Enlarge Image KFC

No matter how advanced our smartphones get, a problem persists -- sometimes, their batteries just don't last long enough. KFC is offering its Indian customers a solution.

The company has launched a deal it calls Watt a Box in India, which offers an assortment of food and a 6,100mAh powerbank. That's technically enough to fully charge two phones, but BGR India found that many of the boxes didn't offer enough juice for even one phone.

The power bank is removable, though, and it's sold at no extra cost to KFC's five-in-one meal, priced at just 150 rupees (about $2.20, £1.50 or AU$3).

The new addition allows KFC to offer "an element of utility" into the box. To make this happen, the fast food chain partnered with a Mumbai-based digital agency called Blink Digital. The pair had launched Plate of Hope campaign last month to feed India's underprivileged children through World Food Program.

Unfortunately, KFC's Watt a Box is exclusively available in select Indian outlets. Currently the fast food retail is serving a few customers in its Delhi and Mumbai outlets with the new box.