I have tried this, but the bulb is not glowing at all. And when I remove the two wires from the battery terminals and joined it, then it's glowing.. not sure what is the reason. Please suggest.
भाई इस लेड एसिड बैटरी को चार्ज करने के लिए 14.4 वोल्ट और 1.4 एंपियर की जरुरत होती है आपने लैपटॉप का चार्जर लगाया है 19 वोल्ट जिसके की एंपियर बहुत ज्यादा होते हैं वोल्टेज तो आपने लोड दे कर एडजस्ट कर दिए पर करंट/ एंपियर का क्या ? ज्यादा एंपियर तो आपकी बैटरी को खराब कर सकते हैं
Mr electron, a very good video and educative too, what can we add to make work automatically? To stop charging if battery is fully charged. Thank you, pls reply
What about the high ampere/current from this laptop charger ? Ups battery need 14.4v to charge at 1.4 amp max But you are give accurate volatage with high ampere/current It will not effect on battery health ???
I like your video but i need some technical information the dc 12v bulb is OK but what about amp calculation like if i have multiple batteries with different AH capacity how can i measure current 1. if my charger produce 4amp current and i have attached 12v 20watt bulb how much current will goes in my battery ? 2. how much current produced by DC 12v bulbs like 12v 20watts, 12v 50watts, 12v 100watts ? 3. can i use my transformer based charger as an power source alternative of laptop charger ? i will really appreciate if you answer thee questions Thank you
So when applied extra load 19 V droped to 14V.. like that ..that means that charging current also drops?i have seen in the amptek data sheet that initial Charging current for 12V battery should be less than is 0.25C like if 12 V battery has 7.2 amp-hr ,then initial should always be less than 0.25*7.2=1.8A ...is that true......? I mean the charging current really matters? I seen in the data sheet that charging voltage should be on 14.6V to 15 V & if the battery is COMPLETLEY discharge and now charging than they say that initial current should be 1.8 or else the initial current should be 0.4C ../0.4*7.2=2.88A ...is it true? But even though they say that initial charging current should be less than 0.4C (2.88A)..they say better charge at 0.05C..like 300mA and when charging deep discharged battery... They say better charge at 0.075C=100mA ...dont the lower charging current effects the way battery charges? Wt is the range of charging current for 12V, 7.2amp-hr battery when charging voltage is in between 14V to 15V
Hi,why is that when I connect 12 volt bulb for few seconds the light is strong and after that becomes darker and the voltmeter says 16V where is the mistake?
Laptop charger after the Pelling wire.. there is not red or Black wire...ther is something colour wire . I mean how can I fine .. positive or nagitive... please reply me..thanks
How do you make the charger stop charging once the battery is full? That regulation is normally done by the laptop, not the charger right? Thanks for the vid!
i tried a car-bulb, it drew 8V, leaving 11.5 for battery, so no use. I then used 2-wheeler bulb, it fused. I think the laptop-charger's -ve should goto to bulb & then battery in series. If the laptop-charger's +ve goes to bulb & then battery, then the bulb can fuse.
No relation to bulb being on -ve or +ve .Check the voltage and wattage specification of bulb . Car bulbs are normally 12v and bike is 6 v . Try out lower wattage car bulb to get required charging voltage .Bike bulb might hv fused because it is 6v
I am listening to a man in his 40's asking a man in his 50's how to charge his motorcycle battery with a toggle switch and a 12v ac adaptor the conversation has went on for an 1 1/2 mean while I feel like saying look on you tube you dummy so tell me how to jump a motorcycle battery with a laptop charger or does he need a dc adapter
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I have tried this, but the bulb is not glowing at all. And when I remove the two wires from the battery terminals and joined it, then it's glowing.. not sure what is the reason. Please suggest.
how long it takes to charge the battery
nice trick!
thanks!
mine is not increasing the voltage i have 100ah battery
Sure but the charging will be slower.
भाई इस लेड एसिड बैटरी को चार्ज करने के लिए
14.4 वोल्ट और 1.4 एंपियर की जरुरत होती है
आपने लैपटॉप का चार्जर लगाया है 19 वोल्ट जिसके की एंपियर बहुत ज्यादा होते हैं
वोल्टेज तो आपने लोड दे कर एडजस्ट कर दिए पर करंट/ एंपियर का क्या ?
ज्यादा एंपियर तो आपकी बैटरी को खराब कर सकते हैं
@ Mr. Electron
Mr electron, a very good video and educative too, what can we add to make work automatically? To stop charging if battery is fully charged. Thank you, pls reply
Hi buddy, can I charge my 120AH tractor battery using this method and my laptop charger is of 8.5 amps
Amperes also can drop because of the bulb. isn't it?
What is the watt of that bubl?
What about the high ampere/current from this laptop charger ?
Ups battery need 14.4v to charge at 1.4 amp max
But you are give accurate volatage with high ampere/current
It will not effect on battery health ???
Is it ok to use cpu fan instead of bulb ?
Do you have video how to charge 12 volts laptop with adapter
Whats the time it is taken to charge
Please show where is negative or positive of bulb
Use motorcycle bulb
I like your video but i need some technical information the dc 12v bulb is OK but what about amp calculation like if i have multiple batteries with different AH capacity how can i measure current
1. if my charger produce 4amp current and i have attached 12v 20watt bulb how much current will goes in my battery ?
2. how much current produced by DC 12v bulbs like 12v 20watts, 12v 50watts, 12v 100watts ?
3. can i use my transformer based charger as an power source alternative of laptop charger ?
i will really appreciate if you answer thee questions Thank you
can we used normal home ac electric bulb or we need car bulb that is dc current. plz tell
Only 6v to 12v dc bulb
@@MrElectron ok thanks
@@MrElectron one more question if we dont put the dc bulb then
Charger over loads.. might die with time....
@@MrElectron thanks
That bulb it work like a fuse
Very helpful...
Thnx 4 uploading👍
Nitesh Kanwar Your welcome 😊
Bahi 6v battery (charging light battery) ko laptop charger se charge ho ga
Direct laptop charger se charge kar sakte battery y
old school clever, nice one
Can i directly connect 12 volt dc motor with laptop 19 volt charger? Plz reply bro!
Yes
You can
But the results rpm is too much.
Thanks..well explained..
wow it works bro thanks!
:)
can i use 20v output
laptop charger
Can we use 12v LED lamp instead of 12v incandescent lamp?pls reply.
So when applied extra load 19 V droped to 14V.. like that ..that means that charging current also drops?i have seen in the amptek data sheet that initial Charging current for 12V battery should be less than is 0.25C like if 12 V battery has 7.2 amp-hr ,then initial should always be less than 0.25*7.2=1.8A ...is that true......? I mean the charging current really matters? I seen in the data sheet that charging voltage should be on 14.6V to 15 V & if the battery is COMPLETLEY discharge and now charging than they say that initial current should be 1.8 or else the initial current should be 0.4C ../0.4*7.2=2.88A ...is it true? But even though they say that initial charging current should be less than 0.4C (2.88A)..they say better charge at 0.05C..like 300mA and when charging deep discharged battery... They say better charge at 0.075C=100mA ...dont the lower charging current effects the way battery charges? Wt is the range of charging current for 12V, 7.2amp-hr battery when charging voltage is in between 14V to 15V
Thnx for the sharing
Tell me about bulb watts and voltage
Can i use my bike light
When need to disconnect the charging.. And what is watt of bulb
35 watts
depends on how low the battery was and how your charger amps.
Gkn
Sala hindi ma nahi bol sakta
Good
Can I use directly 12v 0.8A adopter to charge 12v battery..?
No ...It drawsmore current .Your charger will burn out
Can I use a 12V - 1.0A charger without any parallel
How many hours charging the battery
Can I use 12 volt motor
Hello im from the Philippines.is it ok if i use the cpu fan 12volts instead of bulb?thank you sir! Your video is very helpful!God bless!
Hello!! Yes you can use a CPU Fan but the battery charging speed will be very very slow.
Thank you sir God Bless!
kababayan.. hhahahahhaha
@@jhondominicaguillonrios8794 kabayan Noli,
is it okay to use 12v Led Bulb 9watts ??
Hi,why is that when I connect 12 volt bulb for few seconds the light is strong and after that becomes darker and the voltmeter says 16V where is the mistake?
How to Watt this bulb ( light)?
Why the bulb is going dim
Can i use power adapter of my set top box which is 12 v
Use but you will have to use a DC to DC step up converter to raise output voltage ot STB adaptor to around 14.5 volts.
i have activa battery can i use activa's tell light bulb to reduce voltage and tell me the hour time to charge it.
Yeah !!
Don't leave it connected for long
connecting bulb wont lead to impure current to battery ?
nothing like that
how long i should charge battery like 3 hour or less or more?
bro why put bulp reason why please replay
to reduce volts fed to the battery
AASHIR
Thanx friend it's working.
can we use this for run a 12v dc motor
How much time it's take to charge 12v battery
Great vid thanks, do you recommend this to charge a 6 V 4.5 Ah battery? Thanks a lot
Felix Vargas during emergency.Otherwise uses a 12V charger or 2 12V bulbs in series with the charger.
creative electron7m Thanks, in this case what is the time of charging the 6 V 4.5 AH battery?
Bro how to make 12v 7amh battery to 12v 3amh ?? Please let me know
Laptop charger after the Pelling wire.. there is not red or Black wire...ther is something colour wire . I mean how can I fine .. positive or nagitive... please reply me..thanks
Use an electric tester screwdriver
@@anonymousjohn254 okok
Use meter
Why did my bulb turned off after a while and all the voltage went straight to the battery?
Your battery has higher internal resistance
Thank you
Can I change 12v 7 ah batter in how many hours
I have a Samsung laptop charger which has an output of 14.0v can I connect directly
yes
What's the output current.....?
What volt blub use ???
12v incandescent bulb
Can 15v be use
Yes. But make sure you stop charging when open circuit voltage of battery stabilizes at around 14.5V.
But my charger has three wires. Please give me a solution.
colours
Use only the red(+) and black(-)
HP printer adopter: voltage=15v and Ampere =533mA . Can i used this adopter as a car battery charger ?? Plz reply.
yes sure
No
Atleast 1.5 ampere need to charge
@@nitishkuanr1673 not like that this charges the battery but slowly
Can i use a PSU fan or 5V bulb ?
I just check it and my psu dc fan fused or its motor dead
Please help, my charger have 3 wires, (White, black, blue)
Thanks did that with a modem As i had a 20v charger and modem takes 7 volts
It's not working 😭 please advise what's the reason
Who to change 12 v to 4 v and 8 v
Hi, Can I run the 12v Dc fan throgh 19 v charger. Is it working or burn my fan? pls do the needful.
The fan would most likely have trouble operating properly without special 12v regulation circuitry
Can I use Samsung led adapter(19v 1.7A) to bike battery charging..
sure
please make a video....how to charge 12 volt to laptop....
My laptop adapter doesn't have red and black wire what to do
wats th colour then ???
Use an electric tester screwdriver and see which wire power is coming from then ✌🏼
Sir I connect all correct, but bulb power is going to decrease within 20 minutes , solution please sir
Can i charge 12v 4s lithium battery?
yes
Bulb kitne what ka Hai bro
i have here a 20v laptop charger, what lamp I can use? please help :)
my 12v 8 amp battary ful ded, can I tray? is this work?
yesss !! which country are you from ???
@@MrElectron Bangladesh
@@MrElectron my battary not holding charge, and fully ded for thunderisom
ok
put some rain water in it
Im getting 11 volts from 19v laptop charger when I connect to 7ah battery
Man,the bulb is not glowing and voltage is still 19 volts
it means your battery is dead or there is no acid in it.
Ohhk
So i gotta make distilled water
Can you suggest an easy to make it
use rain water or sulphuric acid dilute from some shop.That should work.
Ok,thanks
@@MrElectron can I use a12 volt transform and the laptop charger and connect to battery.
Can we use a led 12v light
Yes but charging will be slow
nobody is giving emphasis of charging with respect to so gravity of battery acid
So what if the added light bulb doesn't illuminate or draw and the output dc voltage remains 19.4?
I charge directly without bulb 15 minutes success
How do you make the charger stop charging once the battery is full? That regulation is normally done by the laptop, not the charger right? Thanks for the vid!
charger and battrey heat ho raha he
Cool !!
(Pra quem é BR ou fala português)
Pessoal faço projetos relacionados a eletrônica ,dentre outros .
thanks!
The battery full charge is not 14.2 it is 12 .6
Very nice video
Thanks!!!!!!!!
thinks very good 👍
i tried a car-bulb, it drew 8V, leaving 11.5 for battery, so no use. I then used 2-wheeler bulb, it fused. I think the laptop-charger's -ve should goto to bulb & then battery in series. If the laptop-charger's +ve goes to bulb & then battery, then the bulb can fuse.
No relation to bulb being on -ve or +ve .Check the voltage and wattage specification of bulb .
Car bulbs are normally 12v and bike is 6 v .
Try out lower wattage car bulb to get required charging voltage .Bike bulb might hv fused because it is 6v
If use 12volt adaptat it's ok
No
Bro i didn't have voltmeter.then how much time should i wait approximately for it to charge fully as now it has drained to very low charge.
Laptop charger 24v isn't
I have 12volts laptop charger no need light for charging because exactly 12,,volt my charger
Which bulb to use ??
any 12v bulb.. Bigger the better
Thanks.. God bless
:)
What do you mean bigger bulb is better?do you mean the bigger the bulb the more ampere it will produce?
Use motorcycle bulb12
i don,t have bulb, and i tried to find but fail. can i use 12 v DC fan instead of bulb for 19V Laptop charger to charge my battery? please reply...
Sure but charging will be slower
Yes but i think low voltage is like torture for motors it will heat up too quick.
12.6 is full not 14.3! even your title says so
Ampear kam nahi hote hai na
Instead used buck converter step down dc to dc XL 4015 5amp
Nyc, from India
Nice video
I am listening to a man in his 40's asking a man in his 50's how to charge his motorcycle battery with a toggle switch and a 12v ac adaptor the conversation has went on for an 1 1/2 mean while I feel like saying look on you tube you dummy so tell me how to jump a motorcycle battery with a laptop charger or does he need a dc adapter
Very confusing.
bro it's work
Not working