It will be difficult at first because it is no longer in production. Look for a second hand, but will perhaps also difficult.
There is also the solution of a third-party charger on Amazon or elsewhere, but for the Evo, it has almost disappeared from catalogs now.
But you can fall back on a Dji Mavic charger which has the same charging system for the Evo1 batteries, it is enough to cut the charging socket a little so that it fits on the battery of the Evo 1.
Attention, the charger of the Mavic, first in its name, not that of the Mavic 2 nor of the 3.
You can find it on Amazon. https://www.amazon.com/TAIFU-Battery-Charger-Cable-Included/dp/B07F7YL1N8/ref=sr_1_4?crid=25K42L84RFU0L&keywords=charger+dji+mavic&qid=1657789107&sprefix=charger+dji+mavic,aps,147&sr=8-4