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iPad Battery life

J

jodorowsky00

macrumors regular
Original poster
Feb 28, 2010
185
0
Ok i use the ipad diffrently than most people, while i work i have it net o me plued to the usb so its powered by the cable and when i leave the desk i take it with me but as soon as i return i connect it back again.

My question is will it lower my battery cycles if i keep on plugging it to the usb in my mac pro? or should i use it like a cell phone charge it during the night and use it during the day?

Any battery experts?
 
I just charge it over night. The battery lasts 10 hours, I don't see why you would need to keep replugging it in. Unless you don't like to sleep at night.
 
Maaz said:
I just charge it over night. The battery lasts 10 hours, I don't see why you would need to keep replugging it in. Unless you don't like to sleep at night.
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its because im always working so its at my desk and i think i might as well plug it.
 
Maaz said:
Yeah I could see why you would contemplate that. But honestly i would just plug it in overnight.
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Ok, i remeber i had macbook pro and was plugged all day i never unplugged it and after 2 years no juice and i dont want my ipad to die so quick.
 
You are plugging it into the computer? That charging is nearly non-existent.

I love this battery. I would have to be using it the entire time I am awake to drain the darn thing. I always plugged my iPhone in at night so this has taken its place with that habit.
 
Zepaw said:
You are plugging it into the computer? That charging is nearly non-existent.

I love this battery. I would have to be using it the entire time I am awake to drain the darn thing. I always plugged my iPhone in at night so this has taken its place with that habit.[/QUOTE
sometimes i plug it to the wall and stream videos.
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I've read somewhere that every time you give your iPhone a full charge, you'd be shaving 5 minutes out of it's total batterylife.

For the ipad, which has like 10 times the capacity of an iphone, how many times do you have to fullcharge it to shave it to 5 hours or less?
 
spammerhamster said:
I've read somewhere that every time you give your iPhone a full charge, you'd be shaving 5 minutes out of it's total batterylife.

For the ipad, which has like 10 times the capacity of an iphone, how many times do you have to fullcharge it to shave it to 5 hours or less?
Click to expand...

when i go to a meeting i have i there for 2 hours and a soon as i get back to my desk i plug it again, for of habit.
 
PrinceDraven said:
Nobody seems to have answered the question though.
Does it damage your battery to keep the device plugged in??
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Yes. All batteries go through "wear and tear" everytime they're charged. This is inevitable. But the best thing to do is to not leave it plugged in, like OP does, because then it's constantly getting charged. batteries are meant to be uncharged from time to time
 
Make sure that you leave the battery go completely flat and leave it like that overnight at least in every two-three months!
 
ok its hard to use all the battery in a day , so should i let the battery go almost dead and then charge it say every 2 days or should i i charge it every night regardless if its dead or not.
 
kernkraft said:
Make sure that you leave the battery go completely flat and leave it like that overnight at least in every two-three months!
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Worst thing you can do to a Lithium-ion battery...

jodorowsky00 said:
ok its hard to use all the battery in a day , so should i let the battery go almost dead and then charge it say every 2 days or should i i charge it every night regardless if its dead or not.
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Charge it when it has less than 10% left. Even with 10% it still has enough juice for an hour or so.
 
spammerhamster said:
Worst thing you can do to a Lithium-ion battery...




Charge it when it has less than 10% left. Even with 10% it still has enough juice for an hour or so.
Click to expand...

One last question, how come people leave there laptop plugged for hours and they don't seem to lose battery cycles.
 
For the MBP batteries, Apple recommends that you let them go flat and place the computer into sleep mode. Once in sleep mode, you let it sit like this for about 5 hours. This calibrates the battery. Once calibrated, plug it in and charge it. Lithium Ion batteries like to be used all the time to maximize battery life.
 
spammerhamster said:
Worst thing you can do to a Lithium-ion battery...
Click to expand...

I know that the practise comes from the days of older battery types like Cadmium, but I think I read this in of of my Apple User Manuals for a Lithium powered MBP. Or a Genius might have told me...
 
kernkraft said:
Make sure that you leave the battery go completely flat and leave it like that overnight at least in every two-three months!
Click to expand...

I only know this because I race rc trucks, No no no! You never ever run a lipo battery all the way down. Run it to 5-10% and recharge ;)


"kernkraft- I know that the practise comes from the days of older battery types like Cadmium, but I think I read this in of of my Apple User Manuals for a Lithium powered MBP. Or a Genius might have told me..."

Maybe true with the mbp but that would only be because it probably has a cut-off built in. As far as hearing it from a Genius.....that doesn't surprise me : )
 
Blacklabel34 said:
I only know this because I race rc trucks, No no no! You never ever run a lipo battery all the way down. Run it to 5-10% and recharge ;)


"kernkraft- I know that the practise comes from the days of older battery types like Cadmium, but I think I read this in of of my Apple User Manuals for a Lithium powered MBP. Or a Genius might have told me..."

Maybe true with the mbp but that would only be because it probably has a cut-off built in. As far as hearing it from a Genius.....that doesn't surprise me : )
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Apples and oranges, Lithium-Ion is not the same as Lithium-Polymer, but you're right, Li-ion doesnt like to be fully discharged either. There's a very high likelyhood that the iPad wont let it be fully discharged, it will power off when the voltage drops to the minimum safe level.
 
spammerhamster said:
I've read somewhere that every time you give your iPhone a full charge, you'd be shaving 5 minutes out of it's total batterylife.

For the ipad, which has like 10 times the capacity of an iphone, how many times do you have to fullcharge it to shave it to 5 hours or less?
Click to expand...

This cant be true, since your battery would be close to no capacity in no time if every time you gave it a full charge it lost 5 minutes of battery life.

I usually charge my iPhone every night, and if this were true I'd have no battery life after a few months. 5 minutes shaved off would be an hour shaved off every 11 days. So in about 2 months you'd shave off 6 hours of battery life. That is just not happening on the majority of iPhones.
 
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