Google Maps takes some time to be updated, we have 2 EV’s and a 3rd on order. My daughter just drove from our home in Chiang Rai to our Chiang Mai home and used 43% of her battery in her MG EP+ which for a limited time is still available at 771,000 baht…an absolute bargain (the government pay a substantial part of the cost on the first 6,000 MG BEV’s sold this year).
I have a somewhat more expensive BEV with a range of 510km.
I know of at least 1 charger at a coffee shop on the way to CM, they are being added weekly and often they are completely free to use.