I know it might not be for everyone, but getting dual-cell battery is easy way to solve it. I charge my device once few days (3 or more) thanks to 3Ah behemot. The difference from 1,3 Ah is astonishing, in practice.

It's because BME replacement does the same thing as those scripts did, just implement it in kernel module level instead of userspace scripts and adds things like shutting down just after edv Not to mention battery applet, that takes information from sysfs nodes created by said modules.

As for charging method from charging chip's point of view, it's exactly the same thing, though.

Not possible hardware wise. The only thing you could achieve it, is to get a power source giving stabilized voltage in between 3.3V-4.2V range, and hook it up to battery pads.

The only way you can achieve it without such mods, is by shutting down all radios, turning brightness to minimum, etc. Basically, you can't use more than ~ 50 mA, and was usable only in battery hotswap proof-of-concept (which was just that - PoF - as it was more convenient to shut device down for swapping, anyway).

/Estel