EE has announced the Festival Bar, a rechargeable USB battery pack that can top-up any smartphone - and visitors to Glastonbury this year can swap their Festival Bar for a fully charged one as often as they like, for free.
Customers who order the aqua-coloured version of the Festival Bar can enjoy the free and instant recharge service offered at the festival site by EE, and they can keep the Bar they end up with at the end of the weekend.
The Festival Bar costs £20 and EE claims it will provide up to five hours of extra talk time.
EE is taking orders through its website now, but deliveries will not take place until the start of June.
As it did last year, EE will be providing 4G coverage across the festival and will be launching a Glastonbury app to help smartphone users get the most of out their weekend.