Questions tagged [charger]

A device which controls the voltage and current being delivered to a capacitor or battery.

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-3
votes
1answer
60 views

Iphone Lightning Charger - How would one go about it? [closed]

Hello, im completely new to EE, but im doing my best to learn. For a starter, i want to make a device that can charge an iphone with a battery pack. Ive read up a little, and i think this would work, ...
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2answers
66 views

Speed up charging

Is there a way to create changing magnetic field that goes from positive to zero and then back to positive, regarding a sinusoidal wave. The purpose of this is to induce a coil of wire to move in ...
-3
votes
1answer
3k views

How high charging temperature causes damage to AA size NiMH cell

I used a portable thermometer and put on top of a battery charger. I notice that the temperature reach 39 degree Celsius and I can feel the warmth when I put my hand on top of the charger & the ...
-4
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4answers
30k views

Can a phone charger be adapted to charge a laptop battery? [closed]

I've obtained a laptop that has no charger. Short of buying another charger online, can a phone charger be adapted to charge the laptop's battery, provided it's disconnected from the laptop (i.e., the ...
-4
votes
3answers
39 views

Can i charge 18650 li ion battery by using transformerless power supply?

My question is very simple, can i charge 18650 li-ion cell by using transformer-less power supply. this transformer-less power supply convert AC current to DC current by using just capacitor, resistor ...
-4
votes
1answer
117 views

Hack smartphone IC to draw more current and allow higher voltages? [closed]

Disclaimer: This is just a laboratory experiment I am willing to do at my own risk. I understand the risk of blowing up the phone (GT-S5280) pr charger (Powstro 30W charger). I already have a water ...
-4
votes
1answer
160 views

What if i charge a battery with low ampere.? [closed]

Assuming we have a mobile battery and a charger which has less ampere than the original one. Is it damage the battery? if i charge with less ampere charger than the original one. i am asking for just ...
-5
votes
2answers
172 views

Calculate ampere using volt? [closed]

Can we calculate the output ampere of a battery charger by calculating battery voltage over time: 1. Get volt value name it volt1 2. Wait a second 3. Measure volt again name it volt2 So would the ...
-6
votes
1answer
77 views

Switching + and - on phone charger, will it harm my phone? [closed]

I'm working on a small project and I wanna know what will happen if I plug my phone into a charger with a cable that I cut and soldered again, but soldered the + wire to - and the - to +? will it ...
-7
votes
1answer
366 views

Prong broken in outlet. Will it still work? [duplicate]

So one of the two prongs for my laptop charger broke in the outlet. If I were to plug my charger into the outlet and turn it on, would it still charge my laptop? Is this safe? Here's how the head of ...
-7
votes
1answer
221 views

can i plug 2.5A cord to 120W 6.32 19V AC adapter [closed]

I bought An asus charger for my laptop 120W 6.32 19V AC adapter, it cam with out AC plug, i got a plug from a regular charger with 2.5A ~250V. will this affect the power going to the AC adapter since ...

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