Find your mi box power consumption by entering your wattage, the hours a day your mi box runs and your electricity rate. Click Calculate and you get your cost per day, month and year along with the kWh it uses.
Wondering what your streaming stick-sized box adds to the electric bill? Mi Box power consumption is tiny: the Xiaomi Mi Box draws roughly 3 W to 5 W while it works and about 2.4 W on standby, so a full year of nightly viewing costs a few dollars. This guide shows the measured figures, the yearly kWh maths and the settings that keep the draw low on your Android TV.
The Mi Box is a small plastic TV box built around an efficient SoC, so its working power sits far below that of a television. Xiaomi's own support notes put the working power of the first Mi Box and the newer Mi Box S at about 3 W to 5 W. The maximum power reaches only about 8 W, and that happens when an external hard disk or mobile hard disk is plugged into the port and feeds high-quality video. Compare with how much energy does a rice cooker use.
Your exact reading depends on the usage scenarios and the workload, because the power consumption of any media device changes with what the chip is doing at that moment. Treat the numbers below as a reference, not a guarantee: the real draw depends on your firmware, your accessories and your display.
Xiaomi lists a minimum, a maximum and a stable power value for each state of the Xiaomi Mi Box. The table keeps the main states side by side so you can see how little the power draw moves between idle and busy.
| State | Maximum | Stable |
|---|---|---|
| Screen protection | 5.2 W | 3.9 W |
| Standby | 2.4 W | 2.4 W |
| Network settings | 5.2 W | 5.1 W |
| Play online video, Ultra HD 4K | 4.5 W | 4.5 W |
| Fast forward | 5.5 W | 5.0 W |
| Volume adjustment | 4.5 W | 4.4 W |
The spread between the lowest and highest rows is only about 3 W, which is why this box counts as a low consumption device. Even fast forward and volume adjustment barely register, while screen protection and the network settings menu stay close to the idle level.
Standby is the one state that runs around the clock, so it deserves a closer look. Pressing the power button on the remote control opens a restart menu rather than cutting power, which means the box keeps its Wifi and Bluetooth radios alive and wakes without trouble after hours. That convenience costs about 2.4 W every hour of the day.
Because most households watch for only a few hours, the idle hours outnumber the viewing hours by a wide margin. In the worked example below, the 20.5 idle hours produce more than half of the yearly energy consumption, even though each hour uses about half the power usage of an active one.
A kWh is one thousand watt-hours, and your utility bills you per kWh. To turn a Mi Box S reading into a yearly cost, multiply watts by hours, divide by 1,000 and multiply by your rate. Also see how many watts does a hot water dispenser use.
$$\text{kWh per year} = \frac{\text{watts} \times \text{hours per day} \times 365}{1000}$$
$$\text{cost} = \text{kWh per year} \times \text{price per kWh}$$
Say you stream for 3.5 hours a day at 4.6 W and leave the box on standby for the other 20.5 hours at 2.4 W, with electricity at $0.17 per kWh. The active share is 3.5 × 4.6 = 16.1 Wh and the standby share is 20.5 × 2.4 = 49.2 Wh, so a day uses 65.3 Wh. Over 365 days that is 23.83 kWh, or about $4.05 a year at your rate.
| Item | Watts | Hours per day | kWh per year | Cost per year |
|---|---|---|---|---|
| Streaming | 4.6 W | 3.5 | 5.88 kWh | $1.00 |
| Standby | 2.4 W | 20.5 | 17.96 kWh | $3.05 |
| Total | 24 | 23.83 kWh | $4.05 |
Unplugging the box entirely for those 20.5 hours would save about $3.05 a year, which is rarely worth the slower start-up and the missed OTA update windows.
The point of comparison that matters is the TV itself. A 55-inch Xiaomi panel such as the Mi TV 4 55 lists a maximum of 155 W, roughly thirty times the 5 W of a busy Mi Box. At the same 3.5 hours a day and $0.17 per kWh, that TV alone uses about 198 kWh and costs near $33.66 a year, so the box is under 12% of what the screen costs to run.
In other words, swapping to a streamer like this one never raises your bill meaningfully, and it can lower it if you stop using a power-hungry smart TV platform.
The Mi Box S uses an Amlogic S905X SoC with a quad core ARM Cortex CPU and a Mali-450 GPU. That hardware is paired with 2GB of DDR3 memory and 8GB of eMMC storage, a modest combination that sips energy compared with a phone chip or a game console.
The included power adapter is a DC 5.2V, 2.1A unit, which caps the box at about 10.9 W (5.2 × 2.1) even though real use stays under 6 W. The round power connector plugs into the back panel, next to the HDMI 2.0a output and the USB 2.0 port. If the original power supply fails, replace it with another adapter of the same rating rather than a weaker phone charger.
Low draw means low heat. The case has no ventilation slots, and the box is fanless, relying on an internal heat sink to move heat into the plastic shell. A reviewer ran a stress app for fifteen minutes with a thermal camera, and the top of the case warmed only slightly with no throttling, so the system kept its maximum constant performance and sustained performance at full speed. The noise level is 0 dB.
For a device this efficient, performance is strong. The Android TV system runs Oreo out of the box, with an OTA update path to a newer release, and it outputs 4K with HDR over HDMI. Netflix and YouTube both work well, and Kodi can be installed from Google Play. Built-in Chromecast lets your phone push video to the screen. On the downside, Dolby passthrough is limited, so audio support is basic. None of this raises the bill: the 4.5 W measured for Ultra HD playback in the table above already covers 4K with HDR, so picture quality and playback performance are not what drive the draw.
Efficiency would mean little if the software were poor, but the Xiaomi TV box runs a clean build of Android TV with the standard rows of recommended content. Google certifies the system, so Android apps install from the store without sideloading, and the Google assistant answers voice searches from the Bluetooth remote control. The Android TV interface renders at 1080p even when the picture output is 4K, which keeps graphics work, and therefore wattage, low. Related: how many watts does a satellite dish use.
The Bluetooth remote has a dedicated Netflix key, a voice key and a multitask key, and it needs no line of sight. You can pair a phone as a second remote through the Android TV remote app, or connect a mouse or keyboard through the USB port. If the remote control loses sync, pressing Back and the circle button together re-pairs it. Either way the remote runs on its own batteries, so it adds nothing to the box's wattage.
Built-in Chromecast means any phone can cast a Netflix episode or a YouTube playlist to the box, and the Chromecast receiver idles at the same few watts as the rest of the system. Within the Android catalogue, Netflix reaches 4K with HDR10, and regional limits on other apps depend on your country. A Netflix stream is the lowest-effort case for the chip because the decoder does the work in hardware, a point worth remembering when you read the Netflix rows of any power draw table.
The single USB port is meant for a flash drive, a hub or a wired network dongle, and each one adds a little to the total. A USB stick adds a fraction of a watt, while a spinning disk can add several, which is where the 8 W maximum comes from. Because the USB port is limited to 2.0 speeds, large libraries load slowly, so many owners leave the port empty and stream instead.
At about $4 a year in electricity, running cost is a rounding error next to the purchase price. Every review of the Xiaomi Mi Box lands on the same verdict: it is a cheap, quiet and efficient way to turn a standard TV into a smart one. A typical review quotes a street price of roughly 50 to 70 dollars at Amazon and Walmart, and a reader review on either store usually praises the quiet case and the simple remote.
Read together, the low TV energy draw and the modest price give a payback that is hard to beat. If you care about audio passthrough or want wired networking, consider a pricier set top box, and accept that its power draw will rise accordingly. The same TV shopper who weighs a 155 W television against a 5 W box already understands why the box wins on running cost, and why the Android TV experience is fine for most households.
You can shave a little more off the already small draw. Skip extra storage on the USB port, keep the firmware current through every firmware update, and avoid leaving a heavy app running behind your media player of choice. When you travel, unplug the adapter, and for the rest of the year accept the 2.4 W standby draw as the price of an instant start.
Match the rating of any replacement adapter to the original so it adds no extra draw, check its price against a branded one, and consider buying from Walmart or Amazon where return policies are easy. A quick review of the listing will show whether the unit includes the right LED-indicator design, a proper remote and a plastic case that fits behind your cabinet.
During setup you choose resolution and HDR; leaving 4K on uses almost the same power as 1080p, so there is little reason to drop the picture quality for savings.