From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Sun, 6 Sep 2020 14:27:21 -0700
Subject: Re: [OT] Simple LiPo charging circuit
Thread-Topic: [OT] Simple LiPo charging circuit
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Hi Ryan,

It's a Pixel 3A. The charger that came with it is USB-C and says 5V3A/9V2A.=
 There is nothing in settings to alter the charge rate. It definitely is a =
fast charging phone. My previous phone, a Nexus-something, also had a high =
voltage charger, but they are incompatible and default to slow charging wit=
h the wrong charger.

The battery is supposed to be 3000mAh.

Best regards, Bob

________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Ryan O=
'Connor
Sent: Sunday, September 6, 2020 1:54 PM
To: Microcontroller discussion list - Public.
Subject: Re: [OT] Simple LiPo charging circuit

Bob, does your phone have a feature marketed as "fast charge"? As it may be
set to that mode (in software), in which case it could be negatively
impacting your battery life. It requires a fairly beefy charger of at least
~3000mAh.

Ryan

On Mon, 7 Sep 2020 at 05:34, Bob Blick  wrote:

> Hijacking the thread, I have a question about the battery in my mobile
> phone. I'm careful about charging, and want to get as many useful years o=
f
> life as possible out of the battery. I try to never let the battery get t=
oo
> low, never charge the phone if it's hot, and never let it charge fully.
> Based on the phone's gauge, I charge it when it's down to 40% and take it
> off charge when it reaches 80 or 85%. I think this is probably a pretty
> good way of doing it. I plug the charger into a timer so I don't have to
> watch it, I'm not totally OCD :)
>
> My question regards preferred charging current. The charger that came wit=
h
> the phone will do my normal charge regime in about 20 minutes. The good
> quality charger from a previous phone will take 90 minutes to do the same
> thing. Neither charger noticeably heats the phone.
>
> Which is easier on the battery, high current for a short period of time,
> or medium current for a longer time, both taking the battery from 40% to
> 80% state of charge?
>
> Thanks, Bob
>

--=20
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