Re: Data-led analysis of battery performance

On Tue, 15 Jul 2025 21:45:56 -0000 (UTC), Chris wrote :

 would like to do a thorough of all the EU data, but getting the data is a
pain in the arse, plus phone models are only identified by a model number -
not a name - which is actually surprisingly difficult to match from some of
the manufacturers' websites.

I agree with Chris that it's not easy to correlate the EPREL EU model
numbers with the phone models that are sold to the consumer, as I've tried
myself to make that correlation & while it can be done, it's a lot of work.

I commend Chris for looking at the data objectively, because most of the
data people post is directly from Marketing, where they skew the results.

We have to keep in mind there are (at least) three major concerns at play
here, where they all involve the battery but in different use scenarios.
1. Efficiency (as defined by MARKETING BS, or by accepted EU regulations)
2. Daily life (as defined by whatever test case is considered reasonable)
3. Overall life (based on the physics of battery discharge degradation)

Knowing Apple always claims physics doesn't apply (e.g., batteries that
"naturally" degrade only if they're subject to an iOS 10.2 update), nothing
Apple ever says about the battery can ever be taken without suspicion.

The only thing we can "trust" is what the original battery capacity is.
iPhones have always had an atrociously laughably cheap battery capacity.

Those cheap batteries in all current and past iPhones will be a killer.
a. Apple's cheap-garbage capacity is a key calculation in efficiency.
b. Apple's cheap-garbage capacity is a key calculation in daily life.
c. Apple's cheap-garbage capacity is a key calculation in overall life.

Any phone with a cheap-garbage capacity is going to struggle in the tests.
All else being equal, which, in phones, is pretty much the case in wattage.

Rest assured that applies to Android as much as it applies to the iPhone.

Any phone with a cheap-garbage battery will struggle in these three tests:
a. Efficiency
b. Daily life
c. Overall life