Design a poster

We are selling three different types of portable charger. The smallest Power bank is 2600mAh capacity which can charge almost one time for phone. The middle one is 5200mAh capacity which can charge 2 times for phone. The biggest one is 10400mAh capacity which can charge 4 times for phone. Actually, they are not only can charge phone, but also charge anything as long as it has USB connection (like, iPad, MP3, Digital camera, PSP, etc.). Lots of people does not know about the use of power bank, so you need to show them what it is, and how useful it would be. They are quite price sensitive as well, so you need to show the price directly on the poster. The smallest one (2600mAh) is £5.99. The middle one (5200mAh) is £8.99. The largest one (10400mAh) is £13.99. You need to draw customer’s attention, for example, write big and stand out sentence ‘Shit, power is dead’ (I am not sure it is a right expression or not. If you want to use this sentence please rephrase to the right expression) or something like this to bring resonance with the customer. The whole poster should use stand out colour and picture to draw attention. The size of poster should be in A3 size. it need to be done ASPS