If You Know About Electrical Conduction Can You Answer This?

[OneEyedDiva]

I've noticed that sometimes when my device chargers have been plugged in for awhile, they feel very warm but sometimes they don't. Why is that? Each time they are plugged into the same dual outlet. Sometimes two are plugged up, others just one at a time.

 

[win231]

I think it's because most devices that need to be charged are automatically switched to a "Trickle Charge" or a "Stop Charge" when they reach 100% charged. That prevents overheating which can cause a fire. That feature is on my cordless phone, cell phone, rechargeable flashlights, & my battery-powered garden tools, which use rechargeable batteries. They all get warm while charging, but are cool after they're fully charged.
If any of your devices or plugs feel too hot to touch, I wouldn't use them. Some cheaper electronics & batteries don't have that feature & have melted & caused fires.

 

[OneEyedDiva]

I think it's because most devices that need to be charged are automatically switched to a "Trickle Charge" or a "Stop Charge" when they reach 100% charged. That prevents overheating which can cause a fire. That feature is on my cordless phone, cell phone, rechargeable flashlights, & my battery-powered garden tools, which use rechargeable batteries. They all get warm while charging, but are cool after they're fully charged.
If any of your devices or plugs feel too hot to touch, I wouldn't use them. Some cheaper electronics & batteries don't have that feature & have melted & caused fires.

Thank you Win. My tablet will charge to 100% every time but not my cell phone. That only reaches 100% every now and then (I can't figure that out either). I've had the phone a little longer than the tablet. So far the plugs haven't been so hot that I can't touch them. Even though I'm never worried that they'll heat up to much and cause a fire, I won't leave the tablet charging when I'm going out.

"I think it's because most devices that need to be charged are automatically switched to a "Trickle Charge" or a "Stop Charge" when they reach 100% charged." I'm going to pay more attention to when the plug feels warm and when it doesn't in relationship to the amount of charging that's taken place.

 

[win231]

Thank you Win. My tablet will charge to 100% every time but not my cell phone. That only reaches 100% every now and then (I can't figure that out either). I've had the phone a little longer than the tablet. So far the plugs haven't been so hot that I can't touch them. Even though I'm never worried that they'll heat up to much and cause a fire, I won't leave the tablet charging when I'm going out.

"I think it's because most devices that need to be charged are automatically switched to a "Trickle Charge" or a "Stop Charge" when they reach 100% charged." I'm going to pay more attention to when the plug feels warm and when it doesn't in relationship to the amount of charging that's taken place.

All my rechargeable devices have that safety feature, but I still never leave the house while they're charging. If that safety device fails & the battery & charger starts melting, I want to be there when the smoke detector goes off. I also post a little note on my front door to remind me. A couple of times I've left my EGO Hedge Trimmer battery on the charger all night when I forgot it. Luckily, those chargers not only have that safety feature, the batteries also have a built-in fan to keep the battery cool while charging.

One other note: I have some high-powered flashlights & lanterns that take rechargeable batteries. I found some less expensive batteries & started to charge them. After they were fully charged, I started taking them out of the charger & burned my fingers; they were very hot. I didn't know it at the time, but the reason those batteries were less expensive was because they didn't have that overheat protection circuitry.
If I wasn't home, the house would probably have burned down. NO MORE bargain batteries for me!

 

[timoc]

I'm not 'sigh and tiffic' like you two members above, but I do know that if I get hold of a live wire in one hand and a neutral wire in the other hand, and someone switches the power on, I get to dance like Fred Astaire.