Topbatt 4000mAh Replacement 21.6V Battery

This is the second one that won’t hold a charge.

Battery wouldn’t charge. Flashing red light alternating with blue light. Tried charging overnight with no change. Vacuum would turn on for a tenth of a second only. Original Dyson battery works fine, just doesn’t last as long as it used to, which was why I was looking to replace it.

Brought my dead Dyson V6 back to life. Installation was easy, works just like new. Great value for the money.Note: received a bad unit, but the replacement was flawless.

Gave it 4 stars because I don't know how long it will last

I got a battery from someone else initially and that didn't work at all.But this one did work for my Dyson V6 vacuum, easy to install and much cheaper than the official one too.

So far so good. Installed it the day after I got it. Super easy. Found a YouTube video just to make sure I didn't have trouble. It's working great. I can even feel a difference in the strength.

1st battery received (Dec 2021) would not take a charge. Returned & promptly received a replacement. This 2nd battery had worked satisfactorily for approx 3 months with only occasional use, but just yesterday it stopped taking a charge (blue light comes on only for a few seconds & then goes out, and battery remains dead). Clearly based on a sample size of 2, this is NOT a reliable product and definitely NOT worth the money for only 3 months of service (past the return window). DO NOT BUY

Got for my Dyson absolute V6 handheld vacuum. The charge lasts as good as the original battery when I first got the vacuum. Plus prime shipping is awesome