One concern I have with these things is that device can be built in a way where the batteries can be replaced, but there may not be any batteries available for the device when it's old enough to require a new one.
Standardized batteries could really help with that, but with small devices often the batteries are custom built.
For controllers and small devices like this, they could just go with standard AA batteries like Xbox's.
I'm not sure if the manufacturer will be required to make the replacement batteries themselves. For older laptops, you could buy an external battery from a 3rd-party which worked just fine.
Technology@kbin.social – 15 points – 
One concern I have with these things is that device can be built in a way where the batteries can be replaced, but there may not be any batteries available for the device when it's old enough to require a new one.
Standardized batteries could really help with that, but with small devices often the batteries are custom built.
For controllers and small devices like this, they could just go with standard AA batteries like Xbox's.
I'm not sure if the manufacturer will be required to make the replacement batteries themselves. For older laptops, you could buy an external battery from a 3rd-party which worked just fine.