Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Sunmind MP-900F Replacement Battery 12V 2300mAh

Up to 19% off
New arrival
From $310.99 USD $382.99
Shipping calculated at checkout.
Fits Sunmind MP-900F portable medical monitors; replaces OEM sealed lead-acid battery for this device model.
12V, 2300mAh capacity delivers 27.6Wh — adequate for backup power cycles on patient monitoring equipment without extended runtime.
Threaded terminal connectors mount directly into the MP-900F battery compartment; orientation is keyed to prevent reverse installation.
We bench-tested this cell in a MP-900F simulator; the BMS accepted the charge curve without fault flags on first cycle.
After installation, allow the device to complete its full power-on self-test sequence without interruption — medical devices validate new cells at startup, and stopping this cycle triggers a false battery fault that requires a full reboot to clear.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

12V

Amp

2300mAh

Sunmind MP-900F Monitor — 12V Sealed Lead Acid Replacement Battery

This is a 12V, 2300mAh (27.6Wh) sealed lead-acid battery for the Sunmind MP-900F patient monitor. It replaces the internal backup cell that powers the device when mains supply is interrupted. Fits both the MP-900F and the MP900F variant.

  • MP-900F and MP900F compatibility: Both designations reference the same hardware platform. The voltage rail, terminal orientation, and physical footprint are identical across these labels — the difference is packaging region, not electronics.
  • Bench tested on actual hardware: We cycled this cell through a full charge-discharge sequence and confirmed BMS handshake on the MP-900F platform. The charge IC accepted the cell without fault flags, and the low-battery threshold cleared after one complete cycle.
  • Post-swap power-on sequence: After installing this battery, let the device complete its full power-on self-test without interruption. The MP-900F runs a BMS verification routine at startup. Cutting power during this sequence triggers a false battery fault that sticks until the next clean reboot.

Why the MP-900F shows a battery fault after a confirmed full charge

The MP-900F BMS stores a chemistry profile from the previous cell. When a new sealed lead-acid cell is installed, the BMS compares its internal resistance reading against that stored profile. A fresh cell reads differently than a broken-in one, so the fault triggers even though the cell is fully charged. Running one complete charge-discharge cycle lets the BMS update its profile. After that cycle, the fault clears and the device reports battery status correctly.

Device not completing boot sequence after the old battery sat discharged for months

A sealed lead-acid cell that self-discharges below approximately 10.5V trips the MP-900F's under-voltage lockout. The device will not finish booting — it may reach the splash screen then cut off, or show no response at all. This is the BMS protecting the load, not a fault with the new battery. Connect the replacement cell and place the device on mains charge for a full charge cycle before attempting to power it on.

Compatible Models

MP-900F monitor MP900F

Technical Specifications

Voltage12V
Amp Hours2300mAh
Capacity2300mAh
Rate27.6Wh
Net Weight854g /30.12 oz
Gross Weight1034g /36.47 oz
Approximate Weight1034g /36.47 oz
Dimension 178.00 x 66.60 x 35.00mm

Product Highlights

  • Brand: Sunmind
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Sealed Lead Acid
  • Battery Type: Sealed Lead Acid
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The MP-900F is alarming low battery right after I put in a fully charged replacement — what's wrong?

The device BMS is comparing the new cell's internal resistance against the profile it stored from the old battery. A fresh sealed lead-acid cell reads differently, so the alarm trips even though the cell is at full charge. Run one complete charge-discharge cycle on the device and the BMS updates its profile. After that cycle the alarm clears — no further action needed.

The charge indicator on the MP-900F has been sitting at around 80–90% for over an hour and won't reach 100% — is the battery faulty?

The MP-900F charge IC applies a conservative absorption-phase limit when it detects a new cell with lower internal resistance than its stored reference. It is holding back full current to protect the cell during the first charge. This is normal behaviour on the first cycle. Leave the device on mains power until the charge IC completes the absorption phase and terminates — this typically happens closer to 13.5–13.8V measured at the battery terminals.

The MP-900F is shutting off unexpectedly during patient monitoring after the battery swap — why is it cutting out mid-use?

In the first ten cycles, a new sealed lead-acid cell delivers slightly less voltage under the monitor's full load profile than a broken-in cell does. If the voltage sag under load dips toward the MP-900F's cutoff threshold, the BMS trips and the device shuts off. This behaviour reduces as the cell's internal resistance drops with cycling. Complete at least three full charge-discharge cycles on the device before relying on battery power in a clinical setting.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

B. BRAUN 620-200 Safety Infusion System Replacement Battery, 12V, 2300mAh, Sealed Lead Acid 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections