It has similar spec to my current broken laptop. Instead of a i5, it comes with an i7 8550U, 8GB of RAM and 256GB storage. It is a renewed product, by the way. And it goes for around ₹24,000. Honestly, I feel like it is too expensive, considering how there are better spec laptops available.
@velox_vulnus no, there are no battery mods for 80 series.
It also has no CD/DVD that you can swap for 2nd drive or so.
I recommend you to watch a T480 review with disassembly first.
I saw some of the videos, however, they don’t tell the entire story. For example, as I’ve mentioned above, the Ideapad S540 15-IWL comes with two battery variants - luckily, mine was available in 70Wh. However, for those, who wanted an extra hard disk cage, they have to go for the 52.5Wh battery. I’ve tried checking out the parts page, looks like that empty drive cage cannot be replaced with another fancy device, which is a little bit annoying.