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Is it ok to charge overnight?
- Thread starter peekapoo
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- htc evo 4g
D
Deleted User
Guest
Well w/ my last phone I would charge it overnight all the time even when it didnt even need it too much and it seemed like it eventually started to hurt the battery so I stopped then the battery seemed like it started getting better.
current battery technology prevents the handset from overcharging the cells. heat is a bad thing for these batteries and they have tech in them to suspend the charging process if the temps get critical.
you can keep the phone charged up all night during the day and into the next night if you want to... same tech is in laptop batteries, medical equipment, etc.. (LI-ion and the Li-Po cells)
you can keep the phone charged up all night during the day and into the next night if you want to... same tech is in laptop batteries, medical equipment, etc.. (LI-ion and the Li-Po cells)
Scott2002Z06
Lurker
As marctronixx said you can charge your phone for as long as you want, the only issue with charging overnight is that your phone will hit 100% and then even though it's still plugged into the wall it isnt charging anymore. This can cause your phone to go from 100% to around 90% in the first 10 min. of use. Easy way to fix this is when you get up just unplug the phone and plug it back in to make sure you are at a full 100% if battery life is a issue anyway.
scott you are right also. thank you for your post...
SniperDroid
Well-Known Member
I do it every night. I NEVER let it completely die though. I have always charged my phones overnight ans it has not been an issue.
damewolf13
live~laugh~love
What he said +1.
Thefoodman52
Android Expert
The battery type used in phones now don't hold a memory or anything, so really killing the battery doesn't do mich if any good. It's fine to let them sit on a charger, they have a regulator thing in them that allows for he battery to cut off charging once its full then run off of trickle charge to power the phone until you unplug it, at which point it switches to battery.
Long story short, just let the phone sit on the charger overnight and don't sweat it.
Long story short, just let the phone sit on the charger overnight and don't sweat it.
It's not bad to charge it overnight but what you will see is that your battery will drop to the low 90's within minutes as once the device is charged, it seems to stop charging and run on battery power.
To test this theory, charge your phone until the light turns green and then remove it from the charger immediately. You will then see that it will stay in the upper 90's for a few hours as opposed to the few minutes when the device is left on the charger for a while after being fully charged.
To test this theory, charge your phone until the light turns green and then remove it from the charger immediately. You will then see that it will stay in the upper 90's for a few hours as opposed to the few minutes when the device is left on the charger for a while after being fully charged.
AsItLies
Member
One way to avoid the "I forgot to charge my phone last night" problem, and the "I used my phone too much and now my batteries dead" etc etc issues would be:
1) buy a stand alone charger (seidio has them)
2) buy one or more extra batteries (have 3 for the evo)
This way you never have to tie up the phone to charge a battery. You can condition the battery (the first few charges can be like 10hrs) without any hassle. You'll always have a spare, fully charged battery available to pop in, and you can let the battery in the phone run down (or not) all you want.
It's really a simple thing, and once you start doing it that way, you'll never want to go back to only one battery, it's such a hassle.
Happy 4th!
1) buy a stand alone charger (seidio has them)
2) buy one or more extra batteries (have 3 for the evo)
This way you never have to tie up the phone to charge a battery. You can condition the battery (the first few charges can be like 10hrs) without any hassle. You'll always have a spare, fully charged battery available to pop in, and you can let the battery in the phone run down (or not) all you want.
It's really a simple thing, and once you start doing it that way, you'll never want to go back to only one battery, it's such a hassle.
Happy 4th!
There is NO reason to do that with this type of battery. Charge it whenever you want, however you want for any length of time regardless of current battery level. You can't hurt the battery.
Okay, I know that if you leave the phone ON and charge it over night it will lose some charge after it's 100 percent because it goes back to battery. But lately if I charge it over night while OFF it still drains immediately after I turn it on. If I plug it back in until it turns green battery is great. What gives?
ThatNewAndroidGuy
Android Enthusiast
You just gave yourself the answer. You said its bad for older phones, true, then you said its not a problem with newer phones and that it doesn't hurt them. Evo is a new phone
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Shift.Evolve
Newbie
Thats what i do.
Sent from my EVO using Tapatalk
Vincent Law
Android Enthusiast
Any phone made In the past ten years has the necessary protection from overcharging. If it didn't, it'd only take one night to kill it. And you would definitely hear about that all over.
htc.EVOlution
Android Expert
actually it would depend on the manufacturer. depends on what they implement and how much they care for technology. I still have some doubts because if they implemented smart charge on batteries, how would they make money selling accessories.
Vincent Law
Android Enthusiast
Uh, that is irrelevent to selling accessories. The battery would explode if it didn't have that protection. This is fact, all these phones have chips to control charging to maintain a charge without overcharging or damaging the phone or battery.
ThatNewAndroidGuy
Android Enthusiast
I have a question about this. Does it kill your battery if you leave it charged overnight (way past what it needs)? I know that this can ruin the battery life of laptops (mine is terrible) and with the short battery life as it is, I don't want to have even less. So can someone clarify this issue?
parousia15
Newbie
Yes it does. The speed with wich it goes from 100% to 95% is a matter of minutes with no use. It doesn't slow down until the high 80s. What I do is, charge it at night, when I wake up I unplug it and I start get ready for my day. After about 5 mins, I plug it back it and it takes 15mins to reach 100%. I unplug it and I'm set. It will stay at 100% for quite a while after that.
htmlcssguru
Well-Known Member
In another thread about this very issue someone posted that the phone stops using the charger when it reaches 100% and uses its own power. That's why when you unplug it in the morning it drops significantly within a few minutes. The 'green' light is a false reading of 100% when, in fact, the phone may have been working under its own power for a few hours (depending on when it actually reached the 100% during the night). Mine drops to about 92% then stabilizes. I plug it into my computer (USB port instead of wall charger) and charge it back to 100% then once unplugged it trickles down slowly and normally.
This makes sense (the use of the phone's power after charging to 100%) but i've not gotten a firm confirmation of this.
No you cannot overcharge your battery or cause damage to it by charging overnight. Today's lithium ion and lithium polymer batteries cannot be overcharged. They still degrade with use over time like all other batteries, but recharge cycles are typically in the 1000-2000 range. I think the Evo battery is rated for 1000 charges.
What will damage batteries LI batteries most is overheating.
What causes the inconsistency in battery charge and battery charge levels is the actual phone itself. While today's batteries don't have built-in recharge meters like older rechargeables, the phones still have charge meters that control everything related to the battery, including charging and power draw. The interaction is similar to how gas station pumps now work. They are pressure sensitive so that they automatically stop when the tank is "full enough." That's why they can always be topped off with short bursts of fuel even after they automatically shut off. The phone works the same way, when it's full it begins limiting charge. The reason you see an immediate drop is that it stopped charging while you were asleep and doesn't resume full charging unless unplugged and replugged.
People believe batteries can be overcharged, but overcharge would actually result in overheating, expansion, then leakage from the battery. That doesn't happen any more because LI cells don't work the same as old battery cells.
What will damage batteries LI batteries most is overheating.
What causes the inconsistency in battery charge and battery charge levels is the actual phone itself. While today's batteries don't have built-in recharge meters like older rechargeables, the phones still have charge meters that control everything related to the battery, including charging and power draw. The interaction is similar to how gas station pumps now work. They are pressure sensitive so that they automatically stop when the tank is "full enough." That's why they can always be topped off with short bursts of fuel even after they automatically shut off. The phone works the same way, when it's full it begins limiting charge. The reason you see an immediate drop is that it stopped charging while you were asleep and doesn't resume full charging unless unplugged and replugged.
People believe batteries can be overcharged, but overcharge would actually result in overheating, expansion, then leakage from the battery. That doesn't happen any more because LI cells don't work the same as old battery cells.