Why do batteries need to be unique for each model? Some laptop lines (e.g. Lenovo) share removable batteries among models with similar power needs. Same used to be true of phones which had removable batteries from the same phone vendor.
(There's still plenty of phones with replaceable, more-or-less standardized batteries available… but it's $50-200 phones that nobody wants to buy because they're not sexy enough. Even though they've been fast enough for years…)
4 degrees later, we are all gone. The batteries remain, for a while. In 2135 CE, the last Samsung battery too will catch fire, starting an unstoppable wildfire that will consume much of Eurasia, along with whoever survived the previous social collapse. Then, only ashes will remain.
Fuck the pandas, save ourselves.
To be fair, the lack of fucking pandas do is a major hurdle in their conservation.