You'll need to have a subscription to Prime to be able to make the most of the deals down below though.
The Trust Urban 12,500mAh power bank usually costs £16.99 but the Prime Day deal is even cheaper at £9.81. That deal is available until 22:50 BST on July 11.
Then the Anker PowerCore 10,000mAh charger is also on sale down to £14 when it's usually £20 on Amazon. This deal is set to end at 23:15 BST, so you should hurry to be able to get it.
Perhaps the best deal for a portable charger is the price drop on the iMuto 30,000mAh. That portable charger has an RRP of £89.99, but Amazon Prime Day has dropped the price down to £30.
That deal will rise back up to the normal price at 23:30 BST so hurry to be able to get this portable charger while it's cheaper.