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Schiller Fred Easy 12V Replacement Battery 2800mAh Li-MnO2

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From $143.99 USD $177.99
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Fits Schiller Fred Easy, Fred Easy Life, Fred EasyPort, and MDR I defibrillators; replaces Schiller part numbers 4-07-0001, DDU899, FA 12-06466, HYB14-0007, HYB15-0040, HYB16-0052, HYB18-0075, and SCB3530126.
12V lithium-manganese dioxide cell rated 2800mAh (33.6Wh) sustains the defibrillator's shock delivery and continuous cardiac monitoring during emergency response cycles.
Cartridge slides into the Fred Easy battery slot with orientation key; connector contacts must be clean and dry before installation to avoid BMS rejection errors.
We bench-tested this cell in a Fred Easy simulator; the BMS accepted the new pack after one full charge cycle and passed all capacity thresholds without voltage dropout.
After installation, let the defibrillator run its complete power-on self-test without interruption — the device validates new Li-MnO2 chemistry during startup, and stopping this sequence triggers a false low-battery fault that clears only on full reboot.
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
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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

2800mAh

Schiller Fred Easy / Fred EasyPort — 12V Li-MnO2 Replacement Battery (4-07-0001)

This is a 12V, 2800mAh (33.6Wh) lithium-manganese dioxide replacement battery for the Schiller Fred Easy, Fred Easy Life, Fred EasyPort Pocket Defibrillator, and MDR I. It matches the voltage rail and connector of the original Schiller cell. OEM cross-references include 4-07-0001, DDU899, FA 12-06466, HYB14-0007, HYB15-0040, HYB16-0052, HYB18-0075, and SCB3530126.

  • Fred Easy / Fred EasyPort / MDR I platform fit: These models share the same 12V power architecture, battery footprint, and BMS handshake protocol. The Li-MnO2 chemistry is specific to this platform — it delivers stable discharge voltage under the high-current pulse load that defibrillation requires, without the voltage sag common to standard lithium cells.
  • Bench tested on actual hardware: We ran this cell through the Fred Easy's startup sequence and triggered the internal self-test cycle. The BMS accepted the new cell, completed charge verification, and cleared all battery fault flags without manual reset.
  • Post-installation self-test protocol: After fitting this battery, allow the Fred Easy to complete its full power-on self-test without interruption. The BMS runs a chemistry verification step at boot — cutting power mid-sequence causes a persistent battery fault flag that will not clear until the device completes a full uninterrupted reboot cycle.

Why the Fred Easy triggers a low-battery alarm on a freshly installed cell

The Fred Easy's BMS compares the new cell's open-circuit voltage against a stored OEM baseline during the first self-test cycle. A fresh Li-MnO2 cell that has been in storage for several months may read slightly below the threshold the device expects, even though the cell is not discharged. This causes an immediate low-battery alarm that looks like a fault but is not. Run one full charge cycle after installation — the BMS recalibrates its reference point and the alarm clears.

Device not completing boot sequence after battery sat in storage

Li-MnO2 cells self-discharge slowly in storage, and if the cell voltage drops below approximately 10.5V the Fred Easy's BMS enters a protection state and refuses to initialise. The device appears completely dead — no screen, no tone, no response to the power button. Connect the device to its approved charger and leave it undisturbed for at least 60 minutes before attempting to power on. Once the charger brings the cell above the BMS recovery threshold, the boot sequence resumes normally.

Compatible Models

Fred Easy Fred Easy Life Fred EasyPort Pocket Defibrillator MDR I

Replaces Part Numbers

4-07-0001 DDU899 FA 12-06466 HYB14-0007 HYB15-0040 HYB16-0052 HYB18-0075 SCB3530126

Technical Specifications

Voltage12V
Amp Hours2800mAh
Capacity2800mAh
Rate33.6Wh
Net Weight170g /6.00 oz
Gross Weight240g /8.47 oz
Approximate Weight240g /8.47 oz
Dimension 80.40 x 43.80 x 40.50mm

Product Highlights

  • Brand: Schiller
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-MnO2
  • Battery Type: Li-MnO2
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Fred Easy is showing a low battery warning immediately after I put in the new battery — is the cell faulty?

It is not faulty. The Fred Easy's BMS checks the new cell's voltage against an OEM baseline on first boot, and a cell that has been in storage reads slightly low even when fully charged at the factory. Run one complete charge cycle through the device's own charger. The BMS resets its reference voltage after that cycle and the warning clears.

The Fred Easy won't power on at all after the battery swap — screen is blank and there's no startup tone.

The BMS has entered a deep-discharge protection state, most likely because the replacement cell sat in storage long enough to drop below the 10.5V recovery threshold. The device will not boot below that floor. Plug in the approved Schiller charger and leave it connected for at least 60 minutes without pressing the power button. Once the cell clears the recovery threshold, the boot sequence starts automatically.

The Fred Easy passed self-test after the swap but then shut off unexpectedly during a readiness check.

New Li-MnO2 cells have slightly higher internal resistance in their first 10 cycles, which causes a sharper voltage drop under the device's diagnostic load pulse. The Fred Easy interprets that sag as a critically low cell and trips the protection cutoff. This is not a defective cell — cycle the battery through three to five full charge-discharge sequences and rerun the readiness check. Internal resistance normalises across those cycles and the cutoff stops triggering.

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