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Why the watt is the most important spec in battery-powered devices

Every time I see “Mah” on the consumer product, disturbed. Megilez also started in the bruise. This is because the most important components of portable tools – batteries and processors – should really be measured in Watt: they are the common specifications that give you a real idea of ​​what your device can do.

With watt, you can know the amount of craft energy under the hood – the amount of energy that your battery provides and the amount of recycling across your slice. Watts determine whether there is sufficient cooling to allow this processor for free, instead of high temperature and suffocation prematurely. WhatsApp can tell you the amount of battery life you have left, based on the battery watch (WH) of the remaining battery and the damage in which your device is drained.

You can do everything with mathematics in primary schools – so why don’t you be watered everywhere? Consumers are regularly exposed to electric power measurements when purchasing light bulbs or reading their energy bills. But many tool manufacturers insist on measuring their batteries in millimeters and their chip speed in Megaherz or Gigaherz, which none of them is good for the real device power.

The DECK STEAM games by hand is an example of how to be useful. With a maximum of the processor with a maximum of 15 watts and up to 9 watts of the general expenditures of other components, a 49WH battery arduous game drains in almost two hours. An eight -year -old can do this mathematics: 15 plus 9 is 24, and 24 times 2 is 48. You can put two hours of 24 watts to 48WH, and because you have 49Wh, you are almost sure to get it.

With the least arduous games, I will sometimes see the steam platform that drains the battery at just 6 watts – which means that I can get eight hours of playing because 6 watts times 8 hours is 48WH, with 1WH staying in a 49Wh battery.

OLED steam surface.
Photo: Vjeran Pavic / The Verge

In the simplest, Watt is a scale of work. It is the amount of energy it requires Do Something appointed speedWhether heating the food in the microwave, which has an area of ​​1000 watts or saving 2-3 watts that the smartphone needs while browsing its screen. It is also a specific electricity scale – Watts is the Volts Times – and a battery sting scale, such as the example of the steam deck above. (My colleague Thomas Recker can also It helps you to calculate the wat watch to store the power outside the network and the home backup))

Perhaps the most attention is, WhatsApp is used as a heat dizziness scale. If you have seen a computer processor with a specific TDP, or the thermal design power, it is measured in Watt, then this is a quantity of refrigeration Required to run this tenderness at its normal speed. The slide is only at the speed that can be cooled, which is why WhatsApp is more important than megaherz.

Today, laptops have broken the 5 GHz barrier, which means that their chips can theory five billion times per second. Phone chips are also approaching. But in the small and restricted devices that operate with batteries, they can only keep these speeds shortly before the temperature rises. This is why MacBook Pro with a fan has a better continuous performance than MacBook Air without one, Even if both have the exact same slide. It is part of the reason that the “15W” processor will generally feel slower than the “28W” processor, even if both can reach 5 GHz. More strength and more cooling means that you are not just hostility; You can go to the distance.

Unfortunately, manufacturers are not always fond of WhatsApp sharing with us. They preferred to quote larger and more impressive numbers instead, as they announced the power bank or the phone with a “5000 mAh battery per hour” instead of a 19.4Wh package. You can Transform what to WayneBut only if you know the device’s effort, another design is often blocked. Even some chip makers hide a child from their chips so that you do not know that you are using a weaker version, such as NVIDIA RTX 4080, 80 Watt, although they are more able to work Do not always make a big difference.

James Watt left behind the legacy of paying the confusing specifications

Manufacturers also prefer to share the percentage of the battery that remains already a useful number like WATT. They prefer to allow you to choose mysterious energy situations such as “performance”, “balanced” and “saving the battery”, rather than using more intelligent Watt so that you can determine the extent of the extent of the battery drain.

I feel that Bukhari and other personal computer games should be a waking call that WhatsApp is the best way. that it amazing To think, “Foolishness, my computer should last an additional hour before I get to my next country outlet” and make this a fact by rebalancing the primary school equation.

But if not, I will blame the inventor James Watt himself, who left behind a legacy to pay the confusing specifications. While Watt is a truly useful unit, Watt did not bring it. Instead, a various The phrase that has been misleading for people for more than two centuries now.

Watt was already named for James Watt, more than 60 years after his death, due to his marketing coup. Watt was the man who was first popular for the phrase “horse power” as a way to sell the improved steam engine in all kinds of industry.

according to Private biographyEven he did not reach the idea of ​​comparing engines with horses that could replace them; This is widely due to the pioneer of the steam engine Thomas Safri. plus, Documents suggest from Watt His definition of horse force was dependent on some rear mathematics! An effectively, Watt told that he wanted a steam motor who can do 12 horsepower to turn a wheel at a height of 24 and a half every minute, and each horse is guessed of 180 pounds, so one horse’s strength has become 32,400 feet per minute, and it has been rounded up to 33,000 pounds.

But although the real horse has More than a horse’s strengthAt least for short periods, stuck the unit of the horse power around it. It has become one of the most permanent examples of the invention specifications to help sell products, and this may be the reason that we must bear nonsense like MAH now.

Done watt, or otherwise I will start measuring tools in horse power Outside though. The official transfer rate is 746 watts to 1 hp. Did you know? AMD recommends one power supply To get her latest graphics card? HECK, Nvidia’s 5090 needs three quarters of the horse’s own strength.

There is no better unit than Watt. I hope the companies tell us that.

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