Charging

[Danny Long2]

Evening. Hoping someone can help. Just ordered an S10 plus (hopefully a good choice) and I'm a bit confused with the "fast" charging.

Do I need to buy a special charger or is it in the box? Coming from Huawei I know it's not going to be very good but want to get the fastest I can out of it.
Thanks.

 

[fuzzylumpkin]

Fast charger is in the box.

It seems to charge a little bit faster (and cooler) with a USB-PD charger, but that's just based on my own testing, and not to the point where it's worth buying one if you don't have one already.

 

[Rukbat]

Fast charging runs between about 40% and 70%. Below 40% (which you should never do anyway - minimum you should let it drop is to 45%*) and above 70%, you get a normal charge. (Fast charging an almost fully charged battery can heat it to dangerous levels.)

*Lithium batteries are not deep discharge batteries, they're light and they can be made in thin packages, but they don't last long if you deep-discharge them.

 

[Danny Long2]

Thanks. This Huawei phone literally goes up in front of your eyes! I mean you can see the percentage going up!

Otherwise is this Samsung decent? I just got the OnePlus 7 pro Saturday but sending it back, can't live without the always on display! I know it sounds a minor point but it's so annoying not having it

 

[fuzzylumpkin]

Fast charging runs between about 40% and 70%. Below 40% (which you should never do anyway - minimum you should let it drop is to 45%*) and above 70%, you get a normal charge. (Fast charging an almost fully charged battery can heat it to dangerous levels.)

*Lithium batteries are not deep discharge batteries, they're light and they can be made in thin packages, but they don't last long if you deep-discharge them.

Wrong again Rukbat old chum. Fast charming definitely does work below 40%. In fact, that's when it's fastest.

OP, of course it's a decent phone. It's one of the best on the market. Whether it's the right phone for you is a different question that only you can answer, though.

 

[Mike Dee]

Wrong again Rukbat old chum. Fast charming definitely does work below 40%. In fact, that's when it's fastest.

OP, of course it's a decent phone. It's one of the best on the market. Whether it's the right phone for you is a different question that only you can answer, though.

He didn't say it doesn't fast charge below 40%. He was suggesting not to let it drop that low.

 

[fuzzylumpkin]

He didn't say it doesn't fast charge below 40%. He was suggesting not to let it drop that low.

Reading comprehension fail.

Rukbat clearly stated that below 40% charging speed is normal. This is incorrect.

 

[Rukbat]

Wrong again Rukbat old chum. Fast charming definitely does work below 40%. In fact, that's when it's fastest.

https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries Figure 1. Lithum charging raises the voltage fastest at the beginning of the charge (the constant current phase) - that's not fast charging, that's just how the battery voltage rises during constant current charging - fast at the beginning.

Look at the "Quickest Charging Standard" at https://www.xda-developers.com/charging-comparison-oneplus-huawei/ Samsung Power Delivery doesn't change "percentage per minute" anywhere through the range - the battery just charges faster at the beginning.

 

[fuzzylumpkin]

https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries Figure 1. Lithum charging raises the voltage fastest at the beginning of the charge (the constant current phase) - that's not fast charging, that's just how the battery voltage rises during constant current charging - fast at the beginning.

Look at the "Quickest Charging Standard" at https://www.xda-developers.com/charging-comparison-oneplus-huawei/ Samsung Power Delivery doesn't change "percentage per minute" anywhere through the range - the battery just charges faster at the beginning.

So faster charging isn't fast charging?

Seems to me you're trying to use semantics to wiggle our of the fact you said something incorrect...

 

[Rukbat]

So faster charging isn't fast charging?

All lithium batteries charge faster at the left end of the curve - that's not what's meant by quick charging. So no, faster (one meaning) charging isn't fast (a different meaning) charging.

Seems to me you're trying to use semantics to wiggle our of the fact you said something incorrect...

Below 40%, it's normal for a lithium battery to charge faster than it does in the 40% to 70% area unless you use a fast charger.

Spend a few years learning about battery charge characteristics, the way I did, and you'll understand.

 

[fuzzylumpkin]

All lithium batteries charge faster at the left end of the curve - that's not what's meant by quick charging. So no, faster (one meaning) charging isn't fast (a different meaning) charging.

Below 40%, it's normal for a lithium battery to charge faster than it does in the 40% to 70% area unless you use a fast charger.

Spend a few years learning about battery charge characteristics, the way I did, and you'll understand.

Authority fallacy aside, the point of fast charging is that it charges fast.

You can bang on telling me things i already know about lithium cells all day, but the point is that if the input charger provides 10 Watts you can be as far left of the charging curve as you want but you're not going to charge any faster without a fast charger.

You should also note I'm saying fast charge and not Fast Charge.

 

[Golfdriver97]

Thanks. This Huawei phone literally goes up in front of your eyes! I mean you can see the percentage going up!

Otherwise is this Samsung decent? I just got the OnePlus 7 pro Saturday but sending it back, can't live without the always on display! I know it sounds a minor point but it's so annoying not having it

Are you charging with the stock charger? How is it going for you?