My Nexus 6P died yesterday..
A new battery that I ordered for it months ago, arrived.. today.
4700mAh. If only I could've tested it.

This feels so much like it was just to rub it in a little bit further that that Nexus is gone forever.. just before I could fix the first shitstain, the second one occurred already... Fuck me :')

@RantSomeWhere probably N6 then.. the N6P is a phone that I really liked, but the issues with it aren't worth it imo. Also the fact that Huawei glued everything in.. why?

@norman70688 considering that the real capacity of the original was only some 1600mAh, most certainly!

A moment of silence for our fallen comrade. (I'm writing this on my 6P)

@ThatDannyBoy Hopefully it'll survive for longer than mine did :') regardless of whether it's a core or a storage failure (probably big cores), it'd require a new motherboard.. which I don't really feel like buying to be honest :/ it'd cost almost as much as I paid for the phone itself. And servicing it.. from what I've heard, everything being glued in makes it pure horror ._.

@vexusia just curious but I remember many people using Lemonpacks or whatever they were called, where you would add a much thicker battery and a back to go along with it for the supported devices and none of those phones had any custom kernel etc.

I don't believe you'd need a custom kernel anyway, why? you're not changing the input nor is the output of those batteries different, just the capacity and the system will just charge until a certain level is measured and all batteries I've ever come across somehow report their capacity and more to the phone.

@vexusia good point on the fake batteries.. to me it seems a bit sketchy as well, but I can't test this unit without the phone. On the charging process however, that's the same regardless of capacity. You start in constant-current mode (1A or so, but of course quick charging cranked that up at the cost of lifespan) and once you start dropping below the constant current, you continue in constant voltage (4.2V usually). Again, fast chargers are known to ignore this.. they often continue in constant current all the way, by cranking up the charging voltage beyond 4.2V. This is a process that I'd call dangerous, and it requires constant monitoring of the battery voltage.. which is pretty much impossible because during charging, the voltage at the battery terminals is that of the charger...

Anyway, lithium batteries start charging in constant current and continue in constant voltage. That's why the charging after 80% takes so long. In CV mode the current keeps on dropping, meaning less power being delivered. But that process holds true for a 2000mAh cell just as much as it does for a 10000mAh beast, or multiple paralleled cells even. So no custom kernel tweaks are required for that.

@vexusia That's a pretty crappy charge controller then. Well, considering that they ended up building this piece of shit called the Nexus 6P after that, it's kind of expected that they'd hardcode shit in... Maybe that's why their batteries all end up dying prematurely.

@vexusia There's usually only 2 connectors on Li-Po cells. One positive, and one negative. All the dozen cells that I've salvaged so far are like this. Some also have a third lead which is for temperature sensing. I guess that it's a thermistor or something like that, which allows the charge controller to know when the battery is getting too hot and do a cut-off. But there's not much to it other than that. Lithium cells are divas for sure, but they aren't some alien advanced technology. I like to call them little bags of Pixies (aka electrons), because that's all they are really.

There are communication protocols however. The batteries that I'm talking about are bare ones. But smartphone batteries (especially replaceable Li-Ion batteries) have controllers on them. My Acer phone for example has (or rather, had.. it's broken now, all I have left is its motherboard) 4 pads on its battery, positive, negative, temperature sensing and another ID pin. That last one is something that I find an absolute dick move from Acer. Those Taiwanese fuckers aren't the only ones that can make a battery.. what if I wanted to power the phone from a lab bench power supply? That doesn't have an ID, and I don't want to keep a controller alive just for the purpose of providing a voltage to the damn thing.

@vexusia True. It's a pain in the ass when manufacturers lock down their phones like this. A battery is something that will inevitably die after some time, and especially in the Nexus lineup (for whatever reason.. probably certified enganeers at Google.. or planned obsolescence). So it should be possible to replace. With a different brand, doesn't matter.. but yeah increased capacitance is likely to not fit, unless they use less space for the dielectric (which makes them less safe). Oh well... The Chinese sellers have to compete somehow, right. If it's not price, it'd probably be ridiculous capacities. That said, China is actually pretty good at producing batteries right now! I've heard from an AvE video I think, that they now export some 200k lithium cells every year.