Review on Upgrade Your Dyson V7 Performance With Biswaye 21.6V V7 Battery Replacement - Compatible With Multiple Models by Albert Bohimia

This product is simple yet amazing. It is really easy to install and gives you endless runtime if you already have bunch of batteries for your tools. It makes it a bit heavier in an unbalanced way since the batteries for the tools are designed to have balance when attached to their original tool. Overall its great if you have batteries for your tools. If not that would be an expensive option to have that switch.