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BAT25738500 8500mAh 3.85V Li-ion Polymer replacement battery for Doogee S86 and S86 Pro, front view showing battery surface with model number BAT25738500, capacity 8500mAh, voltage 3.85V, and connector flex cable
BAT18735500 8500mAh 3.85V Li-ion Polymer replacement battery for Doogee S86 and S86 Pro, front view showing battery surface with model number BAT18735500, capacity 8500mAh, voltage 3.85V, and connector flex cable
BAT25738500 8500mAh 3.85V Li-ion Polymer replacement battery for Doogee S86 and S86 Pro, interchangeable with BAT20ZN1308500 and BAT18735500, back view showing spec label with model number, capacity 8500mAh, and voltage 3.85V
BAT20ZN1308500 8500mAh 3.85V Li-ion Polymer replacement battery for Doogee S86 and S86 Pro, front view showing battery surface with model number BAT20ZN1308500, capacity 8500mAh, voltage 3.85V, and connector flex cable

BAT25738500 BAT20ZN1308500 8500mAh 3.85V Battery for Doogee S86 / S86 Pro IP68

Original price was: $46.99.Current price is: $33.99.

🔘 BAT25738500 8500mAh 3.85V | 🔋 Li-ion Polymer | 📱 For Doogee S86 / S86 Pro IP68 24W Fast Charging

8 in stock

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SKU: BAT20ZN1308500 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

✅ 8500mAh High Capacity – Restores full battery life for Doogee S86 and S86 Pro

✅ 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: BAT25738500 / BAT20ZN1308500 (also compatible with BAT18735500)
Capacity: 8500mAh (typical) / 32.73Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Doogee S86, Doogee S86 Pro
Package include: 1 x BAT25738500 battery
📌 Important Note: This listing ships with model BAT25738500. This battery is fully interchangeable with BAT20ZN1308500 and BAT18735500 — all three model numbers are identical in capacity, voltage, performance, and physical dimensions. The only difference is the label printed on the battery. If your original battery shows BAT20ZN1308500 or BAT18735500, this BAT25738500 is the correct replacement.
Restore the massive battery capacity of your Doogee rugged smartphone with this 8500mAh replacement battery. The Doogee S86 and S86 Pro are IP68/IP69K waterproof and dustproof rugged phones launched in 2021, featuring a 6.1-inch HD+ display, MediaTek Helio P60 processor, and support for 24W fast charging via USB Type-C. After years of use, the original battery capacity naturally degrades. This Li-ion Polymer battery restores the full 8500mAh capacity — one of the largest batteries available in any smartphone — providing up to 27 days of standby time, 47 hours of talk time, or 16 hours of 3D gaming on a single charge. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, short circuit, and overcurrent. CE, RoHS, and UN38.3 certified.
Three Compatible Model Numbers — One Battery: This battery is available under three different model numbers: BAT25738500 (the version shipped in this listing), BAT20ZN1308500, and BAT18735500. All three are identical in capacity, voltage, performance, and physical dimensions — they are simply different labeling variants used across production batches. Regardless of which model number is printed on your original battery, this BAT25738500 is the correct match for your Doogee S86 or S86 Pro. The 24W fast charging capability allows the massive 8500mAh battery to be fully charged in approximately 3 hours with a 24W USB-C charger (9V/2.6A). The phone also supports OTG reverse charging to power other devices. Common signs that the original battery needs replacement include: the phone requiring more frequent charging, shorter runtime than when new, unexpected shutdowns at 15-25% battery remaining, or visible battery swelling. This replacement restores the original endurance, allowing you to continue using your rugged Doogee phone without interruption.
Compatibility Note: Fits Doogee S86 and Doogee S86 Pro only. Please confirm your battery model before ordering — BAT25738500, BAT20ZN1308500, or BAT18735500 printed on your original battery. All three model numbers are interchangeable and work with both devices. This battery is NOT compatible with Doogee S86 Plus, Doogee S88 Pro, Doogee S96 Pro, or other Doogee models. The phones have an IP68/IP69K water/dust resistance rating — professional installation is required to maintain this protection after replacement.

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Frequently Asked Questions

The BAT25738500 / BAT20ZN1308500 battery for Doogee S86 is compatible with Doogee S86 (6GB+128GB) and Doogee S86 Pro (8GB+128GB). This battery is also fully interchangeable with BAT18735500 — all three model numbers use the same 8500mAh Li-ion Polymer cell with identical capacity, voltage, and dimensions. If your original battery shows BAT20ZN1308500 or BAT18735500, this BAT25738500 is the correct replacement. For BAT25738500 battery for Doogee S86 compatibility, please verify your device model in Settings > About Phone. This battery is NOT compatible with Doogee S86 Plus, Doogee S88 Pro, Doogee S96 Pro, or other Doogee models. If your Doogee S86 battery replacement is needed because the phone drains quickly or won't hold a charge, this BAT25738500 battery will restore full performance.

The BAT25738500 8500mAh battery for Doogee S86 has a typical capacity of 8500mAh (32.73Wh) and a rated voltage of 3.85V, with a charge limit of 4.4V. This 8500mAh 3.85V Li-ion Polymer battery for Doogee S86 Pro is built with Grade A cells and is CE, RoHS, and UN38.3 certified. For Doogee S86 battery life after replacement, expect up to 27 days of standby time, 47 hours of talk time, or 16 hours of 3D gaming on a single charge. The Doogee S86 8500mAh battery performance is among the best available in any smartphone. Charging the Doogee S86 battery with a 24W USB-C charger (9V/2.6A) supporting Power Delivery or Quick Charge takes approximately 3 hours for a full charge. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original battery now requires more frequent charging or shuts down at 15-25% remaining, this replacement will restore the original endurance.

Professional Doogee S86 battery installation is strongly recommended. The Doogee S86 and S86 Pro have sealed rugged designs with IP68/IP69K water and dust resistance ratings — IP68 means the phone can be submerged in up to 1.5 meters of water for 30 minutes, while IP69K provides protection against high-pressure, high-temperature water jets. To replace Doogee S86 battery, the process requires heating to soften adhesive, careful prying to avoid damaging the display or waterproof seals, and proper resealing with fresh adhesive to maintain IP68/IP69K water resistance after replacement. For BAT25738500 battery installation in Doogee S86, water resistance may be compromised if the phone is not properly resealed. Third-party repair shops typically charge $20-40 for labor, and IP68/IP69K water resistance may not be fully guaranteed after non-professional repair. For Doogee S86 battery health maintenance: 1) Use a certified 24W USB-C charger (9V/2.6A) supporting Power Delivery or Quick Charge for optimal charging. 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), 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 Doogee S86 battery care tips, stop using immediately if the battery shows any swelling.

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