Car Battery Replacement

I have Honda City Diesel car and i am using it very less a week, now its battery is drained quickly. Is it because i am not using frequently or shall i change the battery which can perform better than this. Please suggest me some good battery brands and where i can get it online at cheapest cost.

Thought about a battery tender?

Get a proper battery charger.

If it's not getting chargd suffciently a bigger battery won't help at all.
We cannot know which batteries actually are sold in INDIA. Markets and
offerings vary widely depending on country. Generally, when it comes to
batteries, you get what you pay for.

Btw, if you don't drive that much you'd better go for a gasoline driven car
instead of a Diesel.

Lithium-Ion jump box.

Optima red top battery.