Why it’s important to know the battery type in Mi Smart Scale 2
The Xiaomi Mi Smart Scale 2 has become a popular weight and body composition gadget thanks to its accuracy, synchronization with the Mi Fit app and affordable price. However, like any self-powered device, it requires periodic battery replacement. Many users are faced with the question of what battery is needed for these scales when it comes time to change it.
Unlike classic floor scales, which often use AA or AAA finger batteries, the Mi Smart Scale 2 features a compact disc element, which is not always specified in the instructions, and the wrong choice can lead to malfunctions or even damage to the device. In this article, we will discuss the exact type of battery where to buy it, how to replace and extend the life of the scales.
We will focus on the critical nuances of the choice of the battery — for example, why you can not use cheap analogues with questionable quality, and what to do if the scales stopped turning on after replacement, and consider alternative options for eating and answers to frequent questions of users.
What type of battery is used in Xiaomi Mi Smart Scale 2
According to the technical documentation from Xiaomi, the scales of the Mi Smart Scale 2 are equipped with a lithium battery type CR2032. This is a disc power cell with a diameter of 20 mm and a thickness of 3.2 mm, widely used in small electronic devices: remotes, watches, fitness trackers and other smart equipment.
The main parameters of CR2032:
- 🔋 Voltage: 3V (standard for lithium cells)
- 🔄 Capacity: 220-240 mAh (depending on manufacturer)
- ⚖️ Weight: ~3 grams
- 📅 Shelf life: 5-10 years (when stored in original packaging)
It is important to note that Xiaomi does not recommend using other types of batteries, even if they look similar (for example, CR2026 or CR2016), these cells have a lower capacity and thickness, which can lead to unstable balances or breakage, and alkaline or salt batteries are not suitable, they do not provide the necessary voltage and quickly discharge.
⚠️ Note: Using batteries with voltages below 3V (e.g. 1.5V) can disable the electronic scale board. Always check the marking on the element before installation.
Where is the battery and how to replace it: step-by-step instructions
Replacing the battery in the Mi Smart Scale 2 takes no more than 5 minutes, but requires care. The power cell is located at the bottom of the scale under the removable lid. Here's how to open it and install a new battery:
- Turn the scales over and place them on a soft surface (such as a towel) to avoid scratching the glass.
- Find a slot to open the lid – it is located next to the Mi or Xiaomi logo.
- Carefully place the lid on a flat object (plastic map, mediator) and remove it. Don't use metal tools - they can damage the latches!
- Remove the old battery by pressing it slightly on the side, and it should jump out of the holder.
- Install the new CR2032 battery with the plus side (+) upwards (usually this is indicated on the board).
- Close the lid, making sure all latches are in place.
After the weight change, you should automatically turn on. If this does not happen, check:
- 🔄 Polarity of the battery (plus should be on top).
- 🔌 Contacts on the board - they could oxidize (clean them with a cotton swab soaked in alcohol).
- 📱 Sync with Mi Fit app – sometimes reconnection is required.
Buy a CR2032 battery of a proven brand (Duracell, Energizer, Panasonic)
Prepare a plastic tool to open the lid
Check the production date on the battery (freshness is important!)
Disable the scales from the Mi Fit app (if reset is required)
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If the scales are not turned on even after checking, there may be a problem with the fee or contacts, in which case we recommend contacting the Xiaomi service center.
How much battery life in Mi Smart Scale 2 and how to extend it
The average life of the CR2032 battery in the Xiaomi Mi Smart Scale 2 is 6-12 months with regular use (1-2 weighings per day).
| Factor. | Impact on service life |
|---|---|
| Frequency of use | The more you weigh, the faster the battery drains, and with 5+ weighings per day, the time is reduced to 3-6 months. |
| Battery quality | Cheap analogues (no-name) serve 2-3 times less than branded ones (Duracell, Maxell). |
| Storage temperature | At temperatures below 0°C or above 40°C, the capacitance drops by 20-30%. |
| Synchronization with Mi Fit | A continuous Bluetooth connection increases energy consumption by 10-15%. |
To extend the life of the battery, follow these tips:
- 🔋 Use branded items – they are more expensive, but last longer and more stable.
- 📴 Turn off Bluetooth if you don’t sync (in the Mi Fit app settings).
- 🏠 Keep the scales in a dry place – humidity accelerates the corrosion of contacts.
- ⚡ Remove the battery if you don’t plan to use the scale for more than a month.
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If the scales show the wrong weight or are often turned off, try resetting them to factory settings: press and hold the on button (if any) or remove the battery for 10 minutes.
Where to buy a CR2032 battery for Mi Smart Scale 2: Proven options
The CR2032 battery can be found in most electronics stores, supermarkets or online.We recommend the following purchase options:
- 🏬 Offline stores: M.Video or Eldorado -- they're usually in the battery department. Five, Magnet, Auchan -- small electronics sections. Pharmacies -- sometimes sell disc batteries for medical devices.
- 🌍 Online marketplaces: Wildberries - a large selection of brands at low prices. Ozon - often there are shares on battery sets. AliExpress - cheaper but longer delivery (suitable for stock).
The cost of one CR2032 battery varies from 30 to 150 rubles depending on the brand and place of purchase.
- 🥇 Duracell or Energizer – 100-150 rubles (serve up to 1.5 years).
- 🥈 Panasonic or Maxell – 70-100 rubles (good average option).
- 🥉 GP Camelion – 40-70 rubles (budget choice, but the service life is shorter).
⚠️ Warning: Avoid buying batteries at markets or street vendors, as there is a high risk of running into a counterfeit or expired product. Always check the date of production on the package (freshness is not older than 1-2 years).
Duracell/Energizer (premium)
Panasonic/Maxell (Middle Segment)
GP/Camelion (budget)
Any one you have on hand.
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Frequent problems after battery replacement and their solutions
Sometimes, after installing a new battery, Xiaomi Mi Smart Scale 2 does not work properly.
| Problem. | Possible cause | Decision |
|---|---|---|
| Libras not included | Improper battery polarity or oxidized contacts | Check position. +/−, clean the contacts with alcohol |
| The testimony is confused. | Reset calibration after battery replacement | Put the scales on a flat surface and perform calibration in Mi Fit |
| Not synchronized with the phone. | Resetting Bluetooth connections | Remove the scales from the list of devices in Mi Fit and connect again |
| A new battery is quickly discharged | Element defect or high current leakage in the scales | Try another battery; if the problem persists, the charge is faulty. |
If the scale after the battery replacement shows an Err error, it may mean:
- 🔧 Sensor problem – try resetting (remove battery for 1 minute).
- ⚖️ Incorrect installation – check if the battery is tightly sat in the nest.
- 📱 Application Conflict – Update Mi Fit to the latest version.
What if the weight is very high with a margin of error?
Alternative power options: can batteries or other batteries be used?
Some users are wondering if a standard CR2032 battery can be replaced with a rechargeable battery or other type of cell.
- 🔄 Rechargeable batteries ML2032 (Li-R: Pros: can be charged up to 500 times, environmentally friendly. Cons: 3.6 V (vs. 3 V y) CR2032), Conclusion: Xiaomi does not recommend using them because of the risk of overheating.
- 🔋 Batteries. CR2026 or CR2016: Pros: cheaper and thinner, fits the connector. Cons: smaller capacity (up to 150 mAh), will discharge faster.
- ⚡ External power: Pros: no need to change batteries. Cons: requires soldering and body modification, deprives the scales of mobility. Conclusion: not advisable for most users.
Expert advice: If you want to keep your scales running smoothly, stay on the original CR2032 batteries from proven brands. Experimenting with alternative power can lead to a loss of warranty or device breakdown.
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Using uncertified batteries (such as cheap Chinese batteries) can cause fire or battery bloating, and the risk is not justified – it is better to spend 100 rubles on a quality CR2032.