Non-removable batteries and non-standard size mobile batteries anger me the most, because there are lots of perfectly functional devices that are abandoned just because they don't hold a charge any more.
The first mobile devices (like Walkmans etc) used to use standard replaceable batteries like AA size, so this never happened before.
If there could be some legally mandated standard mobile battery, we would have a lot less electronic waste and save a lot of money.
On devices that already cost hundreds of euros, the additional percentage cost of battery covers/connectors must be close to zero.
Standardized batteries across the board? I'm not sure we're there yet. Battery life and charging speed are still things the industry is trying to improve, and if we lock in a particular size/shape/etc., I can imagine that making it harder to make better batteries for the next generation of devices.
Not necessarily one size/shape, but a narrow range of open standard sizes, a bit like the modern mobile equivalent of AA / AAA / C / D batteries.
An added advantage of this would be a good market for third party companies like duracell etc to make reliable replacement batteries, instead of having to rely on some knock-off from ebay which may explode.
Laptops with removable batteries all(?) use the same cells inside them and can be replaced if you're handy enough. The race for thinner and thinner devices is lost on people who buy a phone and then buy a case. Last statistic I heard was 57% of people are using a phone with a cracked screen.
My nexus 4's screen is still unbroken, but the battery doesn't hold a charge and 8 GB of storage is on the smaller size.
Why would having standard battery sizes prevent device development?
The only reason manufacturers have weird sizes now is to lock down consumers into buying new devices prematurely, or to make money from extremely overpriced part replacements.
The Walkman (the first really significant mobile device) used standard size batteries, so did the first PDAs.
In fact all portable electronics used to use standard sizes until the mobile phone era.
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