Leaving the phone off for 20 days?

[Hesham Helal]

Hey all,
I have a question with regards to the battery health of the note 10 plus that I have.
Is it fine if I repeatedly keep the phone switched off and idle for 20 days at 80 percent of battery? Does that affect the health of the battery by any means.
I often find myself doing this because my line of work doesnt allow me to use phones with cameras so when I am on mission I cant get it with me.
So any suggestions on how bad could this be

 

[mustang7757]

Hey all,
I have a question with regards to the battery health of the note 10 plus that I have.
Is it fine if I repeatedly keep the phone switched off and idle for 20 days at 80 percent of battery? Does that affect the health of the battery by any means.
I often find myself doing this because my line of work doesnt allow me to use phones with cameras so when I am on mission I cant get it with me.
So any suggestions on how bad could this be

From what I hear , and seen manufacturer do is keep the battery at around 50% charged is best to preserve it .

 

[Hesham Helal]

From what I hear , and seen manufacturer do is keep the battery at around 50% charged is best to preserve it .

Thank you, I was thinking like that too, because almost always when you get a new phone the charge is above 50 percent so it does make sense. I am just worried that doing it repeatedly might affect it

 

[mustang7757]

Thank you, I was thinking like that too, because almost always when you get a new phone the charge is above 50 percent so it does make sense. I am just worried that doing it repeatedly might affect it

Your welcome!
I'm not sure if doing it repeatedly will do anything never seen anyone test that or heard anything about it but my thinking should be ok , as long as not in extreme temperatures.

 

[Mooncatt]

Keeping it at 80% is kind of on the edge of risking damage. 50-60% would be a much better storage charge level. Even better if you can keep it cool. I have seen some RC folks put their Lipo's in the refrigerator to help increase the lifespan (When a single battery pack can cost $100+, it makes sense to go to more extreme practices). If you want to learn more of the nitty gritty, this article goes into detail about this and other issues affecting battery lifespan.

https://batteryuniversity.com/index.php/learn/article/how_to_prolong_lithium_based_batteries

 

[Hesham Helal]

Keeping it at 80% is kind of on the edge of risking damage. 50-60% would be a much better storage charge level. Even better if you can keep it cool. I have seen some RC folks put their Lipo's in the refrigerator to help increase the lifespan (When a single battery pack can cost $100+, it makes sense to go to more extreme practices). If you want to learn more of the nitty gritty, this article goes into detail about this and other issues affecting battery lifespan.

https://batteryuniversity.com/index.php/learn/article/how_to_prolong_lithium_based_batteries

Thank you, the link is really useful.
But again how bad could it be leaving it at 80 percent and room temperature like the phone I keep it in my side table drawer or in the closet

 

[Mooncatt]

Thank you, the link is really useful.
But again how bad could it be leaving it at 80 percent and room temperature like the phone I keep it in my side table drawer or in the closet

Table 3 of that article can clue us in. Going by that, I'd say you wouldn't lose much life in your situation, especially if it's just until you can get back home and then use a lower charge level going forward. If you insist on using 80%, I would again refer you back to that table and suggest placing it in a sealed bag with the air sucked out, and put it in the fridge. When you get home, leave it in the bag while you let it come back up to temp. Sucking the air out and not opening it until it's warm again will prevent condensation from forming and causing water related damage.

As for any damage that may have already happened from past storage, the only way to determine that would be a proper load discharge test. This stuff all goes by averages and recommended best practices. Some batteries would fair better than others in identical situations. We can only use that info to guess at answering your specific question. I'm sure others would have different opinions than I do on this, but there's no way to tell if any of us are spot on the money.

 

[Hesham Helal]

Table 3 of that article can clue us in. Going by that, I'd say you wouldn't lose much life in your situation, especially if it's just until you can get back home and then use a lower charge level going forward. If you insist on using 80%, I would again refer you back to that table and suggest placing it in a sealed bag with the air sucked out, and put it in the fridge. When you get home, leave it in the bag while you let it come back up to temp. Sucking the air out and not opening it until it's warm again will prevent condensation from forming and causing water related damage.

As for any damage that may have already happened from past storage, the only way to determine that would be a proper load discharge test. This stuff all goes by averages and recommended best practices. Some batteries would fair better than others in identical situations. We can only use that info to guess at answering your specific question. I'm sure others would have different opinions than I do on this, but there's no way to tell if any of us are spot on the money.

Yes it's usually until i get back home which is 20 days plus minus. When I use it after I come back it acts weirdly in the beginning but then starts acting normal again and gives me 8 hrs or so SOT from full to let's day 10 percent change

 

[Rukbat]

It's not so much risking damage, but the battery self-discharges faster at 80% than it does at 50%. But if you keep the phone off (not at idle - that means on, with the screen locked, but connected to the carrier) for a month at a time, you're just extending the life of the battery a bit, not harming it at all (whether you leave it at 80% or 50%). Most of my unused phones (all old ones, on Android 5 or 6) are at somewhere between 50%-85%. I check them every few months (whenever I think of it) and bring the ones that are near 50% back to to around 80%. (I've been doing that since lithium batteries and have never had a battery last less than 4 years [and that was my daily driver for all 4 of those years - the ones on "standby" have lasted longer].)

 

[Hesham Helal]

It's not so much risking damage, but the battery self-discharges faster at 80% than it does at 50%. But if you keep the phone off (not at idle - that means on, with the screen locked, but connected to the carrier) for a month at a time, you're just extending the life of the battery a bit, not harming it at all (whether you leave it at 80% or 50%). Most of my unused phones (all old ones, on Android 5 or 6) are at somewhere between 50%-85%. I check them every few months (whenever I think of it) and bring the ones that are near 50% back to to around 80%. (I've been doing that since lithium batteries and have never had a battery last less than 4 years [and that was my daily driver for all 4 of those years - the ones on "standby" have lasted longer].)

Thank you for your reply, so that means it is completely healthy to do that? as I know leaving It on idle isnt as good as switching the phone off.

 

[Hesham Helal]

It's not so much risking damage, but the battery self-discharges faster at 80% than it does at 50%. But if you keep the phone off (not at idle - that means on, with the screen locked, but connected to the carrier) for a month at a time, you're just extending the life of the battery a bit, not harming it at all (whether you leave it at 80% or 50%). Most of my unused phones (all old ones, on Android 5 or 6) are at somewhere between 50%-85%. I check them every few months (whenever I think of it) and bring the ones that are near 50% back to to around 80%. (I've been doing that since lithium batteries and have never had a battery last less than 4 years [and that was my daily driver for all 4 of those years - the ones on "standby" have lasted longer].)

Thank you for your reply, so that means it is completely healthy to do that? as I know leaving It on idle isnt as good as switching the phone off.

 

[Hermes Hidayat]

Hey all,
I have a question with regards to the battery health of the note 10 plus that I have.
Is it fine if I repeatedly keep the phone switched off and idle for 20 days at 80 percent of battery? Does that affect the health of the battery by any means.
I often find myself doing this because my line of work doesnt allow me to use phones with cameras so when I am on mission I cant get it with me.
So any suggestions on how bad could this be

Im curious... Are you in Intelligence or Special Forces? Haha...

 

[Hesham Helal]

Im curious... Are you in Intelligence or Special Forces? Haha...

Lool, kind off yes but i am not allowed to disclose that

 

[Hermes Hidayat]

Lool, kind off yes but i am not allowed to disclose that

FSB? CIA? MOSSAD? hahahaha.

 

[Hesham Helal]

FSB? CIA? MOSSAD? hahahaha.

Nope, nope and nope cant say more than that

 

[Hermes Hidayat]

Nope, nope and nope cant say more than that

Hahaha. Be safe. God bless you.

 

[Hesham Helal]

Hahaha. Be safe. God bless you.

Thank you, you too, just watch out i might be tracking you now,

 

[Hermes Hidayat]

Thank you, you too, just watch out i might be tracking you now,

Ah, i like being tracked. So if anything happens to me you'll know xD

 

[Hesham Helal]

Ah, i like being tracked. So if anything happens to me you'll know xD

Yes if course i will