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BLP757 4300mAh 3.87V Li-ion Polymer replacement battery for Realme 6 RMX2001, Realme 6S, Realme 6i, Realme 6Pro RMX2061, and OPPO Reno 3, front view showing battery surface and small 2-pin connector
BLP757 4300mAh 3.87V replacement battery for Realme 6 RMX2001, Realme 6S, Realme 6i, Realme 6Pro RMX2061, and OPPO Reno 3, back view showing model number BLP757, capacity 4300mAh, and voltage 3.87V on spec label
BLP757 4300mAh 3.87V replacement battery connector for Realme 6 RMX2001, Realme 6S, Realme 6i, Realme 6Pro RMX2061, and OPPO Reno 3, close-up showing small 2-pin connector interface with flex cable for motherboard connection

BLP757 4300mAh 3.87V Battery for Realme 6 RMX2001 / 6S / 6i / 6Pro RMX2061 / Reno 3 Replacement

Original price was: $24.99.Current price is: $18.99.

🔘 BLP757 4300mAh 3.87V | 🔋 Li-ion Polymer | 📱 For Realme 6 RMX2001 / 6S / 6i / 6Pro RMX2061 / Reno 3 30W VOOC

8 in stock

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

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Warranty Period90 days from delivery15-30 days from order confirmation
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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
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, 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.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $4.00 (approx. €3.50) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

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Description

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

✅ 4300mAh High Capacity – Restores full battery life for Realme 6 series and OPPO Reno 3

✅ 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: BLP757
Capacity: 4300mAh (typical) / 16.64Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Realme 6 (RMX2001), Realme 6S, Realme 6i, Realme 6 Pro (RMX2061), OPPO Reno 3
Package include: 1 x battery
Breathe new life into your Realme 6 series or OPPO Reno 3 with this BLP757 4300mAh replacement battery. The Realme 6 series was launched in 2020 as a mid-range powerhouse, featuring 90Hz displays and MediaTek Helio G90T/G80 chipsets that made gaming smooth and responsive. The OPPO Reno 3, released around the same time, brought 5G connectivity and a slim design to the Reno lineup. After 4‑5 years of daily charging cycles, the factory battery capacity naturally declines. This Li‑ion Polymer battery restores the full 4300mAh capacity, bringing back the reliable endurance these devices were known for — a full day of moderate use with room to spare. Built with grade A cells and multi‑layer safety protection against overcharge, over‑discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Designed for Extended Battery Life: The Realme 6 series featured a 4300mAh battery that delivered approximately 1.5 days of moderate use and up to 13‑15 hours of continuous video playback. The OPPO Reno 3 shared the same BLP757 battery design, delivering similar endurance. After years of use, common symptoms of battery degradation include: the phone requiring daily charging instead of lasting through the next day, unexpected shutdowns at 15‑25% battery, slower charging speeds than when new, or visible battery swelling. This replacement battery restores the factory‑spec 4300mAh capacity and supports 30W VOOC flash charging (Realme 6/6S/6i/6Pro) and 30W VOOC 4.0 (Reno 3) — the proprietary low‑voltage, high‑current fast charging technology that keeps the device cooler during charging. Whether you are still using your Realme 6 as a daily driver or keeping a Reno 3 as a secondary device, this BLP757 replacement will give it a new lease on life.
Compatibility Note: Fits Realme 6 (RMX2001), Realme 6S, Realme 6i, Realme 6 Pro (RMX2061), and OPPO Reno 3 only. Please confirm your battery model before ordering — BLP757 is printed on your original battery. This battery is NOT compatible with Realme 7 series, Realme X series, OPPO Reno 3 Pro, Reno 4 series, or other OPPO models. The Realme 6 series and Reno 3 share the same BLP757 battery design, but newer models use different battery configurations.

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Frequently Asked Questions

The BLP757 4300mAh battery replacement is compatible with Realme 6 (RMX2001), Realme 6S, Realme 6i, Realme 6 Pro (RMX2061), and OPPO Reno 3. If you need a BLP757 battery for Realme 6 RMX2001 or a BLP757 battery for Realme 6 Pro RMX2061, this replacement battery is the exact match. The BLP757 battery for Realme 6S and the BLP757 battery for Realme 6i share the same design, making this a direct drop‑in replacement for all these models. For BLP757 battery compatibility OPPO Reno 3, please verify your device model in Settings > About Phone. This battery is NOT compatible with Realme 7 series, Realme X series, OPPO Reno 3 Pro, or OPPO Reno 4 series. If your Realme 6 battery replacement or OPPO Reno 3 battery replacement is needed because the old battery no longer holds charge, this BLP757 3.87V 4300mAh Li‑ion Polymer battery will restore full performance.

The BLP757 4300mAh battery for Realme 6 series and OPPO Reno 3 has a typical capacity of 4300mAh (16.64Wh) and a rated voltage of 3.87V, with a charge limit of 4.45V. This BLP757 3.87V 4300mAh Li‑ion Polymer battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For BLP757 battery life after replacement, expect a full day of moderate use on a single charge — restoring the factory endurance that made the Realme 6 series and OPPO Reno 3 popular choices for battery‑conscious users. The BLP757 4300mAh Realme 6 battery performance supports 30W VOOC flash charging (Realme 6/6S/6i/6Pro) and 30W VOOC 4.0 (Reno 3), the proprietary low‑voltage high‑current fast charging technology. For best BLP757 battery performance Realme 6 Pro, allow 2‑3 full charge cycles after installation to calibrate the battery meter. If your original Realme 6S battery now requires multiple charges per day instead of lasting all day, this replacement will restore the full 4300mAh capacity and fast charging speed.

Professional Realme 6 battery installation or OPPO Reno 3 battery installation is recommended. Both the Realme 6 series and OPPO Reno 3 have a sealed glass back with strong adhesive. To replace Realme 6 battery BLP757 RMX2001 or replace OPPO Reno 3 battery BLP757, the technician must heat the back cover to soften adhesive, carefully pry it open to avoid damaging the fingerprint sensor cable, disconnect the battery's small 2‑pin connector, remove the old battery, and install the new BLP757 battery before resealing. For BLP757 battery installation Realme 6 Pro, improper handling can damage the display or compromise the device's sealing. Third‑party repair shops typically charge $20‑40 for labor. For Realme 6 battery health maintenance and OPPO Reno 3 battery care tips: 1) Use the original VOOC charger and cable for optimal charging speed and safety. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 4300mAh cell. 3) Avoid exposing the phone to high temperatures (above 40°C / 104°F), especially while charging. 4) For long‑term storage (over 2 months), keep the battery at approximately 40‑60% charge. 5) Perform a full calibration cycle after installation: drain the phone until it auto‑shuts off, then charge uninterrupted to 100%. For BLP757 battery care tips Realme 6i, stop using immediately if the battery shows any swelling.

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