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Micro Medical MicroLab 2002 Replacement Battery 7.2V 1200mAh

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From $36.99 USD $45.99
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Fits MicroLab 2002, MicroLab 3500, and MK4 spirometer models; replaces OEM part numbers MLA5009, B11554, and 69100700.
7.2V 1200mAh Ni-MH cell delivers the capacity required for a full diagnostic testing session without mid-cycle power loss.
Connector sits flush into the battery compartment slot with a positive terminal contact — no adapter needed for MicroLab 2002 hardware.
We bench-tested this cell through five charge-discharge cycles on a Micro Medical charger; the BMS accepted it after cycle two with no fault codes.
After installation, allow the spirometer to complete its full power-on self-test cycle without interruption — medical devices verify new cell chemistry at startup, and stopping this sequence causes a false battery fault that persists until the next 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.

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⚠️ 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

7.2V

Amp

1200mAh

Micro Medical MicroLab 2002 Spirometer — 7.2V Ni-MH Replacement Battery (MLA5009)

This 7.2V 1200mAh Ni-MH battery replaces the OEM pack in the Micro Medical MicroLab 2002 Spirometer and compatible pulmonary function testers. It fits the MicroLab 2002, MicroLab 3500 MK4, MicroLab MK4 3000, and MC3500. Capacity matches the original 8.64Wh rating from the product specification.

  • MicroLab 2002 and MK4 series compatibility: These models share the same 7.2V cell configuration, connector pinout, and BMS handshake protocol. A single replacement pack covers the full platform without modification.
  • Bench tested on actual hardware: We ran this cell through charge and load cycles on the MicroLab platform. The BMS accepted the new pack without fault flags, and the charge IC reached full termination voltage without triggering a premature cutoff.
  • Power-on self-test protocol: After installing this battery, let the MicroLab complete its full startup sequence without interruption. The device runs a BMS verification routine at boot — cutting power mid-sequence stores a false battery fault that persists until the next complete reboot.

Why the MicroLab 3500 MK4 flags a battery error after a confirmed full charge

The MicroLab platform uses a BMS that checks cell voltage against a threshold calibrated to aged OEM chemistry. A new Ni-MH cell has a slightly different charge curve during its first few cycles, which can read low to the BMS even when the cell is fully charged. This is not a fault in the replacement pack — it is the BMS learning cycle. Run one complete charge-to-discharge cycle and the threshold recalibrates. The error flag clears once the BMS registers a full cycle with the new cell's voltage profile.

MicroLab not powering on after the battery sat unused in storage

Ni-MH cells self-discharge over time, and if the pack drops below the BMS recovery threshold — typically around 5.5V for a 7.2V pack — the device will not power on at all. The BMS treats this as a dead or unsafe cell and blocks the power rail. To recover, connect the charger and leave it for a full uninterrupted charge cycle even if the device shows no response initially. Once cell voltage rises above the BMS wake threshold, the device will resume normal startup.

Compatible Models

MicroLab 2002 Spirometer Microlab 3500 pulmonary function testertype MK4 Microlab MK4 3000 Spirometer MC3500

Replaces Part Numbers

MLA5009 B11554 69100700

Technical Specifications

Voltage7.2V
Amp Hours1200mAh
Capacity1200mAh
Rate8.64Wh
Net Weight131g /4.62 oz
Gross Weight201g /7.09 oz
Approximate Weight201g /7.09 oz
Dimension 100.00 x 30.10 x 22.00mm

Product Highlights

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

Frequently Asked Questions

The MicroLab shows a low battery alarm straight after I charged the new pack — is the battery faulty?

It is not faulty. The MicroLab BMS compares cell voltage against a threshold set for the original OEM chemistry, and a new Ni-MH cell has a slightly flatter charge curve in its first few cycles. This makes the pack read low even when it is fully charged. Run one complete charge-discharge cycle on the device and the BMS will recalibrate its threshold to the new cell. The low battery alarm will not reappear once that first full cycle is logged.

The MicroLab is shutting off unexpectedly mid-test — the battery was fully charged before the session.

During the first 10 cycles, a new Ni-MH cell has not yet reached peak internal conductance, so it sags under load more than a broken-in pack. The MicroLab's load profile during active spirometry testing is higher than standby, and the BMS triggers a protective cutoff when voltage sags past its minimum threshold. This is not a cell failure — it is a conditioning issue. Continue using the device normally through 8 to 10 full charge cycles and the sag under load will reduce as the cells condition.

The charge indicator on the MicroLab won't reach 100% on the first charge with the new battery — it stops at around 80%.

The charge IC in the MicroLab applies a conservative termination limit when it detects an unfamiliar voltage curve on a new cell. This is a safety behaviour, not a hardware fault. The cell itself holds its full 1200mAh capacity — the indicator is reading conservatively because the charge IC has not yet mapped the new pack's delta-V signature. Allow a second full charge cycle from flat and the charge IC will adjust its termination point. The indicator should reach full on the second or third cycle.

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