[Looking for opinions] Any Wireless Charging Amateurs? Need Your Feedback!

[anon(9857678)]

Can someone give me some feedback related to BATTERY LIFE in terms of wired vs wireless charging (fast charging disabled)?

I already know that fast charging CAN reduce battery life. Do we have any info on wireless charging? Since it's an inductive charging, some part of it's energy it's released as heat (not used for charging) and I think it SHOULD affect the battery.

The wireless charger I bought is a Wireless Qi Fast Charge Standing Samsung EP-N5100 with fans incorporated to reduce the heating. (Yeah, I use it on a compatible Samsung smartphone)

I made the mistake to have the fast charge active for some time (didn't know it was active by default), but I only charge it from 40 to 80 so I hope no less damage has been done. Since I plan to keep the phone for a while (I doubt I'll switch in 2 years), I want to try and be careful with the battery.

 

[andrew_ackley]

I would just Google it I don't think it makes a big difference.

 

[claykin]

you're concerned that the inefficiency (heat) from wireless charging will reduce the available number of charge cycles of your battery?

 

[anon(9857678)]

I would just Google it I don't think it makes a big difference.

I did. And I found different ideas. I'm trying to conclude now.

you're concerned that the inefficiency (heat) from wireless charging will reduce the available number of charge cycles of your battery?

That is correct!

 

[claykin]

Just 4u I did a non scientific test tonight using my s9+. Each test ran for 20 minutes. Baseline is phone at rest with all apps closed.

Fast cable charging raised temp 3F.

Fast wireless charging raised temp 15F. (Using 2018 Samsung fast charger)

Slow wireless charging raised temp 11F. (Same charger, not using supplied power supply, forcing slow charging)

 

[rimz808]

if someone could explain the difference. I noticed there is an option to turn on or off wireless fast charging. if I only wireless charge over night, should I turn this off?

thank you

 

[anon(9857678)]

Just 4u I did a non scientific test tonight using my s9+. Each test ran for 20 minutes. Baseline is phone at rest with all apps closed.

Fast cable charging raised temp 3F.

Fast wireless charging raised temp 15F. (Using 2018 Samsung fast charger)

Slow wireless charging raised temp 11F. (Same charger, not using supplied power supply, forcing slow charging)

So wireless charging, no matter if it's slow or fast, wears the battery more than charging through cable. Thanks!

if someone could explain the difference. I noticed there is an option to turn on or off wireless fast charging. if I only wireless charge over night, should I turn this off?

thank you

It depends. Wireless charging is an inductive type of charge. Only 60-70% of the power is used for charging, the rest is tranaformed into heat, which affects tur battery life. How much? I want to know too. The wireless charger has some fans included, to reduce the heat.

Fast charging needs more power than slow charging. Meaning the battery gets more hot, putting stress on the battery. Again, how much does this wear it off, no idea.

Going strictly by theory, the safest ranking is: slow charging > fast charging > wireless slow > wireless fast.

Now I don't know if the phone wears off after a year or two or four. My gf has a samsung that has been fast charged and after around one year and something of using it, she noticed the battery capacity degradation.

Samsunt claimed that thr battery capacity loss per year (using fast charge, I assume) was 20% for S7 and 5% for S8. How true this is, again, no idea.

As for letting it on during the night, according to Battery University, it's not really recommended. This depends if the charger turns off at 100%. Even without taking this into account, BU claims that the phone should be charged on smaller intervals to get more charging cycles, the most "recommended" and "practicle" one being from 40% to 80%. What hurts the battery the most, in their opinion is letting it drain until 0% or getting too close to 100%.

I don't know the impact of these on the new gen batteries. This is what I'm trying to find out now. Hope I cleared things up a bit.

 

[claykin]

During my test fast wireless charging didn't get even close to the 113F top limit recommended by Battery University. I wouldn't worry so much. Batteries are finicky, and yours may or may not degrade slowly regardless of the care you take in babying it.

This is part of the reason I just upgrade every year using Tmobile JUMP.

 

[anon(9857678)]

During my test fast wireless charging didn't get even close to the 113F top limit recommended by Battery University. I wouldn't worry so much. Batteries are finicky, and yours may or may not degrade slowly regardless of the care you take in babying it.

This is part of the reason I just upgrade every year using Tmobile JUMP.

You're a hero, mate. Thanks!