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BLP765 4025mAh 3.87V Li-ion Polymer Replacement Battery for OPPO Reno 3 A91 Reno 3A F15 CPH2043 CPH2021 30W VOOC

Original price was: $26.99.Current price is: $18.99.

🔘 BLP765 4025mAh 3.87V | 🔋 Li-ion Polymer | 📱 For OPPO Reno 3 / A91 / Reno 3A / F15 CPH2043 CPH2021 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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🔋 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 $6.00 (approx. €5.20) 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

4025mAh High Capacity – Restores full battery life for OPPO Reno 3, A91, Reno 3A, and F15

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: BLP765
Capacity: 4025mAh / 15.56Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: OPPO Reno 3 (CPH2043), OPPO A91 (CPH2021), OPPO Reno 3A, OPPO F15 (CPH2021)
Package include: 1 x battery
Revive your OPPO device with this BLP765 4025mAh replacement battery. Released in early 2020, the OPPO Reno 3, A91, Reno 3A, and F15 represented OPPO’s mid-range lineup featuring AMOLED displays, in-display fingerprint sensors, and the signature VOOC fast charging. Remarkably, all four models share the identical BLP765 battery — a rare cross-compatibility that makes this replacement battery useful for multiple devices. This Li-ion Polymer battery restores the full 4025mAh capacity for all-day usage and supports 30W VOOC fast charging. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Four Phones, One Battery — What Makes BLP765 Unique: The BLP765 battery is a rare example of a single battery model powering multiple distinct phone generations. The OPPO Reno 3 (CPH2043) was a slim 7.96mm device with a 6.4-inch AMOLED and MediaTek Helio P90. The OPPO A91 (CPH2021) offered a similar 6.4-inch AMOLED with 48MP quad cameras. The OPPO F15 targeted Indian and Southeast Asian markets with a lightweight 172g design. The Reno 3A was Japan-focused with IP68 water resistance. Despite their different market positioning and regional variants, all four share the BLP765 battery — making it easier for repair shops and users to stock a single replacement. If your phone now requires multiple daily charges, dies during use at 15-30% battery, or takes longer to charge fully, this BLP765 replacement battery will restore original performance. The 4025mAh capacity was competitive for 2020 and still provides a full day of moderate use in 2026, making battery replacement a cost-effective alternative to buying a new phone.
Compatibility Note: Fits OPPO Reno 3 (CPH2043), OPPO A91 (CPH2021), OPPO Reno 3A, and OPPO F15 (CPH2021). Please confirm your battery model before ordering — BLP765 is printed on your original battery. This battery is NOT compatible with OPPO Reno 3 Pro (which uses BLP755 battery), OPPO Reno 4 series, OPPO A92, or OPPO F17 series. The Reno 3 Pro has a different battery capacity (4025mAh but different model number and connector orientation). Always verify your battery matches BLP765 before purchasing.


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Frequently Asked Questions

The BLP765 battery for OPPO devices is compatible with four different models: OPPO Reno 3 (CPH2043), OPPO A91 (CPH2021), OPPO Reno 3A, and OPPO F15 (CPH2021). If you need an OPPO Reno 3 battery replacement for CPH2043, an OPPO A91 battery replacement for CPH2021, or an OPPO F15 battery replacement, this BLP765 4025mAh replacement battery is the exact match. The OPPO Reno 3 features a 6.4-inch AMOLED display and MediaTek Helio P90 processor. The OPPO A91 offers a similar 6.4-inch AMOLED with 48MP quad cameras. The OPPO F15 is known for its lightweight 172g design targeting Southeast Asian markets. The Reno 3A is a Japan-exclusive variant with IP68 water resistance. For BLP765 battery for OPPO Reno 3 and A91 compatibility, please verify your battery model before ordering — BLP765 is printed on your original battery. This battery is NOT compatible with OPPO Reno 3 Pro (uses BLP755), Reno 4 series, A92, or F17 series.

Yes, this BLP765 4025mAh battery for OPPO Reno 3, A91, Reno 3A, and F15 fully supports the original 30W VOOC fast charging technology. The battery has a capacity of 4025mAh (15.56Wh) and a rated voltage of 3.87V, with a charge limit voltage of 4.45V. For OPPO Reno 3 VOOC 3.0 fast charging, expect approximately 50% charge in 25 minutes and a full charge in about 65 minutes. For OPPO A91 30W VOOC charging battery performance, results are similar. This BLP765 3.87V 4025mAh Li-ion Polymer battery uses low-resistance grade A cells to handle the high current (5V/6A) of VOOC charging without overheating. The battery is CE, RoHS, and UN38.3 certified. For OPPO 4025mAh battery life expectations, users can expect 7-9 hours of mixed usage, 5-6 hours of gaming, and 9-10 hours of video playback. The 4025mAh capacity was among the larger batteries in OPPO's 2020 mid-range lineup and remains sufficient for full-day use in 2026 with a fresh replacement battery.

Professional OPPO battery installation is recommended for all four models. The OPPO Reno 3, A91, Reno 3A, and F15 all have sealed glass backs that require heating to soften adhesive. To replace OPPO Reno 3 battery CPH2043 or replace OPPO A91 battery CPH2021, the back cover must be carefully removed to avoid cracking the glass — the Reno 3 and A91 have curved glass backs that are particularly fragile. The battery sits beneath a mid-frame bracket requiring screw removal. For BLP765 battery installation OPPO Reno 3 and A91, the process involves disconnecting the battery connector (small 2-pin, pull by the plug, not the wires), removing the old battery (lightly adhered), and connecting the new battery before reassembly. Third-party repair shops typically charge $20-35 for labor. OPPO official battery replacement costs vary by region, typically $25-40 including service. For OPPO VOOC battery health maintenance: 1) Use only the original OPPO VOOC charger and cable — other chargers may not support the proprietary high-current protocol. 2) Keep battery level between 20% and 80% for daily use to maximize lifespan. 3) Avoid exposing the phone to high temperatures (above 40°C / 104°F). 4) For long-term storage (over 2 months), keep the battery at approximately 60% charge. 5) Perform a full calibration cycle after installation: drain until auto-shutoff, then charge uninterrupted to 100% using the original VOOC charger. For OPPO Reno 3 battery health tips, this calibration helps ColorOS accurately report battery percentage. Stop using immediately if the battery shows any swelling.

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