Huawei Reverse charging Ascend Mate 2
Huawei's latest phone, the Ascend Mate 2, can be used to share its battery power with other phones.Twitter @tomemrich

Battery drain is one of the biggest problems for smartphone users but Huawei's latest smartphone features such a large battery that it can be used to charge other smartphones.

Using this reverse charging, users can connect other smartphones to the Ascend Mate 2 and make use of the huge 4,050mAh battery inside the phone.

The battery is the largest in any smartphone on the market and along with a promised 30% efficiency in power usage, Huawei says that the phone will last two days even for heavy or business users.

You will be able to charge smartphones using a microUSB cable, and promises to support both Android smartphones and iPhones.

Richard Yu, CEO of Huawei's consumer division, even demonstrated the feature on stage at CES on Monday, using it with another Android smartphone.

The Ascend Mate 2 is an update to Huawei's first phablet which continues to use a 6.1in screen as well as supporting the fastest 4G Lte standard.

It is nominally an Android smartphone but this is heavily adapted with Huawei's Emotion user interface which promises to make using your phone much easier.

Huawei has yet to announce when the phone will be on sale or how much it will cost.

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