Xiaomi MIX Fold 4 Battery Replacement | BM2H & BM2G 5100mAh Li-ion Battery Set
Xiaomi MIX Fold 4 Battery Replacement: BM2H & BM2G 5100mAh Li-ion Polymer Battery Set
The Xiaomi MIX Fold 4 is a premium foldable smartphone, designed for ultimate portability and performance. However, its dual-cell battery configuration requires careful replacement to maintain reliability. If your MIX Fold 4 experiences degraded battery life, slow charging, or unexpected shutdowns, Longhehui’s BM2H & BM2G battery set is the perfect OEM-grade solution to restore your phone’s full power and durability.
Why Choose Longhehui’s BM2H & BM2G Battery Set for Xiaomi MIX Fold 4?
1. 5100mAh Total Capacity for All-Day Power
BM2H: Typical 2510mAh (9.77Wh), Rated 2460mAh (9.57Wh)
BM2G: Typical 2590mAh (9.79Wh), Rated 2515mAh (9.79Wh)
Total Capacity: 5100mAh (typical) / 4975mAh (rated), matching Xiaomi’s official specs
Delivers uninterrupted power for browsing, streaming, gaming, and foldable multitasking
Eliminates mid-day battery anxiety, keeping your MIX Fold 4 running strong from morning to night
2. Full Compatibility with 67W Fast Charging
Supports Xiaomi’s 67W wired ，50W wireless ，and reverse charging
Optimized for high-voltage charging (4.54V limit) to deliver rapid, stable power
Minimal heat generation, no charging speed restrictions
Quick top-ups to get your phone back to full power in minutes
3. OEM-Grade Quality & Multi-Layer Safety Protection
Uses premium lithium-ion polymer cells, certified to CE, RoHS, ISO 9001/9002
Built-in protection against overcharge, over-discharge, short circuit, and overheating
100% rigorous in-house testing before shipment, guaranteeing consistent quality
Safe for daily use, even during heavy foldable performance
4. Precision Fit for Foldable Design
Exact match to MIX Fold 4’s dual battery compartments (BM2H = small cell, BM2G = large cell)
No modifications needed for installation
Maintains the phone’s ultra-thin profile and structural integrity
Perfect for repair technicians to replace quickly, reducing labor costs
Key Specifications of Longhehui BM2H & BM2G Batteries
| Parameter | BM2H Battery | BM2G Battery |
|---|---|---|
| Model | BM2H | BM2G |
| Type | Li-ion Polymer Battery | Li-ion Polymer Battery |
| Typical Capacity | 2510mAh / 9.77Wh | 2590mAh / 9.79Wh |
| Rated Capacity | 2460mAh / 9.57Wh | 2515mAh / 9.79Wh |
| Nominal Voltage | 3.89V | 3.89V |
| Charge Limit Voltage | 4.54Vdc | 4.54Vdc |
| Compatibility | Xiaomi MIX Fold 4 | Xiaomi MIX Fold 4 |
| Fast Charging | 67W Wired, 50W Wireless | 67W Wired, 50W Wireless |
| Safety Features | Overcharge/Short Circuit/Thermal Protection | Overcharge/Short Circuit/Thermal Protection |
| Manufacturer | Longhehui (20+ Years) | Longhehui (20+ Years) |
Why Partner with Longhehui?
BM2H & BM2G Battery Installation Quick Guide
Power off your Xiaomi MIX Fold 4 completely and disconnect all cables
Gently heat the back cover edges to soften adhesive (low-temperature heater recommended)
Use a plastic pry tool to remove the back cover—avoid damaging the foldable hinge
Locate the battery connectors under the protective film, disconnect with a spudger
Gently lift the old BM2H and BM2G batteries from their respective compartments
Align the new Longhehui BM2H (small cell) and BM2G (large cell) batteries, ensuring flat, secure placement
Reconnect the battery connectors firmly, reapply the protective film
Reattach the back cover, pressing firmly along all edges to reactivate adhesive
Power on the phone and charge for 2–3 full cycles to optimize performance
About Longhehui (Your Trusted Mobile Battery Manufacturer)
Contact Us for Xiaomi MIX Fold 4 Battery Wholesale & Retail
📧 Email: longhehuibattery@gmail.com
🌐 Official Website: https://www.longhehui.com
📱 WhatsApp: +86 15323737840
📩 Inquiry: We respond to all B2B inquiries within 24 hours—share your order quantity, customization needs, or target market for a tailored quote.