24 07:59 AM (4 months, 3 days ago) |
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goph, go charge your batteries wherever you need to, maybe somewhere without someone around who doesn't know wtf they're talking about confusing you as to how confused they are about their own utility bill. you got this.
-------------------- Give me Liberty caps -or- give me Death caps
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gopher
Coffee Bean Extraordinaire



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Re: who's a electronics guy or a math guy, I need help [Re: The Blind Ass]
#28669336 - 02/21/24 08:36 AM (4 months, 3 days ago) |
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The landlord talked to the maintenance guy and said I can run the charger as long as I don't leave it unattended, so unplug it if we go out or overnight, they are afraid of it overheating, I didn't argue even though I charge at the smallest 0.5 amps to maximize life, it doesn't overheat unless you charge a NiMh at 1 amp or a lithium at 2amp
-------------------- For most of the normies out there, an operating system is just a bootloader for Google Chrome. Since Disney has obtained tremendous value from the public domain, knows how important the public domain is, and is firmly determined to never contribute anything to it. My pronouns are He and Him, and my adjectives are Fat and Jazzy
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