Description
Battery model: BM51
Battery capacity: 5500mAh (typical) / 5400mAh (rated)
Rated voltage: 3.85V (compatible with 3.8V)
Charge limit voltage: 4.4V
Battery type: Li-Polymer
Features: Dual IC protection (overcharge, over-discharge, short circuit protection)
Compatible with: Xiaomi Mi Max 3 (M1804E4T, M1804E4A, M1804E4C)
Package include: 1 x battery
Restore the massive battery life of your Xiaomi Mi Max 3 with this BM51 5500mAh replacement battery. The Mi Max 3 features a 6.9-inch display and was Xiaomi’s battery-focused phablet released in July 2018, designed for users needing exceptional screen-on time. This Li-Polymer cell delivers reliable 5500mAh capacity for all-day streaming, browsing, and gaming. Features dual IC protection for enhanced safety against overcharge, over-discharge, and short circuits. Made with grade A cells. CE, RoHS, and UN38.3 certified for safety compliance.
Important — User-Replaceable Design: The Xiaomi Mi Max 3 features a removable back cover, making battery replacement accessible for DIY users. However, caution is needed as the cover is made of delicate plastic. Professional installation is recommended if you lack experience.
Compatibility Note: Fits Xiaomi Mi Max 3 models M1804E4T, M1804E4A, and M1804E4C. Batteries America sells a compatible version (5400mAh) for $26 with 1-year warranty. Please check your original battery model before purchasing.
Battery Care Tips: Avoid full discharge (keep above 20%). Keep away from high temperatures. If swelling occurs, stop use immediately. For best performance, use the original charger that came with your device. New batteries require 2-3 full charge cycles to reach full capacity. After installation, charge the new battery fully before first use for optimal performance.
✅ Condition: Brand New – Never used, factory-tested quality
✅ Dual IC Protection – Overcharge, over-discharge, short circuit protection
✅ CE / RoHS / UN38.3 Certified – Safety tested
✅ 5500mAh High Capacity – Restore original battery life
✅ For Xiaomi Mi Max 3 (M1804E4T) – 2018 battery-focused phablet
✅ 90-Day Warranty – Hassle-free replacement
✅ Ships in 3-7 days with tracking – Fast delivery
🛡️ Shipping Protection Available at Checkout – Covered against loss, damage, or theft
✅ PayPal Buyer Protection included – Secure checkout
✅ 100% Compatibility Guarantee – If it doesn’t fit, we’ll refund you. No questions asked.
⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.
✅ Why Our Warranty Stands Out
Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.
| Compare | ✅ Qingsm Tech | ⚠️ eBay / AliExpress |
|---|---|---|
| Warranty Period | 90 days from delivery | 15-30 days from order confirmation |
| When It Starts | 📦 Upon delivery | ⚠️ Upon order confirmation (even before you receive it) |
| Claims Handling | We do it directly — email us | Automated dispute system, seller dependent |
| After Window Expires | Still can contact us for support | No recourse, seller can ignore you |
🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.
📦 Shipping Cost & Delivery Time ( Economy Shipping from China )
📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates; actual delivery may be affected by customs, weather, or other unforeseen circumstances.
| Destination | Freight (USD) | Est. Delivery Time |
|---|---|---|
| United States | $7.80 | 8-20 days |
| Canada | $6.80 | 18-45 days |
| Mexico | $10.00 | 30-60 days |
| Germany, France, United Kingdom, Greece | $6.50 | 18-45 days |
| Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus | $8.00 | 18-45 days |
| Croatia, Finland, Lithuania, Latvia, Slovenia | $8.00 | 30-60 days |
| Romania | $14.00 | 30-60 days |
| South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan | $7.50 | 18-45 days |
| United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil | $18.00 | 25-60 days |
* Delivery times are estimates; actual delivery may be affected by customs or other factors. If your country is not listed, we are currently unable to ship batteries to that destination.
🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient’s CPF, as it is required for Brazilian customs and shipping. Thanks ! We appreciate your understanding.
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