After teasing 10,000 mAh and 15,000 mAh concept devices, Realme is ready to make those big batteries a reality with the P4 Power, which Launching in India on January 29 With 10,001mah capacity.

Realme says the P4 Power will last for three and a half days of light use, which I can believe — I got two to three days of battery with the 7,500mAh Oppo Find X9 Pro. Perhaps more impressively, the P4 Power supports 27W reverse charging, which can quickly double as a power bank for some other devices.

We’ve seen bigger batteries, but not often phones have them in this size—the P4 Power weighs just 218 grams, and thanks to using a silicon-carbon battery, looks considerably slimmer. It can’t quite beat the 216G, 8mm thick Honor Power 2which has a slightly larger 10,080mAh battery, but is only available in China. India’s release means P4 Power will be much easier for the rest of us.