Is it a bad habit to charge overnight?

[FoxKat]

There is no need to train smartphone batteries. They are not like the old batteries. The exception is to charge it the first time for like 15 hours. Search it on google and you will find more information on it.

I believe you misunderstood...I never suggested training the "Batteries", I detailed training the "Metering and Charging" system.

I am well aware of the fact that Lithium Ion based batteries have no "memory", and that they are able to take a charge to their maximum rated capacity straight out of the manufacturing facility, therefore there is no reason nor benefit to "condition" the battery as it were.

As for how long they can be charged for, unless you are limiting the charge rate to something ridiculously low, like C.07 (3300mAh/15 hours/3300mAh=C.066E2), 15 hours will potentially cook the battery into a thermal runaway and cause it to fail catastrophically. The charge rate of a typical consumer Li-ion battery is between 0.5 and 1C in Stage 1, and the charge time is about three hours. If you were to extend that to 15 hours, you would essentially have "trickle charged" the battery for upwards of 12 hours, and LI batteries can not stand trickle charging once their rated capacity has been reached.

Charging Lithium-Ion Batteries

As it is, these phones won't allow the battery to be charged beyond the point they reach 100% anyway (3 hours for the RAZR, 5.5 hours for the MAXX), so leaving it on charge for beyond the 100% mark is for the most part waste of energy. The charging system shuts down once the battery reaches 100%, and then stands by waiting for it to deplete to 90%, at which time it resumes charging to 100% and then shuts down and the whole process repeats itself.

[ultra09hd]

I've always run mine down to 30% and even till it shuts down. Plug it up overnight. Even sometimes doing the same during the day due to my usage, even charging constantly while running several apps when I'm riding all day. I'm not seeing any issues with performance, capacity, heat, charge times, running times, etc. This is only my real world testing. Where's you're results from following what you say and how do those compare to the opposite? Spec sheets and data charts ( of anykind) are put together under the most perfect of conditions and rarely show real world usage stats.

sent from a RAZR on a Harley!

[FoxKat]

I've always run mine down to 30% and even till it shuts down. Plug it up overnight. Even sometimes doing the same during the day due to my usage, even charging constantly while running several apps when I'm riding all day. I'm not seeing any issues with performance, capacity, heat, charge times, running times, etc. This is only my real world testing. Where's you're results from following what you say and how do those compare to the opposite? Spec sheets and data charts ( of anykind) are put together under the most perfect of conditions and rarely show real world usage stats.

sent from a RAZR on a Harley!

Bring plugged into a charger all day, and "charging" all day are two entirely different things when talking about LI batteries, since the chargers monitor the charge state and interrupt charging once the battery is completely charged. You will know this if you look at the battery icon. If it has a lightning bolt, its charging, if it doesn't, it isn't.

The link I provided above is to quite possibly the world most knowledgeable battery expert corporation, and there are all the charts and specs you could need.

And again I will say that in order to get the "real world" stats you desire we would have to wait for the duration of the expected lifespan of these batteries to have passed before we could compile that data. So if you wish to wait around for another year and a half to two years to find out, great. Let me know how it works for you and I'll do the same for me.

Sent from my DROID RAZR using Tapatalk 2

[ultra09hd]

Right. But overcharging is protected by the both the charger and phones. Since lipos have no memory...why do you keep posting your so called training method?

sent from a RAZR on a Harley!

[FoxKat]

Right. But overcharging is protected by the both the charger and phones. Since lipos have no memory...why do you keep posting your so called training method?

sent from a RAZR on a Harley!

Again and for the last time, it has nothing to do with "training" the battery since the battery will only hold what it can hold safely, but instead has everything to do with training the meter.

Sent from my DROID RAZR using Tapatalk 2

[ultra09hd]

Right. But the meter being off as you've said has nothing really to do with the batteries actual level or capacity. Only the the meter is wrong. But what meter are u using? An app? A built in app meter like fancy Widgets? If there's one on stock phone I've not seen it. Only info I seen is what's in settings for battery.

sent from a RAZR on a Harley!

[FoxKat]

Right. But overcharging is protected by the both the charger and phones. Since lipos have no memory...why do you keep posting your so called training method?

sent from a RAZR on a Harley!

And the "charger" (if we're talking about the charging block plugged into the wall) plays NO role in protecting the battery from overcharge. The PHONE has a charging and monitoring system in it that both monitors and regulates the charging rate, and also determines the condition of the battery and at what point it is fully charged, where in the charge and discharge curve it is at any one time, when the battery has reached the minimum levels where the manufacturer suggests you implement charging, and at what level the battery can no longer continue to support the phone without risking deep discharging.

Also the battery itself (if a smart battery) will have its own protection circuitry built into the battery package, which monitors the battery for conditions which could create risk and damage to the battery, and this circuitry has the ability to interrupt the electrical connection between the battery and the world around it so that the battery is protected from undue risk and potential self-destruction.

So it is more accurate to say the phone's charging and monitoring (metering) system and the battery itself protect it from overcharge. I was simply stating the extreme regarding the comment about charging for 15 hours to prove a point. You can actually leave this phone on the charger for 24 hours per day, 7 days a week, constantly connected to mains and do no major harm to the battery. It will over time accelerate the aging process due to keeping the battery's voltages near or at their recommended maximum (4.2V typically), but as long as the protection circuits are functioning normally, the battery will not "overcharge". What I WAS saying is that there is no BENEFIT to charging for 15 hours, and in fact the battery is fully charged (stage 2 saturation charge) in about 3-5 hours (3 for the RAZR, 5.5 for the MAXX). Anything beyond will simply cause the charging system to be sitting in a wait state until if and when it determines the battery needs a slight replenishing to put it back to 100% of capacity again.

[ultra09hd]

Sooo. Instead of posting ridiculous long paragraphs of info that doesn't really pertain to the simple answer...which is doing nothing more than confusing the hell out of most...just say ' nope. It won't harm your battery at all' and be done?

sent from a RAZR on a Harley!

[FoxKat]

Right. But the meter being off as you've said has nothing really to do with the batteries actual level or capacity. Only the the meter is wrong. But what meter are u using? An app? A built in app meter like fancy Widgets? If there's one on stock phone I've not seen it. Only info I seen is what's in settings for battery.

sent from a RAZR on a Harley!

We are in agreement on all points so far, any apparent disagreement is simply a slight communication gap between you and I, and it's probably my fault. The meter has nothing to do with the battery's capacity, however it certainly has something - everything to do with its charge level since it's the charger that dictates when the battery gets a charge and when it no longer needs charging.

As for the "meter", we're not talking about a meter in the truest sense of the word for the end user, but more of a "battery health" system that is monitoring not only the battery's voltages, but also its current draw, its temperature, and its charge and discharge "curves" (or signature) do determine when it is either nearing or has reached minimum or maximum thresholds. Where the error in the meter begins to affect the battery's charge levels and performance - both short and long term is when it becomes diverged from the actual levels and instead represents the battery's charge level or capacity to be different than it actually is. It's during those times that damage can be caused to the battery - not due to user error but due to meter error, and it's those times that a METER "training" will put things back into alignment and allow the meter to more accurately determine those thresholds and alert the user or the charging system as to when it's time to either start charging or stop, or to end the discharge cycle.

If it's working properly, you will see no ill effects, but if it's out of calibration to the battery, you can see lots of problems and many have been "real world" demonstrated by users, such as the one whose battery meter on the phone was telling her the battery had 5% left...for 8 hours while it was playing music constantly. We all know this battery couldn't put out power to carry the phone, memory, speaker output, etc., for 8 hours with only 5% remaining...maybe 8 minutes, but not 8 hours. Others have described where the meter said the phone had 50% or 60% remaining, only to have it shut down and become unresponsive to the power button or the charger in just a short time later. In those cases, the meter believed the battery had far MORE power left than it did, but suddenly reached the end of the remaining power and when it shut down it had actually used more power than it should have, causing it to deep discharge.

[FunN4Lo]

I have had a smart phone since their invention. (windows before iPhone) and then the OG Droid at inception and now a Bionic. I have always charged over night. Some days I run until it nearly shuts down from bat drain. Some days I go down to 60-70% and charge back up multiple times a day. It just depends on access to a charger. I have never had a battery failure. I have never had a time when a bat only last a few hours. I have always done the new every 2 years on VZW, but I still have my OG Driod beyond 2 years. My daughter used it for a while and now it is a iproid (ha! A Driod iPod)