If you can afford it, a small or medium ecoflow battery and one or two 200W solar panels with solve a ton of your issues in India, if nobody steals it. I'm in Africa and have frequent load shedding too, and I've replaced so many devices in my home with rechargeable/outdoor variants that can be recharged/powered by solar if needed.

Also, don't buy asus again. If you are looking for repairable laptops, dell, hp and lenovo are the only decent brands when it comes to repairs & parts (make sure the not to buy the cheapest consumer models).