iPhone 12 Pro Better to use 5W brick overnight to maintain battery health?

[tekchic]

I also didn't pay $60,000 for my phone, either

I'm more careful about Tesla charging mostly due to the cost of the car -- when I was commuting I only charged to 85%, and at work we had free ChargePoint chargers that were fairly slow (6.6 kWh). My home Tesla charger is just the 30A (about 5 kWh) and I still supercharge whenever I need a big charge or if it's convenient. But 100% SOC is only for long trips. Right now since it just sits in the garage mostly except for a takeout run or groceries, I keep it between 45% and 80% SOC.

My phone? Eh, I keep it 2 years, sometimes less, I charge it slow-ish for the most part, but I do keep it relatively topped off between 90-100% most of the time. Planning to tinker with Magsafe and a 20W charger, but I also have a lightning cable sticking out of my couch on a slow charger that I use during the day. I just use what's at hand, and if I needed to, I wouldn't worry about a fast charge with the USB-C cable or Magsafe.

 

[Hyloba]

My XS is down to 94% after not even a year, and I just charge it overnight with a 5W charger. I will be charging between 25-85% from now on, or with my new phone. Also, is Qi charger worse for the battery as well? I thought so with the heat, but whenever I use Qi charging the back of the phone feels warmer, but just as warm as skin temperature.

 

[tekchic]

Also, is Qi charger worse for the battery as well? I thought so with the heat, but whenever I use Qi charging the back of the phone feels warmer, but just as warm as skin temperature.

I've been using a Qi (generic) charger for the past 2 years with my XS Max for nightly charging. I've felt it warm at times, but not all the time. I also charge on a 5w "mat" in my Tesla, and then just on a 5w cable on the couch. Kind of stinks that you are at 94% after just a year. Are you draining the battery heavily daily? I tend to be over obsessive about having a high charge, but I'm still at 96% on an XS Max on 2 yrs.

 

[Tsepz]

Pros / Cons?

This is literally what I do since my Xs Max and with my current 11 Pro Max.

I have a variety of Apple chargers from 5W, 10W, 12W and 2 18W chargers, and I use the 5W overnight for my phones and only fast charge if I need to, which is rare especially now in lockdown.

It’s worked out fine, had my 11 Pro Max since early March and it’s now at 97% health and battery life still seems to last very long, I usually go to bed with a lot of juice left, right now it’s 00:05 here and I am going to bed with 27%.

 

[floriano8812]

@edhchoe
Thanks for your instruction.

My XS is down to 92% in just a year.

From now on I will charge my iPhone 12 between 25% and 80%.

It is up to 80% super fast with Anker USB C 30 W Charger.

 

[NFernoSlyr]

My 2017 release day iPhone X Battery Health is 96%, I charge every night wired 5W.

I just opened my iPhone 12 Pro I got on release day. Charged it with MagSafe puck With 20W adapter... it got a little warm. I think I won't use that for overnight charging, just quick charge.

 

[Hyloba]

I've been using a Qi (generic) charger for the past 2 years with my XS Max for nightly charging. I've felt it warm at times, but not all the time. I also charge on a 5w "mat" in my Tesla, and then just on a 5w cable on the couch. Kind of stinks that you are at 94% after just a year. Are you draining the battery heavily daily? I tend to be over obsessive about having a high charge, but I'm still at 96% on an XS Max on 2 yrs.

I drain from 100 to 20% daily, so that’s maybe the biggest factor.

 

[Homme]

Yes if you slow charge at 5w most of the time, this will reduce heat and therefore wear and tear on the battery long term.
Keep in mind that after 50% it will only use 5w (or 7.5?) anyway. It’ll only fast charge (use higher watts) when charging at 0-50% - if you want optimal battery health, keep the charge between 25% and 85% - only charge it to 100% when you know you’re going to need a full charge (day trip or night out or something). Try to avoid it going below 20%.
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After 80% no matter which iPhone is plugged into a 7.5w usb charger or higher, it will go to 5W

for fast charging iPhones after 50% in 30 minutes the wattage will go down but not 5w until 80%

 

[ACB 123]

Remember also that not all batteries are made equal. Some batteries will react to fast charging differently. All come off assembly line the same but once in a while one will be better or worst.

 

[BlueMoose]

Remember also that not all batteries are made equal. Some batteries will react to fast charging differently. All come off assembly line the same but once in a while one will be better or worst.

batteries are like girlfriends... you just never know the outcome....