Why Choose ESC Xiaomi Mi A3/Mi 9 Lite Battery?
Professional Xiaomi Battery Manufacturer
ESC is an experienced Xiaomi battery manufacturer serving mobile phone repair shops, refurbishment facilities, spare-parts wholesalers, repair chains, distributors and private label battery brands.
A professional research and development team, automated production equipment and standardized inspection procedures support consistent specifications, stable production and reliable repeat-order quality.
Factory-Direct Wholesale Supply
Purchasing from a factory direct battery wholesaler gives professional buyers direct access to production, inspection, OEM customization, private packaging and after-sales support.
ESC supports samples, single-model purchasing, mixed-model orders and long-term bulk battery supply programs.
Shared BM4F Compatibility
The BM4F replacement battery is designed for compatible Xiaomi Mi A3 and Mi 9 Lite devices.
Shared compatibility can help wholesalers and repair chains simplify SKU management, reduce duplicate inventory and improve stock turnover.
Model-Matched 4030mAh Capacity
The replacement battery has a listed capacity of 4030mAh and a standard voltage of 3.82V.
Xiaomi publishes both the Mi A3 and Mi 9 Lite with a 4030mAh typical and 3940mAh minimum battery specification, making the replacement capacity consistent with the original device battery class. Xiaomi
Brand-New Pure-Cobalt Cell
The battery uses a brand-new pure-cobalt lithium-ion cell designed to provide stable voltage output, controlled internal resistance and consistent charging and discharging performance.
The listed cycle-life target is more than 800 charging cycles under suitable charging, storage and operating conditions.
Strict Quality Control
Quality inspections cover appearance, dimensions, voltage, internal resistance, capacity, flex connection, protection functions, charging performance and aging behavior.
ESC states that batteries are fully tested before shipment, with a factory defect-rate target below 0.1% and a customer-reported defect rate below 1%.
Integrated PCM Protection
The PCM board provides protection against overcharging, over-discharging and short circuits.
The protection board, flex cable, connector and contact points are inspected before shipment to reduce electrical abnormalities and installation-related failures.
OEM Battery Factory Support
As an OEM battery factory, ESC supports custom battery labels, customer logos, barcode labels, retail boxes, instruction cards, warranty cards and export-carton markings.
These services help wholesalers, distributors and private label battery suppliers create differentiated Xiaomi replacement battery ranges.
Flexible Wholesale MOQ
The single-model MOQ is 20 pieces. Mixed-model wholesale orders can start from 100 pieces, depending on the selected products, packaging and customization requirements.
Samples are available for professional wholesale buyers to evaluate before approving a larger order.
Stable Lead Time and Warranty
Standard battery orders can normally be prepared within approximately seven days when materials and inventory are available.
A 12-month supplier warranty is available for qualified product-quality issues.
Global Battery Shipping
Available shipping methods include DHL, UPS, air freight, sea freight, railway freight and road transportation.
The shipping route can be selected according to the destination, order quantity, customs requirements, delivery schedule and transportation budget. ESC
Quick Specifications
| Specification | Details |
|---|---|
| Product Name | Xiaomi Mi A3 / Mi 9 Lite Replacement Battery |
| Battery Model | BM4F |
| Compatible Devices | Xiaomi Mi A3 and Xiaomi Mi 9 Lite |
| Compatible Device Models | M1906F9SH and M1904F3BG |
| Battery Type | Rechargeable Lithium-Ion Battery |
| Cell Material | Brand-New Pure-Cobalt Cell |
| Listed Capacity | 4030mAh |
| Original Minimum Capacity Class | 3940mAh |
| Standard Voltage | 3.82V |
| Product Configuration | Replacement Battery With Flex Connection and PCM |
| Protection Functions | Overcharge, Over-Discharge and Short-Circuit Protection |
| Cycle-Life Target | More Than 800 Charging Cycles |
| Charging Time | Approximately 1–3 Hours |
| Standby Time | Approximately 3–7 Days, Depending on Device Use |
| Working Temperature | -10°C to 50°C |
| Factory Defect-Rate Target | Below 0.1% |
| Customer-Reported Defect Rate | Below 1% |
| Standard Lead Time | Within Approximately 7 Days |
| Warranty | 12 Months |
| Single-Model MOQ | 20 Pieces |
| Mixed-Model MOQ | 100 Pieces |
| OEM Service | Custom Logo, Battery Label, Barcode and Private Packaging |
| Available Certifications | ISO 9001, CE, FCC, RoHS, IEC 62133, PSE, REACH, UL 2054, MSDS, UN38.3, KC and TISI |
| Express Shipping | DHL or UPS, Approximately 3–6 Days |
| Air Freight | Available According to Destination and Quantity |
| Sea Freight | Approximately 20–40 Days |
| Railway Freight | Approximately 30–35 Days |
| Road Transportation | Approximately 20–25 Days |
| Shipping Port | Shenzhen |
| Payment Methods | T/T, Western Union, L/C, PayPal, MoneyGram and Credit Card |
Product specifications, certification availability, MOQ, production time and transit schedule should be confirmed according to the production batch, destination, order quantity and packaging requirements. ESC
What Is a Xiaomi Mi A3/Mi 9 Lite Battery?
Product Definition
A Xiaomi Mi A3/Mi 9 Lite battery is a 4030mAh, 3.82V Li-ion replacement battery using the BM4F reference. ESC is a Xiaomi battery manufacturer, phone battery supplier and OEM battery factory providing strict QC, private labels, bulk supply and global shipping.
Key Features
1. Shared BM4F Replacement Platform
The BM4F configuration is designed around the battery dimensions, flex position, connector orientation and electrical requirements of compatible Mi A3 and Mi 9 Lite devices.
Shared compatibility provides a practical inventory option for repair shops and wholesalers handling both models.
2. Model-Matched 4030mAh Capacity
The battery provides a listed capacity of 4030mAh and a standard voltage of 3.82V.
Actual runtime depends on measured discharge capacity, phone condition, screen brightness, network activity, installed applications, temperature and charging habits.
3. Complete Replacement Configuration
The product includes a model-matched flex connection and PCM protection board rather than being supplied as an unprotected bare cell.
This complete configuration helps professional technicians reduce additional assembly work during battery replacement.
4. More Than 800 Charging Cycles
The pure-cobalt cell has a listed cycle-life target of more than 800 charging cycles under suitable charging, storage and operating conditions.
Actual cycle life depends on discharge depth, charging voltage, device temperature, charger quality and daily usage.
5. OEM and Private Label Support
Custom logos, battery labels, barcode labels, retail boxes, instruction cards, warranty cards and export cartons are available for wholesale and private label orders. ESC
Compatible Xiaomi Models
| Compatible Device | Device Model | Battery Reference | Compatibility Notes |
|---|---|---|---|
| Xiaomi Mi A3 | M1906F9SH | BM4F | Confirm Original Battery Code and Connector |
| Xiaomi Mi A3 Regional Versions | M1906F9 Series | BM4F | Verify Dimensions and Flex Orientation |
| Xiaomi Mi 9 Lite | M1904F3BG | BM4F | Confirm Original Battery Label Before Ordering |
| Xiaomi Mi 9 Lite Regional Versions | M1904F3 Series | BM4F | Sample Installation Recommended |
Xiaomi identifies M1906F9SH as a Mi A3 device model and M1904F3BG as a Mi 9 Lite device model. Both platforms are published with 4030mAh typical batteries. Xiaomi
Compatibility should be confirmed by checking the exact phone model, original BM4F battery reference, battery dimensions, flex orientation and connector position.
The BM4F battery should not be confused with batteries for the Mi 9, Mi 9 SE, Mi 9T, Mi 9T Pro, Mi A2 or other Xiaomi models.
Applications
Mobile Phone Repair Shops
The BM4F battery is suitable for professional technicians replacing aged, damaged, swollen, fast-draining or low-capacity Mi A3 and Mi 9 Lite batteries.
Smartphone Refurbishment Facilities
It supports batch refurbishment programs requiring model-specific replacement batteries, consistent electrical specifications and stable repeat supply.
Xiaomi Parts Wholesalers
The battery can be included in a wholesale Xiaomi replacement battery range for repair shops, technicians, repair chains and regional service centers.
Repair Chain Stores
Centralized purchasing helps repair chains maintain standardized battery references, predictable inventory and consistent replacement requirements across multiple locations.
Private Label Battery Brands
OEM customization supports customer logos, branded labels, retail packaging, barcode management, instruction cards and warranty materials.
E-Commerce Battery Sellers
The battery is suitable for online sellers requiring accurate compatibility information, retail-ready packaging, model-specific inventory and stable stock.
International Distributors
Mixed-model purchasing, export documentation and multiple transportation methods support regional distribution and international wholesale programs.
ESC Replacement Battery vs Original Xiaomi Battery
| Comparison Item | ESC Replacement Battery | Original Xiaomi Battery |
|---|---|---|
| Product Type | Compatible Aftermarket Replacement Battery | Factory-Installed or Official Service Battery |
| Compatible Devices | Xiaomi Mi A3 and Mi 9 Lite | Original Model-Specific Device |
| Battery Reference | BM4F Replacement Reference | Verify Reference on Original Battery |
| Typical Capacity | Listed 4030mAh | 4030mAh Typical |
| Minimum Capacity | Subject to Production Specification | 3940mAh Minimum |
| Standard Voltage | Listed 3.82V | Original Model-Specific Electrical Specification |
| Battery Chemistry | Pure-Cobalt Lithium-Ion Cell | Built-In Rechargeable Lithium Battery |
| Product Condition | Brand-New Replacement Battery | Brand-New When Originally Installed |
| Flex Connection | Model-Matched Replacement Flex | Original Factory Flex |
| Protection System | PCM Protection Board | Original Factory Protection System |
| Protection Functions | Overcharge, Over-Discharge and Short-Circuit Protection | Integrated Original Protection Functions |
| Cycle-Life Positioning | Listed Target of More Than 800 Cycles | Depends on Battery Age and Usage Conditions |
| Charging Compatibility | Uses the Device Charging System | Mi A3 and Mi 9 Lite Support 18W Charging |
| Installation Method | Professional Repair Installation Required | Installed During Manufacturing or Authorized Service |
| Compatibility Verification | Confirmed by Model, Battery Code, Dimensions and Connector | Integrated With the Original Device |
| Branding | ESC, Neutral Label or Customized Private Label | Original Xiaomi Identification |
| Packaging | Standard Wholesale or Customized OEM Packaging | Original Service-Channel Packaging |
| Wholesale Availability | Available for Professional B2B Purchasing | Subject to Official Service-Channel Availability |
| OEM Labeling | Supported | Not Available for Third-Party Branding |
| Private Packaging | Supported | Not Available |
| Order Flexibility | Single-Model, Mixed-Model and Customized Orders | Limited by Official Service-Channel Policies |
| Single-Model MOQ | 20 Pieces | Generally Unavailable Through Flexible Wholesale |
| Warranty | 12-Month Supplier Warranty | Subject to Original Manufacturer Service Terms |
| Target Buyers | Repair Shops, Refurbishers, Wholesalers and Distributors | Original Manufacturing and Authorized Service Networks |
| Cost Positioning | Competitive Professional Replacement Solution | Generally Positioned Within the Official Service Ecosystem |
Xiaomi publishes both devices with a 4030mAh typical and 3940mAh minimum battery capacity. Replacement capacity, dimensions, voltage behavior, connector compatibility and charging performance should be verified through sample testing before bulk approval. Xiaomi
Quality Control Process
Incoming Material Inspection
Battery cells, protection boards, flex cables and connectors are checked for appearance, dimensions, voltage and production consistency before assembly.
Cell Grading
Cells are grouped according to measured capacity, voltage, internal resistance, thickness, appearance and self-discharge performance.
Consistent cell grading helps reduce variation between batteries from the same production batch.
Capacity Verification
Professional battery analyzers are used to verify whether measured discharge capacity meets the approved BM4F product specification.
Capacity records can be reviewed during sample evaluation according to the agreed inspection requirements.
PCM Protection Testing
The PCM board is tested for overcharge, over-discharge and short-circuit protection according to the approved production procedure.
Flex and Connector Inspection
The flex cable, welding points, connector position and contact surfaces are checked for alignment, appearance and electrical continuity.
Charging and Discharging Test
Charging and discharging performance is checked to identify abnormal current, unstable voltage, excessive temperature or early capacity loss.
Aging Inspection
Aging tests help identify abnormal self-discharge and unstable electrical performance before shipment.
Final Inspection
Battery appearance, dimensions, printed information, BM4F reference, flex position, quantities and packaging are checked before order release. ESC
OEM and Private Label Service
Custom Battery Labels
Customer logos, BM4F references, capacities, voltages, warning information, batch numbers and traceability codes can be printed on the battery label.
Private Label Packaging
Available options include individual retail boxes, protective trays, barcode labels, instruction cards and warranty cards.
Barcode and SKU Management
Customized model codes, barcode labels and SKU information help wholesalers manage multiple Xiaomi replacement battery products.
Flexible Branding Options
Buyers can select ESC branding, neutral labels or customized private label designs according to their sales channel and target market.
Mixed-Model Purchasing
Different Xiaomi, Redmi, POCO, Samsung, iPhone, Huawei, OPPO, Vivo, tablet and laptop battery models can be combined according to confirmed quantities.
Export Carton Customization
Outer-carton labels, shipping marks, quantities, battery references and customer branding can be customized for international shipments.
Ordering Information
Quotation Requirements
Provide the required battery model, order quantity, destination country, packaging requirements, logo files, certification requirements and preferred shipping method.
Sample Evaluation
Professional buyers can request samples to evaluate dimensions, connector orientation, flex position, measured capacity, voltage stability and charging performance.
Compatibility Confirmation
Confirm the exact device model, original BM4F battery reference, dimensions and connector position before placing an order.
A photograph of the original battery label is recommended when the regional device version is uncertain.
Bulk Production
Bulk production begins after the battery specification, order quantity, label artwork, packaging, payment terms and delivery requirements are confirmed.
Shipping Arrangement
The recommended transportation route is selected according to battery quantity, destination, customs requirements, delivery schedule and shipping budget.
FAQ
1. What is the capacity of the Xiaomi Mi A3/Mi 9 Lite battery?
The BM4F replacement battery has a listed capacity of 4030mAh and a standard voltage of 3.82V.
Xiaomi publishes both devices with a 4030mAh typical and 3940mAh minimum battery specification.
2. What battery model is used for the Xiaomi Mi A3 and Mi 9 Lite?
The applicable replacement battery reference is BM4F.
Buyers should compare the battery reference, dimensions, flex position and connector orientation with the original battery before ordering.
3. Can the same BM4F battery be used for the Mi A3 and Mi 9 Lite?
The BM4F replacement battery is listed for compatible versions of both devices.
The exact regional model, original battery code and connector position should still be verified before installation.
4. Which device model numbers are compatible with the BM4F battery?
Common device references include M1906F9SH for the Xiaomi Mi A3 and M1904F3BG for the Xiaomi Mi 9 Lite.
Regional versions should be verified using the original battery label and internal connector layout.
5. Is the BM4F battery compatible with the Xiaomi Mi 9?
No compatibility should be assumed.
The Mi 9, Mi 9 Lite, Mi 9 SE and Mi 9T are different device platforms and may use different battery models, dimensions and connectors.
6. Does the BM4F battery include a protection board?
Yes. The replacement battery includes a PCM board designed to provide overcharge, over-discharge and short-circuit protection.
The protection functions are checked during the quality-control process.
7. Is this an original Xiaomi battery?
No. It is a compatible aftermarket replacement battery manufactured for professional repair, refurbishment and wholesale markets.
It should not be described as an original Xiaomi service battery.
8. What is the minimum order quantity?
The single-model MOQ is 20 pieces. Mixed-model wholesale orders can start from 100 pieces.
Final quantities depend on the selected battery models, packaging and customization requirements.
9. Can ESC customize the battery label and packaging?
Yes. ESC supports customer logos, private battery labels, retail boxes, barcode labels, instruction cards, warranty cards and export-carton markings.
Customized artwork and packaging details can be approved before bulk production.
10. What warranty and shipping methods are available?
A 12-month supplier warranty is available for qualified product-quality issues.
Shipping methods include DHL, UPS, air freight, sea freight, railway freight and road transportation. Delivery time depends on the destination, customs clearance, quantity and selected logistics route.
