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W-20 5040mAh 3.85V Li-ion Polymer replacement battery for Netgear Nighthawk M5 MR5000, M6 MR6500, MR5100 Pro, and MR5200 routers, front view showing battery surface and small 2-pin connector
W-20 5040mAh 3.85V replacement battery for Netgear Nighthawk M5 MR5000, M6 MR6500, MR5100 Pro, and MR5200 routers, back view showing model number W-20, capacity 5040mAh, and voltage 3.85V on spec label

W-20 5040mAh 3.85V Battery for Nighthawk M5 MR5000 M6 MR6500 MR5100 Pro MR5200 Router Replacement

Original price was: $28.99.Current price is: $21.99.

🔘 W-20 5040mAh 3.85V | 🔋 Li-ion Polymer | 📱 For Nighthawk M5 MR5000 / M6 MR6500 / MR5100 Pro / MR5200 Router

8 in stock

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SKU: W-20 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

✅ 5040mAh High Capacity – Restores full battery life for Nighthawk M5 MR5000, M6 MR6500, MR5100 Pro, and MR5200 routers

✅ 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: W-20
Capacity: 5040mAh (typical) / 19.4Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Netgear Nighthawk M5 MR5000, Nighthawk M6 MR6500, Nighthawk MR5100 Pro, Nighthawk MR5200
Package include: 1 x battery
Restore the portable WiFi performance of your Netgear Nighthawk router with this W-20 5040mAh replacement battery. The Nighthawk M5 (MR5000), M6 (MR6500), MR5100 Pro, and MR5200 are premium 5G mobile routers designed for travelers, remote workers, and businesses requiring reliable high-speed internet on the go. These devices support mmWave and Sub-6GHz 5G bands, delivering gigabit speeds for up to 32 connected devices. After extensive daily charging cycles, the factory battery capacity naturally degrades. This Li‑ion Polymer battery restores the full 5040mAh capacity, bringing back the extended runtime these routers were designed for. 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 Portable WiFi Endurance: The Nighthawk M5, M6, MR5100 Pro, and MR5200 are built for users who need WiFi wherever they go. The W-20 5040mAh battery powers these compact routers, providing the energy needed for hours of continuous tethering and connectivity. After 1‑2 years of daily use, the original battery capacity degrades significantly. Common symptoms include: the device requiring more frequent charging, shorter runtime than when new, unexpected shutdowns during use, or visible battery swelling. This W-20 replacement battery restores the factory‑spec 5040mAh capacity, giving you back the freedom to stay connected on the road, at cafes, or during travel. The battery uses high‑density cell technology with precise voltage control, ensuring stable output and compatibility with the device’s original charging circuitry.
Compatibility Note: Fits Netgear Nighthawk M5 MR5000, Nighthawk M6 MR6500, Nighthawk MR5100 Pro, and Nighthawk MR5200 only. Please confirm your battery model before ordering — W-20 is printed on your original battery. This battery is NOT compatible with Nighthawk M1 (MR1100), M2 (MR2100), M5 (MR5100 non-Pro), or other Netgear models. These routers use a distinct 5040mAh battery with specific dimensions and connector layout; using a different battery model may cause charging issues or incorrect battery reporting.

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Frequently Asked Questions

The W-20 5040mAh battery replacement is compatible with Netgear Nighthawk M5 MR5000, Nighthawk M6 MR6500, Nighthawk MR5100 Pro, and Nighthawk MR5200. If you need a W-20 battery for Nighthawk M5 MR5000 or a W-20 battery for Nighthawk M6 MR6500, this replacement battery is the exact match. For W-20 battery compatibility, please verify your battery model printed on the original unit — W-20 is the correct model for these routers. This battery is NOT compatible with Nighthawk M1 (MR1100), M2 (MR2100), M5 (MR5100 non-Pro), or other Netgear models. If your current Nighthawk MR5100 Pro battery or MR5200 battery now drains quickly or shuts down unexpectedly, this W-20 3.85V 5040mAh Li‑ion Polymer battery will restore full runtime and reliability.

The W-20 5040mAh battery for Nighthawk M5 MR5000, M6 MR6500, MR5100 Pro, and MR5200 has a typical capacity of 5040mAh (19.4Wh) and a rated voltage of 3.85V, with a charge limit of 4.4V. This W-20 3.85V 5040mAh Li‑ion Polymer battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For W-20 battery performance, the battery restores the factory runtime that these portable 5G routers are known for. The W-20 5040mAh battery performance provides reliable power for 5G connectivity, multi‑device tethering, and extended use during travel or work. For best W-20 battery performance Nighthawk M6 MR6500, allow 2‑3 full charge cycles after installation to calibrate the battery meter. If your original Nighthawk M5 MR5000 battery now requires more frequent charging instead of lasting through your workday, this replacement will restore the full 5040mAh capacity and stable voltage output.

Professional W-20 battery installation is recommended for Nighthawk M5 MR5000, M6 MR6500, MR5100 Pro, and MR5200. These routers have a sealed design that requires careful opening. To replace W-20 battery in Nighthawk M5 MR5000 or replace W-20 battery in Nighthawk M6 MR6500, the technician must carefully open the device casing to avoid damaging the internal components or display, disconnect the battery's small 2‑pin connector, remove the old battery, and install the new W-20 battery before resealing the device. For W-20 battery installation, improper handling can damage the device's internal components or compromise the casing seal. For W-20 battery health maintenance and Nighthawk M5 battery care tips: 1) Use the original charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 5040mAh cell. 3) Avoid exposing the device 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 device until it auto‑shuts off, then charge uninterrupted to 100%. For W-20 battery care tips Nighthawk MR5200, stop using immediately if the battery shows any swelling or deformation.

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