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Robot vacuums and cleaning

Dyson V7

6owners with an opinion
60%of verdicts positive
1/0positive/negative since 2024
2 yrslongest happy owner
0happy after 3+ years

Praised for performance and ease of use; criticized for noise and battery.

What people wrote

Likes it
Under $100 - an Aroma rice dispenser We cook rice every night for dinner, and this saves me about 30 seconds per meal. It holds 25lb of rice and dispenses one cup at a time. I didn't expect to love it as much as I do. Under $1000 - A Dyson V7 vacuum refurbished on ebay I hate vacuuming and if you go on forums, they always say "stick vacuums just aren't as strong." I caved when I found a deal on slickdeals and WOW! It works better than my old plug-in, it's cordless (a big blocker to cleaning) and it's fun to use.
Doesn’t like it
I bought a Dyson V7, and the battery life even from new is atrocious. On a full charge, unable to cover my very modest London flat, and of course, it cannot be used while charging. I even fitted a larger aftermarket battery. Still awkward to use. Eventually I gave up, and bought a corded Henry from Numatic. I cannot recommend a cordless Dyson for anything except light dust busting.
Neutral
Author here. I'm honored to see someone actually posted this on HN. :) I purchase my Dyson V7 as an official refurb and the battery went in to lockout a few months after the short refurb warranty expired. Thus prompting the project. The vacuum is pretty handy for my small apartment, and when I bought it, I wanted something that had decent reviews and was from a real company, not just some Amazon seller with a bunch of random characters for a name. I still like the vacuum, I just wish Dyson hadn't designed it to fail. I think there are two issues here: 1) The left out the cell balancing circuitry which is pretty standard for battery packs. 2) They designed their firmware to go in to permanent lockout when the cells go to far out of balance (300mV). For the sake of discussion, I've heard interesting two arguments on why they might have disabled cell balancing: 1) Cell balancing could be a weak point on the ISL94208 IC they used, so they could have disabled cell balancing to actually increase overall reliability. We'd never know for sure, but I could see this being plausible. This is from someone on the EEVblog thread ( https://www.eevblog.com/forum/projects/fu-dyson-bms-an-(unof... ) 2) Cell balancing isn't actually useful because a poor battery cell will plummet in voltage under load anyways due to the higher ESR in the poor cell. At least, that was my interpretation of their argument after translating it from Russian to English in a comment on the YouTube video. While I see t…
Likes it
- Apple Magic Touchpad. I used to use a wired mouse and the flexibility of a wireless touchpad (and gesture support) is much nicer. - Dyson V7 Vacuum. Having a wireless vacuum has been great. - Motobecane Gravel X-PRO HD (gravel bike). I'd never heard of a gravel bike until it was recommended to me, but I've gotten a ton of use out of it.