# Battery for portable devices extra digital — XIAOMI Mi 3 BM31 3000mAh Li‑ion

**URL:** https://aio.lv/en/product--extra-digital-sm220625--10768870
**Data updated:** 2025-12-30 10:07 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** extra digital
**Manufacturer code:** SM220625
**EAN:** 9990000220625
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--extra-digital-sm220625--10768870

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Replacement Li‑ion battery by extra digital for XIAOMI Mi 3, model BM31, with a rated capacity of 3000mAh. Designed for use in compatible XIAOMI Mi 3 devices to restore runtime and device autonomy. Suitable for repairs or battery replacement to improve operating time; follows standard Li‑ion handling and installation procedures.

## Long description

Replacement battery for XIAOMI Mi 3 (BM31) with a rated capacity of 3000–3050 mAh and nominal voltage 3.8 V. This Li‑polymer / Li‑ion type battery from extra digital is intended to restore device runtime and autonomy in compatible XIAOMI Mi 3 phones and is designed with protection against common faults.
Advantages
The battery charges faster and offers extended service life compared with standard cells. It is constructed without a memory effect, allowing flexible charging at any convenient time. Built‑in protection reduces the risk of overcharging, overheating and ignition, while optimized discharge parameters help maximize usable capacity.
Suitable for
 XIAOMI Mi 3 (compatible models listed as Xiaomi M3 / Xiaomi MIUI / Xiaomi Mi 3)
 Battery replacement and phone repair for restoring operating time
 Users who need a spare or replacement battery to extend device autonomy
Key specifications
 Model / compatible part number: BM31
 Capacity: 3050 mAh (typical), marketed as 3000 mAh
 Type: Li‑polymer / Li‑ion
 Voltage: 3.8 V
 Brand: extra digital
 Warranty: 12 months
How to use
Switch off the phone and remove the old battery following the device manufacturer's instructions. Install the replacement BM31 battery ensuring proper alignment of contacts. Use original or compatible chargers and avoid installing damaged cells. After installation, fully charge the battery before first use to achieve correct battery level reporting.
Usage recommendations
Do not expose the battery to high temperatures, mechanical damage or liquid. If compatibility is uncertain, consult a specialist or the seller before purchase. Follow standard Li‑ion handling and disposal guidelines and replace only with the specified BM31 battery for XIAOMI Mi 3.

## FAQ

### How much does the Battery extra digital XIAOMI Mi 3 BM31 3000mAh cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All extra digital products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized extra digital service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10768870/60008325_large.webp