Under a thousand rupees the marketing gets loud and the specs get vague. Here is what is genuinely achievable at that price, what gets quietly dropped, and how to tell the two apart.
Wattage has become a marketing number. Here is how to work out what your devices can actually draw, and why gallium nitride changed what fits in a bag.
Brands now advertise 40, 60, even 100 hours. Almost none of it is per charge. Here is how to work out the only number that affects your day.
Two acronyms that appear on the same box and do opposite jobs. One changes what you hear, the other changes what the caller hears. Most people buy the wrong one.
The number on the front of a powerbank is not the amount of charge that reaches your phone. Here is the arithmetic, and what capacity you actually need.