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BP4B 4300mAh 3.87V Li-Polymer replacement battery for Xiaomi 12 Lite 2203129G and POCO M5s 22071178PG, front view on white background showing battery surface and connector flex cable

BP4B 4300mAh 3.87V Li-Polymer Replacement Battery for Xiaomi 12 Lite / POCO M5s 67W

Original price was: $18.99.Current price is: $14.99.

🔘 BP4B 4300mAh 3.87V | 🔋 Li-Polymer | 📱 Compatible with Xiaomi 12 Lite 2203129G / POCO M5s 22071178PG 67W

8 in stock

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📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ 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 Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo 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 and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 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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Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

✅ 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.

Battery model: BP4B
Capacity: 4300mAh (Typical) / 16.6Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-Polymer / Li-ion
Compatible with: Xiaomi 12 Lite (2203129G), POCO M5s (22071178PG, K7BP)
Replaces OEM part number: BP4B
Package include: 1 x battery
Restore the battery life of your Xiaomi smartphone with this BP4B 4300mAh replacement battery. Compatible with Xiaomi 12 Lite (released July 2022, featuring a 6.55-inch 120Hz AMOLED display, Snapdragon 778G processor, and 108MP main camera) and POCO M5s (released September 2022, featuring a 6.43-inch FHD+ AMOLED display and MediaTek Helio G95 processor). Both devices originally came with a BP4B battery, and this Li-Polymer battery delivers the factory-rated 4300mAh capacity for all-day usage. For reference, third-party retailers sell this battery for approximately $15 to $26.
Built with high-quality Grade A Li-Polymer cells and multi-layer safety protection against overcharge, over-discharge, short circuit, and overcurrent. CE, RoHS, and UN38.3 certified for safe transport and use. The BP4B battery supports 67W fast charging technology — official specifications from Xiaomi indicate a 67W charger is included with the Xiaomi 12 Lite, capable of charging the phone from 0% to 100% in approximately 41 minutes.
Compatibility Note: Please power down your device and check your original battery label before ordering. Ensure the model number printed matches BP4B. This battery is compatible with Xiaomi 12 Lite (model 2203129G) and POCO M5s (model 22071178PG). Professional installation is recommended as both phones have sealed back covers with strong adhesive. The phones are not water resistant, so water seal maintenance is not a concern after replacement.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. For best 67W fast charging performance, use the original charger that came with your phone. If you don’t use the battery for a long time, store it in a dry and cool place and charge it fully once every three months. If you notice swelling or overheating, stop use immediately.

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Frequently Asked Questions

The BP4B battery for Xiaomi 12 Lite is compatible with Xiaomi 12 Lite (model 2203129G) and POCO M5s (model 22071178PG, K7BP). The Xiaomi 12 Lite was released in July 2022 featuring a 6.55-inch 120Hz AMOLED display, Snapdragon 778G processor, and 108MP triple camera. The POCO M5s was released in September 2022 featuring a 6.43-inch FHD+ AMOLED display, MediaTek Helio G95 processor, and 64MP quad camera. This 4300mAh battery for POCO M5s is a direct replacement for the original BP4B battery. If your Xiaomi 12 Lite battery replacement is needed because the phone drains quickly or won't hold a charge, this is the correct battery. Please verify your device model in Settings > About Phone and check the battery model BP4B printed on your existing battery before purchasing.

The BP4B 4300mAh 3.87V battery has a typical capacity of 4300mAh (16.6Wh) and a rated voltage of 3.87V. Charge limit voltage is 4.45V. It is a Li-Polymer battery built with Grade A cells and is CE, RoHS, and UN38.3 certified. The Xiaomi 12 Lite supports 67W fast charging — official specifications indicate that the phone can charge from 0% to 100% in approximately 41 minutes when paired with the original 67W charger. The POCO M5s, while also compatible with the BP4B battery, supports 33W fast charging natively. For best results, always use the original charger that came with your phone.

Professional installation is strongly recommended for Xiaomi 12 Lite battery installation. Both the Xiaomi 12 Lite and POCO M5s have sealed designs with glass or plastic back covers secured by strong adhesive. The process to replace BP4B battery in Xiaomi 12 Lite 2203129G requires heating to soften adhesive and careful prying to avoid damaging the display or back cover. The phones are not water resistant (no IP rating), so water seal maintenance is not a concern after replacement. If you choose DIY phone battery replacement, watch a full teardown tutorial before starting, use a heat gun at low temperature (no more than 70°C), and never reuse a battery after removal. Third-party repair shops typically charge $15-30 for labor.

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