[tjoff]

For your bedroom you'd really want an old 5W charger. Why turbo charge and put permanent strain on your battery when anything that takes 6+ hours will do.

[jonplackett]

Apparently (with iPhones at least) you shouldn’t have to worry about that anymore.

https://www.zdnet.com/article/can-ios-13s-optimized-battery-...

[mrpurple_]

Charging slower is always better for lion based batteries. Period

[IndrekR]

For battery lifetime -- also charging to lower voltage and stopping discharging at higher voltage. Cathode will stay intact longer this way and metallic lithium has less chance on plating the anode.

[sm4rk0]

There's an Android app for that (if the device is rooted)

https://f-droid.org/app/com.slash.batterychargelimit

[driverdan]

If it's a good quality charger it shouldn't be feeding the battery enough power to impact its lifetime.

[JshWright]

The "charger" in this case is built into the phone, the thing we call a "charger" is really just a power supply for the actual charge controller.

[adrianmonk]

A phone will charge as rapidly as it can without undue risk to the battery's longevity. But, it's still a trade-off. If you charged slower, you would decrease risk to longevity.

But when you to bed, your phone doesn't know that rapid charging convenience doesn't matter. So it will still make the same trade-off. If you use a less-powerful charger, you can force it to take its time in charging.

[kalleboo]

> But when you to bed, your phone doesn't know that rapid charging convenience doesn't matter

iPhones now know that you're going to bed and adjusts the charging to match https://support.apple.com/en-us/HT210512

I believe some Android phones have had the same feature for years now, dunno about the base android OS

[starky]

While charging circuits are much smarter now, and the difference might be minimal, you want lower charging currents to minimize the amount of damage that is done to the materials in the battery. It is universal that higher charge rates cause more damage to the crystal structure that holds the lithium ions.

[dmix]

Does this mean using one of the bigger brick 15in MacBook Pro charger on a 11in MacBook (both USB c) is bad for the smaller MacBooks charger? My gf always uses mind when she can’t find hers...

[starky]

That isn't a problem at all, a charging circuit will be designed to only take as much power as the device can receive.

[IndrekR]

That is controlled in the phone, not in the charger.