I know these are currently out of fashion but I’m still thankful they exist.
Let’s remind ourselves of devices that use(d) these standardized batteries:
Toys
Digital cameras
Torches
Gadgets like fans
Wireless keyboards
TV remotes
Thanks to having a standardized system of batteries,
You can use the same battery across several devices. This is a no brainer but it’s very practical.
Batteries can charge quicker thanks to being put in a dedicated charger and not being limited by USB cables. (But yes I concede that USB has been updated for faster charging over the years)
Devices don’t have down time when their battery is charging. To charge, the battery is removed from the device and can immediately be replaced with a fresh one.
You’ll never have to trash a device due to an expired battery. Just buy a replacement. And building on this…
Any improvements in future battery technology can be retro-fitted into your existing devices. And there is a high incentive for future improvement, because…
An accessible (due to easy replacement) and large (due to many devices) battery market is very attractive to competition.
If you look at the pros I listed, they all happen to be things that would be very useful for electric cars. So I think it would aid the adoption of electric cars if their batteries were standardized too.
If you look at the battery pack, you’ll see that its a large number of C cells bound together into rods and then into a “brick” of a battery that then looks like:
That’s true for kinda sorta everything? Battery manufacturers don’t want to have to deal with creating a bunch of custom battery runs, so they end up standardizing and higher level manufacturers buy from there. This is especially true in situations where space isn’t at an absolute premium (like it is in a phone). Open up the battery pack for your cordless drill and you’ll find very standard batteries inside there, probably hooked up in series to get to the desired voltage.
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The single battery cells in electric cars are pretty much already standardized in size, just the assemblies and cooling systems are not.
(Linking for the pictures - not the site)
https://yesapower.en.alibaba.com/product/60802489471-807064733/14_4v_new_auto_cell_ni_mh_6500mah_car_battery_pack_for_honda_civic_2008_hybrid_battery_ima_replacement_hybrid_car_battery.html
If you look at the battery pack, you’ll see that its a large number of C cells bound together into rods and then into a “brick” of a battery that then looks like:
https://www.sciencephoto.com/media/623772/view/honda-insight-battery-pack
You’ll see a similar setup for a Prius (note this is updated from the older ‘prismatic’ modules): https://electronhybridsolution.com/product/toyota-prius-v-2012-2017-hybrid-battery-rebuild-kit-with-brand-new-cylindrical-cells/
That’s true for kinda sorta everything? Battery manufacturers don’t want to have to deal with creating a bunch of custom battery runs, so they end up standardizing and higher level manufacturers buy from there. This is especially true in situations where space isn’t at an absolute premium (like it is in a phone). Open up the battery pack for your cordless drill and you’ll find very standard batteries inside there, probably hooked up in series to get to the desired voltage.