The Xiaomi Smart Scale 2 in white is a popular weight control solution with data synchronization in Mi Fit or Zepp Life. But even such a simple device requires proper maintenance, especially when it comes to power. Many users are faced with the question: what batteries are needed for this model, how to install them correctly and what to do if the scales suddenly stop working after replacing the elements?
In this article, we will not only examine the specifications of batteries, but also the nuances of their choice, ways to extend the life of the battery, as well as the typical errors that lead to malfunctioning of the scales, and we will pay special attention to compatibility with analogues, because original batteries are not always available, and cheap fakes can harm the device.
If you just bought a Xiaomi Smart Scale 2 or noticed that the scales began to show incorrect data, first check the batteries. Even with a weak discharge, the device may turn on, but the sensors will work unstable. How to avoid such problems and what power cells guarantee a long work - read on.
Official Battery Requirements for Xiaomi Smart Scale 2 in White
The manufacturer clearly indicates in the instructions that for Xiaomi Smart Scale 2 (model XMTZC05HM) required 4 battery-type AAA (LR03). These are standard "little" voltage power cells 1.5 The total supply voltage of the scales is 6 V (4 × 1.5 V).
Important: the scales do not support batteries of the same size (Ni-MH or Li-ion) and the use of rechargeable cells can lead to:
- 🔋 Unstable operation of sensors (weighing error to ±500g)
- ⚡ Sync failures with the application via Bluetooth
- 🔄 Self-rebooting of the device
Xiaomi Smart Scale 2 batteries are not included – they must be purchased separately. The manufacturer recommends using batteries from well-known brands such as Duracell, Energizer or Panasonic. Cheap “no-name” batteries often have less capacity and can leak, damaging contacts inside the scales.
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If you buy batteries in stock, keep them in their original packaging at room temperature. Cold reduces cell capacity, and heat accelerates self-discharge.
How to open the battery compartment: step-by-step instructions
To replace the batteries in Xiaomi Smart Scale 2, you need to open the back cover correctly. Many users try to put a knife or screwdriver in it, risking damage to the plastic latches.
Algorithm of action:
- Turn the scales with a glass panel down.
- Find a small recess on the back cover with an inscription PUSH (usually in the upper left corner).
- Press this depression with your thumb towards the center of the scales.
- The cover will rise slightly - carefully remove it, pulling up.
If the lid doesn't lend itself, make sure it's jammed by dust or moisture, and then you can tap the edge of the scale with your palm to move the mechanism, and you can never use excessive force, because it can break the mounts!
Make sure the scales are off (no display indication)
Prepare 4 new batteries AAA brand
Check the polarity (+/-) compartmental
Remove old batteries if they leak (use a cotton swab dipped with alcohol)-->
Battery life and signs of discharge
With regular use (1-2 weights per day), the original Duracell or Energizer alkaline batteries last 6-12 months, but the duration depends on several factors:
- 📱 Application sync frequency (Bluetooth consumes additional power)
- 🌡️ Storage temperature (humidity and heat reduce the service life)
- 🔄 Quality of batteries (cheap batteries are down 2-3 times faster)
How to know if the batteries are running out:
⚠️ WARNING: If the scales turn on but immediately turn off or show a Lo error on the display, this is a sure sign of discharge. Don't ignore it: prolonged work on "sick" batteries can damage the electronic board.
| Sign. | Probable cause | Decision |
|---|---|---|
| Libras not included | Full discharge of batteries or improper installation | Replace the elements, check for polarity |
| Testimonies "jump" (±200-500g) | Weak battery charge or contact oxidation | Replace batteries, clean contacts with alcohol |
| Not synchronized with the application | Insufficient voltage for Bluetooth operation | Install new batteries, reset the scales |
| Spontaneous shutdown | Critical discharge or short circuit | Replace the batteries, check for leakage |
Interesting fact: Xiaomi Smart Scale 2 scales consume energy even in sleep mode - about 0.01 mA/h. If you leave them without use for a year, the batteries will run out on their own, so it is better to remove the batteries for long-term storage (for example, on a trip).
Duracell|Energizer|Panasonic|GP|Another brand|I don't know.-->
Can I use batteries instead of batteries?
Technically, Xiaomi Smart Scale 2 will fit batteries format AAA, But the manufacturer doesn't recommend it:
- 📉 Battery voltage (1.2V) is lower than that of alkaline batteries (1.5V:
- 🔋 Batteries discharge faster due to high intake current Bluetooth module.
- 💥 Risk of overheating when charging (if you use scales while recharging batteries).
If you do decide to experiment, choose Ni-MH batteries with low self-discharge (for example, Eneloop), but be prepared for the fact that the scales will have to be calibrated more often, and the battery life will not exceed 3-4 months with active use.
What happens if you install Li-ion batteries 1.5 V?
How to prolong the life of batteries: 7 proven ways
Even high-quality batteries can be killed in a month if you don’t follow the simple rules. Here’s what really works for Xiaomi Smart Scale 2:
1. Turn off Bluetooth if you are not synchronizing
In the Mi Fit application settings, you can turn off automatic synchronization, which will reduce power consumption by 20 to 30 percent. → Devices → Xiaomi Smart Scale 2 → Synchronization settings.
2. Keep the scales in a dry place
Humidity accelerates the corrosion of contacts and self-discharge of batteries. Optimal storage temperature: 10-25°C.
3.Use batteries of the same brand and batch
Different elements may have different voltages, which leads to accelerated discharge of the "weak link".
4. Remove the batteries for prolonged downtime
If you do not use the scales for more than a month (for example, on vacation), remove the elements.
5. Clear contacts every 3 months
Oxidation increases resistance, which causes the batteries to discharge faster. Wipe the contacts with a cotton swab soaked in isopropyl alcohol.
6.Do not mix new and old batteries
This leads to an “unbalanced effect” – new elements will discharge faster, trying to “pull up” the old ones.
7.Buy batteries with extended shelf life
For example, Duracell Plus Power or Energizer Ultimate Lithium lasts 30-50% longer than conventional alkaline Lithium.
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The most effective way to save charge is to turn off automatic synchronization in the app, and the scales will only transmit data when weighed manually, not every 5 minutes.
Frequent Battery Replacement Mistakes and How to Avoid Them
Even a simple procedure like replacing batteries can be problematic if you make one of these mistakes:
❌ Installation of batteries of different capacity
For example, 3 Duracell batteries and 1 GP. This results in uneven discharge and sensor failures. Always use a set of 4 identical elements!
❌ Non-observance of polarity
If you get it wrong "+" And the scales won't turn on, and in rare cases, the fuse on the board may burn.
❌ Use of batteries with expired expiration date
Older cells lose up to 50 percent of their capacity and can leak. Check the date on the package!
❌ Closing the slanted lid
If the lid is not evenly clicked, the contacts may not touch the batteries. The scales will be turned on in a few times.
❌ Ignoring the leak
If the battery leaks, its acid corrodes the contacts.
⚠️ Warning: If you find white plaque on the contacts, immediately clean them with alcohol and cotton swab. Do not use abrasive materials (sandpa, knife) - they will damage the gilded coating!
❌ Keeping scales in the cold
For example, in the bathroom in the winter, low temperatures reduce battery capacity by 15-20%.
Where to buy batteries for Xiaomi Smart Scale 2: proven options
When buying batteries for smart scales do not chase for cheapness - saving 50-100 rubles can turn into a breakdown of the device.
🛒 Offline shops:
- 🏬 M.Video / Eldorado – often hold promotions on batteries of premium brands.
- 🏪 Five / Magnet - in the departments of household goods there are GP Or Kodak, the average price.
- 💊 Pharmacies – sometimes sell Energizer or Duracell batteries in small packages.
🌍 Online venues:
- 🛒 Wildberries is easy to compare prices and read reviews.Look for sellers with a rating above 4.8.
- 📦 Ozon – there are often discounts on large packages (10-20 pieces).
- 🌐 AliExpress - only if you buy proven brands (like Panasonic Evolta) Avoid "no-name" with suspiciously low price tags.
💰 Average battery prices AAA (packing.):
| Brand | Type | Price (rupe) | Duration of service (month) |
|---|---|---|---|
| Duracell Plus Power | Alkaline | 250–300 | 10–12 |
| Energizer Ultimate Lithium | Lithium | 400–450 | 12–18 |
| GP Super Alkaline | Alkaline | 150–200 | 6–8 |
| Panasonic Evolta | Alkaline | 200–250 | 8–10 |
Tip: Buy batteries in sealed blisters – this ensures that they do not run out during storage in a warehouse.