Replacement Battery for Microsoft RM-1085

Name: Microsoft RM-1085 Battery
Brand: Microsoft
SKU: SUR9559
Price: 20.88 USD
Availability: InStock
Rating: 4.6 (77 reviews)

3.85V 3340mAh Premium Li-ion Battery for RM-1085

This Microsoft RM-1085 replacement battery uses high-quality Li-ion cells to deliver stable 3.85V output and full 3340mAh capacity for reliable, long-lasting performance. Thoroughly tested for safety and compatibility, it ensures a secure fit and consistent power. Backed by a 1-year warranty.

SKUSUR9559
ConditionBrand New, Replacement
Voltage3.85V
Capacity3340mAh
Number of Cells1 cells
Cell TypeLi-ion
ColorBlack
Size*mm
Warranty12 Months
AvailabilityIn stock
Customer Reviews

Fast Shipping in the US

30-Day Money-Back Guarantee

One-Year Worry-Free Warranty

Lifetime Customer Support

Payment Methods

Delivery Methods

Note : 10.8V and 11.1V are compatible, they are in common use. 14.4V and 14.8V are compatible, they are in common use.

Product Overview

Restored Capacity and All-Day Reliability for Professional Users

Powered by premium Li-ion cells, this high-capacity Microsoft RM-1085 cell phone battery delivers a complete 3340mAh capacity and a stable 3.85V output, helping restore your Lumia to its original peak performance. Whether you are handling complex workloads in the office, attending back-to-back online meetings, or streaming media on the go, it provides consistent power without sudden voltage drops or unexpected interruptions. This replacement acts as a practical and dependable solution to extend the usability of your device, ensuring that you stay productive throughout the day without having to constantly hunt for a power outlet.

Precise Fit, Safe Integration, and Stable Compatibility

Engineered to strictly match original manufacturer specifications, this precision-molded replacement cell phone battery for RM-1085 ensures a precise, secure fit within the internal chassis of your device. It minimizes connection issues, unstable charging patterns, and hardware misalignments often associated with third-party components. Additionally, the integrated multi-layer smart chip provides robust protection against overcharging, high-temperature discharge, and short circuits, safeguarding your hardware during everyday use.

Cost-Effective Device Revival and Sustainable Practices

Installing a new RM-1085 cell phone battery is one of the most efficient ways to prolong the lifespan of your Lumia without the heavy expense of purchasing a completely new system. Instead of going through the time-consuming process of data migration, software reinstallation, and system configuration, you can restore full battery health through a simple hardware upgrade. Furthermore, this approach supports sustainable electronic practices by reducing electronic waste and keeping a fully functional computing device out of landfills for years to come.

Long Cycle Life and Enhanced Energy Density

Built using advanced high-density Li-ion cell technology, this premium tech-engineered cell phone battery for Microsoft RM-1085 is designed for a prolonged cycle life and sustained performance over time. It maintains a high retention rate even after hundreds of charging cycles, making it highly suitable for users who rely heavily on their mobile workstations. From intensive multitasking and academic study to high-definition video playback and travel, the battery offers reliable power across a diverse range of usage scenarios.

Comprehensive Warranty Coverage and Efficient Logistics

We stand behind the quality of our products; every replacement RM-1085 cell phone battery is backed by a 1-year warranty and a 30-day hassle-free return policy, providing complete peace of mind after your purchase. Orders are shipped directly from our US-based distribution centers to ensure fast, reliable delivery and minimal delays. If you encounter any questions regarding model verification or device performance, our dedicated support team is always ready to assist you.

Why Choose SurfaceBatteryShop.com?

Strict Factory Quality Control

Each battery undergoes full charge-discharge cycling tests before shipping. Consistent performance, long cycle life, and reliable daily durability.

Certified safety and reliable Surface replacement batteries

Certified Safety & Reliability

Built with multi-protection circuits (overcharge, over-discharge, overheat, short-circuit) and tested to meet UL, CE, FCC, RoHS standards. No swelling risks, stable voltage output, safe for daily use.

Fast shipping and worry‑free warranty service

Worry-Free Warranty & Support

Backed by a 12-month warranty and responsive customer service. Shop with confidence, we stand behind every replacement cell phone battery.

OEM‑compatible Surface battery precise fitting

OEM-Compatible Fit

Precision-engineered to match the specifications of the original battery, ensuring a precise fit for connectors, firmware compatibility, and power management systems.

Our Certification

IEC 62133

ISO 9001

MSDS

RoHS

UN38.3

Customer Reviews

Compatible Battery Part Numbers

Not all models compatible with the Microsoft RM-1085 battery are listed. If you are still unsure whether it is suitable for your device, please click on Request Battery Model for help.

BV-T4D

Works With These Lumia Models

RM-1085
LUMIA950XL
RM-1116

Disclaimer: All batteries and adapters sold on SurfaceBatteryShop.com are replacement parts. SurfaceBatteryShop.com is not affiliated with any original manufacturers. Any trademarks or model names listed above are identified solely for compatibility purposes.

Shipping Methods

Payment Methods

We accept the following payment methods
PayPal	Payments via PayPal do NOT require a PayPal account. PayPal is secure and free for buyers.
Credit or Debit Card	VISA, MasterCard, American Express, JCB, Diners Club, Maestro, and Laser Card, etc.
Bank Transfer	If no payment methods above are available to you, and your order amount exceeds $300, please contact our customer service to get our bank account and pay by bank transfer.
Google Pay	Google Pay-Easily pay online,in-store or send money.
Apple Pay	Apple Pay is easy to use and works with the Apple devices you use every day.You can shop safely in numerous stores,apps,and web pages without contact.

FAQs

Q: How do I know if this Microsoft RM-1085 replacement cell phone battery is compatible with my Lumia?

A: You can confirm compatibility through three simple steps:

Check the Model/Part Number: Find your original battery's part number or your Lumia model name and match it against our "Compatibility List" above.
Visual Match: Compare your original battery with our high-resolution product photos, paying close attention to the connector interface and shape.
Voltage Check: Ensure the voltage of the new battery matches your original one.

Note: If you are still unsure, please contact our support team or leave your model name in the order notes. We will perform a final compatibility check before the package leaves our warehouse.

Q: My old RM-1085 battery is swelling and lifting the screen. Will your replacement battery fix this safely?

A: Yes. Battery swelling (bulging) is a known issue for aging Lumia devices due to thermal stress. Our replacement battery is built with upgraded thermal-resistant Grade A cells and a premium control chip. It prevents localized overheating, effectively eliminating the risk of swelling while restoring your screen to its perfect, flush position.

Q: Are there any hidden costs when purchasing the Microsoft RM-1085 battery?

A: No. The total cost consists only of the product price and the shipping fee. We do not charge any hidden fees or surprise handling costs at checkout.

Q: Will my order be shipped from within the United States?

A: Yes, for most items. We stock and ship our inventory directly from our domestic US warehouses to ensure the fastest possible local delivery.

Standard Shipping: Usually takes 3–7 business days to arrive at your doorstep.
Tracking: A trackable USPS/FedEx shipping number will be emailed to you as soon as your order is dispatched.

Note: In the rare event of a temporary local stock shortage, our team will proactively contact you to confirm the shipping timeline before your order is processed.

Q: What should I keep in mind when placing an order?

A: To ensure you receive the correct battery and the best service, please follow these tips:

Verify Your Model: In the "Add a message to seller" box at checkout, please double-check and leave your Lumia model (e.g., RM-1085). Our team will manually verify compatibility before shipping.
Shipping Address: Please ensure your delivery address is 100% accurate. If you are paying via PayPal, ensure your PayPal-associated address matches your intended destination to avoid processing delays.
Contact Email: Use a frequently checked email address for your order. This is how we send tracking numbers and order confirmations.

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