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BLP877 5000mAh 3.87V Li-ion replacement battery for Realme 8i RMX3151, front view on white background showing battery surface and connector flex cable

BLP877 5000mAh 3.87V Li-ion Replacement Battery for Realme 8i RMX3151 18W Fast Charging

Original price was: $24.99.Current price is: $17.99.

🔘 BLP877 5000mAh 3.87V | 🔋 Li-ion | 📱 For Realme 8i RMX3151 18W Fast Charging

8 in stock

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SKU: BLP877 Category: Tags: , , ,
📦 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
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

✅ 5000mAh High Capacity – All-day battery life

✅ 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: BLP877
Capacity: 5000mAh / 19.35Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion
Compatible with: Realme 8i (RMX3151)
Package include: 1 x battery
Restore the battery performance of your Realme 8i with this BLP877 5000mAh replacement battery. Released in September 2021, the Realme 8i features a 6.6-inch FHD+ 90Hz IPS LCD display, MediaTek Helio G96 processor, and supports 18W fast charging. This Li-ion battery restores the original 5000mAh capacity for all-day use. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Compatibility Note: Fits Realme 8i (model RMX3151). Please confirm your battery model before ordering — BLP877 is printed on your original battery. If your Realme 8i battery drains quickly or won’t hold a charge, this BLP877 5000mAh battery replacement is the correct choice. Professional installation is recommended as the phone has a sealed design.
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 lifespan, use a certified Realme 8i charger. If you notice swelling or overheating, stop use immediately.

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Frequently Asked Questions

The BLP877 battery for Realme 8i RMX3151 is compatible with Realme 8i (model RMX3151). If you need a BLP877 battery replacement for RMX3151 Realme 8i, this is the exact match. The Realme 8i features a 6.6-inch FHD+ IPS LCD display with 90Hz refresh rate, MediaTek Helio G96 processor, and a massive 5000mAh battery design. For Realme 8i RMX3151 battery replacement, please verify your battery model before ordering — BLP877 is printed on your original battery. Please check your device model in Settings > About Phone before purchasing.

The BLP877 5000mAh battery replacement for Realme 8i has a capacity of 5000mAh (19.35Wh) and a rated voltage of 3.87V. Charge limit voltage is 4.45V. It is a Li-ion battery built with grade A cells and is CE, RoHS, and UN38.3 certified. For Realme 8i 5000mAh BLP877 battery, it fully supports the original 18W fast charging of the Realme 8i — providing all-day power with a 5000mAh capacity that lasts for up to 8 hours of continuous gameplay. This Realme 8i 18W fast charging battery delivers reliable performance with multi-layer safety protection against overcharge and short circuits.

Professional Realme 8i battery installation is strongly recommended for the BLP877 battery. The Realme 8i has a sealed design with strong adhesive. To replace Realme 8i battery RMX3151, the phone requires heating to soften adhesive and careful prying to avoid damaging the 6.6-inch 90Hz display. For BLP877 battery Realme 8i installation, improper handling may damage the display or the battery management system. If you attempt 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 $15-25 for labor. Realme official battery replacement costs vary by region, typically $15-20 for the Realme 8i.

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This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

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