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The Turbo mode is a very, very different story, albeit one you must manually engage every time you switch on. Punch that button on top and the BCS122GB does a Tesla and goes ‘Insane’. Suction and airflow are multiples of the normal power mode, delivering great cleaning ability. Jekyll and Hyde? You bet. In constant use, we got single-battery run times a fair bit longer than Bosch’s claims. These ranged from a truly staggering 89 minutes on normal power mode with just a detail tool attached, to a fairly respectable nine minutes on Turbo power mode with the floorhead running. An hour and half of cleaning from a single battery is our new vacuum cleaner runtime record by miles – and you get two batteries. Three hours of vacuuming anyone? No, us neither. The Bosch Unlimited 8 has no screen. Instead, it has a small LED light on the top that will light up when vacuuming or charging. That is great, but adding a display would make it better. Attachments Bosch Unlimited 8
While we have no complaints with the power or runtime in Turbo mode, standard mode simply sacrifices too much suction for those long, long runtimes. Given you get two swap-out batteries and a fast charger, it isn’t even necessary. The Bosch comprehensively outruns fixed-battery competitors like Dyson anyway. The Unlimited's runtime is about 34 minutes in normal mode, which is relatively short compared to other premium cordless vacuums. With these standard tests, we aim to compare different vacuum cleaners and offer you the best possible advice.The extension wand has a hinge about two-thirds of the way up that can be released to allow it to bend up to 90 degrees. This is particularly useful for getting under low furniture. The long, bendy crevice tool is also handy for getting into narrow spaces behind wardrobes and radiators. It’s not unique to Bosch, but there aren’t many models that come with one of these as standard. As popularised by the eponymous Dyson, this Bosch is also bagless but it only has a capacity of 0.4l so you’ll have to empty it out pretty frequently. It’s smaller than the Dyson V8’s 0.54l bin, although on balance there’s not enough in it to make a significant difference to the way you’ll use the vacuum.
All in all, the BOSCH Unlimited Pro Power BSS81POW1 cordless vacuum impressed with its extremely powerful suction in the cleaning tests. This combination allows Bosch to claim ‘unlimited’ runtime for this cleaner. On standard power setting, it will go for an hour, and the charger can power up a battery in 55minutes. With the two batteries, theoretically, you simply won’t run out of power. Joe, our wireless vacuum expert on the Smart Home Fox team, has spent over half a decade meticulously testing every model that has landed with us. As it is, the normal mode provides ineffectively low suction power. It’s of very little use in typical day-to-day household cleaning and I guarantee most users will simply default to the Turbo setting all the time. At which point, nine minutes is not much at all for general floor vacuuming duties. Good job Bosch supplies two batteries. Bosch claims that this filter system that the air is 99.9% clean when it gets out of the device. And indeed, when you pull out the filter, you can see that it catches a lot of dirt and small particles.We assess the cleaning performance of each vacuum cleaner, compare it to the competition, and then rate it.
The Unlimited 8’s filter, on the other hand, has a fine mesh canister with a pleated filter inside. The producer advertises that this filter system can trap 99.9% of dust and dirt, like HEPA filters. It isn’t washable and can be rinsed by twisting the red handle on top, called Rotation Clean. The Unlimited 8’s filter can be rinsed by twisting the red handle on top The two batteries supplied with this model are remarkably compact and light for their capacity. For comparison, a lot of budget cordless cleaners come with 1.5Ah or 2Ah batteries that are larger and heavier. The solid capacity promises a whole lot of run time from the cleaner, with the ability to swap out batteries and charge while you are cleaning. The Bosch Unlimited has a size of 130 cm (51.2 inches) from top to bottom. That’s about the same as most other cordless vacuum cleaners on the market. Most people can vacuum comfortably with this size. Even using normal power mode with the motorised floorhead we got around an hour’s worth of cleaning. That is truly outstanding run time. Turbo mode with the non-motorised tools delivered around 14 minutes.
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On normal power mode with no tools, this cleaner barely registered 65dB of noise output. That is much quieter than most of its premium cordless competitors and the sound is an inoffensive drone – as opposed to the dentist-drill sound of some. At 65dB, the BCS122GB competes with some of the market’s best low-noise and ‘silence’ mains cleaners. You won’t disturb the neighbours even during midnight cleaning sorties. But the best thing about the exchangeable battery is yet to come. The highlight is that you can use the same battery for many other Bosch tools, too. We’ll talk more about that later. How big and heavy is the Bosch Unlimited from the Series 8? The High Power brush has great "gliding properties", which also contribute to the cordless vacuum’s smooth movement.
But on my high carpet, the head of Unlimited 8 was pulled down onto the carpet, and the roller slowed gradually and finally stopped completely. That is common with air-powered “turbo” rollers, making for a bad vacuuming experience. I switched to normal power settings, and this problem stopped happening, but the clean performance was fairly poor afterward. On the downside, it has few of the features that are slowly becoming absolute essentials on a cordless vacuum. While I could live with the clunky emptying (and actually, I’m slightly taken by it), I would find it hard to introduce a vacuum into my household that doesn’t comb hair tangles out of its floor head. Things change when Turbo is engaged but the Bosch still isn’t great. It’s more powerful this time than the Beldray but lags behind the Dyson, Xiaomi and Shark vacuums. Unusually, the BCS122GB has a single filter unit, rather than the multifarious foam, paper, mesh and pleated filters of its rivals. But thanks to Bosch’s very sleek filter design that doesn’t diminish the filtration, and the company claims that a hygienic 99.9% of particles will be captured.It’s the same with the turbo button. To switch to turbo mode, you have to press the button on the top to activate the mode. You won’t have to hold that button, either. That’s quite convenient when cleaning. Power for All Bosch Unlimited 8’s noise level is measured between 67 and 71 dB, which is tolerable, and I could still have a conversation with my wife while vacuuming without raising my voice. This volume is quieter than many of its premium cordless competitors, including the Dyson V15, which produces 71 to 76 dB of noise. Display Screen The configuration of the Bosch Unlimited will be familiar to most people by now; if you’ve seen a Dyson V8, you know the deal. The vacuum motor, battery and dust collection bin are all housed in a compact, handheld unit that you connect your cleaning attachments to. Nearly an hour and a half is the longest battery life I’ve seen so far. The Bosch Unlimited 8 comes with two interchangeable batteries, meaning you have almost three hours in total to vacuum! The Dyson V15’s battery is also removable and replaceable, so you can double its run time by purchasing extra batteries.
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