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

After two weeks of use it seems like a very solid replacement. However, if you are expecting it to have a capacity almost double of the OEM battery, you might be disappointed. The battery seems to last about 7 minutes on MAX power, which is the same as what you get with the OEM battery that has a much smaller rated capacity. The price on this one is still better, and the color actually matched perfectly.