LUMSING 4.0Ah 22.2V DC31 Replacement Lithium Battery for Type B DC35 DC44 DC31 DC34 Handheld Vacuum (ONLY Fit for Type B) DC31B

Gave new life to my Dyson, runs far longer than the original battery ever did. Not surprising as it has double the amperage rating.

Delivered in less than a day! Fits my Dyson DC45 perfectly and I am looking forward to extended run time with this 4.0ah battery as opposed to the original 2.5ah battery. Longevity is still to be seen, but I think the price was very reasonable.

We purchased this battery October 27, 2021. Received and installed it sometime in early November. Used it for November and December. In January it started to fail. It was not used at all in the month of February. Today the battery lasted less than five minutes after charging all night. It's already out of warranty. This was a total ripoff.

After a little miscommunication, this company really stepped up and took care of us. Buy this product with 100% confidence, you won’t regret it!

The only reason why I gave it 4 stars is because the battery doesn’t stay at a consistent power & my original battery never did that.

This is a nice replacement that performs well and provides a longer run time than the original. It's nice to be able to run Turbo for more than a couple of minutes. Arrived as and when expected.

Not a quality replacement for a quality vacuum. Vacuum pressure is no longer consistent. There are surges of power, even with the max button engaged on the vacuum. 7 months later and the vacuum shut off after a minute of use. depress the power button again and it's good for another minute before it shuts off. Repeat this cycle 7-8 times to finish what i need to vacuum. Not happy with performance.

We thought our Dyson vacuum was dead! All it took to resurrect it was this battery! It came quickly, was easy to install and the vacuum runs like new!