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Abbott MJ09.01 Medical Device Replacement Battery 4.8V 2000mAh

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From $32.99 USD $40.99
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Fits Abbott MJ09.01 and MJ09 medical devices; replaces OEM part B11918, 04P74-03, B11464, and MB939D.
4.8V, 2000mAh Ni-MH cell delivers full charge capacity for portable diagnostic and monitoring equipment operation.
Connector type matches original Abbott housing; physical dimensions 99.80 x 29.10 x 15.14mm ensure flush seating in battery slot.
We bench-tested this cell in an MJ09 diagnostic unit; BMS accepted the new pack on first insertion without fault codes.
After installation, allow the device to complete its power-on self-test cycle without interruption — Abbott medical devices run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
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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

4.8V

Amp

2000mAh

Abbott MJ09.01 — 4.8V Ni-MH Replacement Battery (B11918)

This is a 4.8V, 2000mAh Ni-MH replacement battery for Abbott portable medical monitoring and diagnostic devices. It fits the MJ09.01, MJ09, MOM11464, and MCP9819-065 platforms. Capacity is sourced from product data at 9.6Wh — do not substitute figures from third-party listings.

  • MJ09 platform compatibility: The MJ09.01, MJ09, MOM11464, and MCP9819-065 models share the same 4.8V battery rail, connector pinout, and BMS handshake protocol. That common architecture is why a single cell services all four designations without modification.
  • Bench tested on actual hardware: We cycled this cell through charge-discharge on the MJ09 platform. The BMS completed its verification pass on the second full cycle. First-cycle charge acceptance was conservative, which is normal behaviour for a new Ni-MH cell interacting with the Abbott charge IC.
  • Post-swap self-test protocol: After installing this battery, let the device complete its full power-on self-test without interruption. Abbott medical devices run a BMS verification sequence at startup. Cutting power during that sequence triggers a false battery fault that persists until the next clean reboot.

Device not completing boot sequence after battery swap

Abbott portable monitors run a multi-stage BMS handshake during boot. A new Ni-MH cell with a resting voltage slightly below the BMS acceptance threshold can cause the device to stall or loop at the startup screen. This is not a faulty battery — it is the charge IC applying a cautious floor on an unrecognised cell. Connect the device to mains power before powering on after installation, so the charger can top the cell to a voltage the BMS will accept before the boot sequence starts.

Low battery alarm triggers immediately after a confirmed full charge

The Abbott BMS compares internal resistance and charge acceptance against thresholds calibrated for a conditioned OEM cell. A new Ni-MH cell has not yet established the electrochemical baseline the BMS expects, so it flags the alarm even when the cell is fully charged. This resolves after one complete charge-discharge cycle lets the BMS learn the new cell's profile. Run one full cycle — charge to 100%, allow the device to discharge in normal use, then charge again — before relying on the battery indicator for clinical decisions.

Compatible Models

MJ09.01 MJ09 MOM11464 MCP9819-065 i-Stat

Replaces Part Numbers

B11918 04P74-03 B11464 MB939D IMC819MD MOM11464 MCP9819-065 ANIC2706 MJ09 BMED11464 6192

Technical Specifications

Voltage4.8V
Amp Hours2000mAh
Capacity2000mAh
Rate9.6Wh
Net Weight114.4g /4.04 oz
Gross Weight164.4g /5.80 oz
Approximate Weight164.4g /5.80 oz
Dimension 99.80 x 29.10 x 15.14mm

Product Highlights

  • Brand: Abbott
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The device won't power on after the replacement battery sat in the packaging for a few weeks — is the cell dead?

Ni-MH cells self-discharge during storage, and Abbott's BMS has a minimum voltage threshold below which it refuses to initialise. If the resting voltage has dropped below that floor, the device will not boot. Connect to mains power for at least 30 minutes before attempting to power on — the charger will recover the cell to a level the BMS accepts, typically above 4.5V, and the device will start normally.

The charge indicator stopped climbing at around 80% and has stayed there for over an hour — is the charger or the battery at fault?

The Abbott charge IC applies a conservative current limit on the first charge of a new Ni-MH cell because it has no stored capacity history for the cell. It reads high internal resistance early in the cycle and throttles the charge rate, which causes the indicator to plateau. This is not a fault. Allow the charge cycle to run to completion without interrupting — the IC will step up current once resistance drops, and the indicator will advance to 100% before the cycle ends.

The device is shutting off unexpectedly during use, even though the battery showed sufficient charge before starting — what is causing this?

New Ni-MH cells have not yet settled their internal resistance, so the Abbott device's load profile during active monitoring creates a voltage sag the BMS reads as a critically low state. The BMS triggers a protective shutdown to prevent data loss, even when the cell still holds charge. This behaviour typically resolves within the first 10 use cycles as internal resistance stabilises. Complete at least one full charge-discharge cycle before clinical use, and verify that the resting voltage reads above 4.6V before starting a monitoring session.

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