[jackbauer007]

in the users guide for the lumia 710 it says:

////////Do not leave a fully charged battery connected to a charger, as overcharging may shorten the battery’s lifetime///////

so i have to either stay up for 2 hours until it is charged, then sleep. or i can put a timer to wake up at 1 am and unplug it.

any ideas on this?? i usually always charged my phone when i sleep.

[aspergerguy]

@jackbauer007

Very strange advice as device stops accepting current when fully charged, as Lumia 710 has removable battery I would continue to leave on charge overnight and not put yourself out!

[rayhipkiss]

It's been known for quite some time now that over charging a Lithium-ion battery can damage the cells, thus reducing it's lifetime. What you can do is charge it before you go to bed so that it's fully charged for when it is bed time.

Ray.

[rayhipkiss]

---

aspergerguy wrote:

@jackbauer007

Very strange advice as device stops accepting current when fully charged, as Lumia 710 has removable battery I would continue to leave on charge overnight and not put yourself out!

---

The battery does stop accepting charge at 100% but it will start to discharge and when it reaches something like 95% to 98% will start charging again. This is known as bump charging or over charging and can damage the lifetime of the cells.

Ray.

[halobolola]

It depends on how long you intend on using/keeping your mobile.

I have, like i am sure most people, done what you do, and charge overnight, and have always done, accross all my phones, and i cant tell any battery loss. even on my n8, which i cant replace the battery, i have never thought about it.

After long periods, e.g. year, to a year and half, i can see it having a damaging effect, but not to a massive amount, maybe 5/10 min shorter life.

If you compare to the convenience of sleeping, and chargine, in my opinion its a no brainer.

[jraduga]

As Ray has mentioned bump charging can cause issues.

when Lithium based batteries were first released, it became very obvious very quickly that they had the chance (as is with many batteries) of going in to a melt down or exploding. as batteries pack in phone are made of many cells all connected, it can only take one cell to go faulty, that then starts a reaction in the pack that cause excessive heat build up, that then becomes so hot that it can cause severe burns or explode. So many years ago they started installing safer types of lithium cells called lithium ion or nowadays lithium polymer cells, they all have a small electronic circuit that controls the charge and discharge rates.

in many cases (not always) the electronic boards even count how many times the batteries are charged, once they hit a certain number they stop excepting charge, this can be as low as 250 times. However this is mainly for many of the older version of these cells.

So bump charging can shorten the life of the battery pack. As ray said it does stop charging but then if it drops enough, it will start again. So where you thought you had charged your battery once, may in effect have been charged maybe 2 or 3 times during a single night. Remember its not the amount of charge you put in, in this case but the number of charges you do.

These circuits are put in for safety reasons, and not to make you buy more of these battery packs. People have had third degree burns to their ears by the use of mobiles in the past, hence why the safety devices were put in.

[Tony_Park]

Try using one of these plug adaptors - we use them at home, and as soon as the battery is full, the power is cut.

Tony

[jimmyireland]

Its best to get into a habit of charging your phone an hour or two,or as whatever is required before bed and switch off,this is what i do and enjoy optimum battery performance ive never left a phone charging overnight.