Description
Package content: 1 x battery
Battery model: BAT20ZN1308500 (Interchangeable with BAT18735500)
Capacity: 8500mAh (Typical) / 32.73Wh | 8200mAh (Rated)
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-Polymer (with built-in PCM protection board)
Compatible with: Doogee S86, Doogee S86 Pro
Package include: 1 x battery
Revitalize your Doogee rugged smartphone with this BAT20ZN1308500 8500mAh replacement battery. Designed for Doogee S86 (6GB+128GB) and S86 Pro (8GB+128GB) — both IP68/IP69K waterproof and dustproof rugged phones launched in 2021. These devices feature a large 6.1-inch HD+ display, MediaTek Helio P60 processor, and support 24W fast charging via USB Type-C. This Li-Polymer battery delivers the factory-rated 8500mAh capacity, providing up to 27 days of standby time, 47 hours of talk time, or 16 hours of 3D gaming on a single charge. For reference, third-party retailers sell this battery for approximately $25 to $82.
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 24W fast charging capability allows the phone to recharge quickly — fully charge the massive 8500mAh battery in about 3 hours with a 24W USB-C charger. The phone also supports OTG reverse charging to power other devices. Professional installation is recommended as the battery is not user‑replaceable and the phone has a rugged sealed design.
Compatibility Note: Please power down your device and check your original battery label before ordering. Ensure the model number printed matches BAT20ZN1308500. This battery is compatible with Doogee S86 and Doogee S86 Pro. The battery is also interchangeable with BAT18735500 — both models fit the same devices. Note: Two different label printing styles are used for this battery (both are identical in capacity, voltage, and performance). We ship either version randomly. The phones have an IP68/IP69K water/dust resistance rating — professional installation is required to maintain this protection after replacement. Professional installation is recommended as the phone has a sealed design with strong adhesive.
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 24W fast charging performance, use a certified USB Type-C charger (9V/2.6A) supporting Power Delivery or Quick Charge. If you don’t use the phone 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.
✅ Condition: Brand New – Never used, factory‑tested quality
✅ 8500mAh High Capacity – Factory-rated for 27-day standby
✅ 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.
✅ 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 Period | 90 days from delivery | 15-30 days from order confirmation |
| When It Starts | 📦 Upon delivery | ⚠️ Upon order confirmation (even before you receive it) |
| Claims Handling | We do it directly — email us | Automated dispute system, seller dependent |
| After Window Expires | Still can contact us for support | No 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; actual delivery may be affected by customs, weather, or other unforeseen circumstances.
| Destination | Freight (USD) | Est. Delivery Time |
|---|---|---|
| United States | $7.80 | 8-20 days |
| Canada | $6.80 | 18-45 days |
| Mexico | $10.00 | 30-60 days |
| Germany, France, United Kingdom, Greece | $6.50 | 18-45 days |
| Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus | $8.00 | 18-45 days |
| Croatia, Finland, Lithuania, Latvia, Slovenia | $8.00 | 30-60 days |
| Romania | $14.00 | 30-60 days |
| South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan | $7.50 | 18-45 days |
| United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil | $18.00 | 25-60 days |
* Delivery times are estimates; actual delivery may be affected by customs or other factors. If your country is not listed, we are currently unable to ship batteries to that destination.
🇧🇷 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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