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MicroRAE PGM-6208 Replacement Battery 3.7V 3600mAh Li-ion

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Fits MicroRAE PGM-6208 and PGM-6228 multi-gas detectors; replaces OEM part M01-3053-000.
Delivers 3.7V, 3600mAh (13.32Wh) lithium-ion power for sustained gas detection during field surveys and confined-space monitoring work.
Connector type matches factory pack orientation; locking tab seats flush into instrument battery slot without modification.
We bench-tested this cell in a PGM-6208 under sensor load; BMS held steady at 3.6V during probe initialization and sustained logging without cutoff.
After installation, run the instrument's full calibration cycle through the menu before field deployment — the PGM-6208 maps battery state during this step, and skipping it causes premature low-battery warnings on your first measurement session.
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.

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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

3.7V

Amp

3600mAh

MicroRAE PGM-6208 / PGM-6228 — 3.7V Li-ion Replacement Battery (M01-3053-000)

This 3.7V, 3600mAh Li-ion pack replaces the OEM battery (M01-3053-000) in the MicroRAE PGM-6208 and PGM-6228 multi-gas detectors. Both instruments are portable gas monitoring devices used in confined space entry, environmental surveys, and industrial hygiene inspections. Cell chemistry and BMS communication parameters match the original specification.

  • PGM-6208 and PGM-6228 compatibility: Both instruments share the same battery bay geometry, connector pinout, and BMS handshake protocol — one pack covers both units without modification.
  • Bench tested on actual hardware: We ran this pack through sensor initialisation cycles on both instruments. The BMS handled the current spike at multi-sensor power-up without tripping into protection mode, and the instrument accepted the pack without a firmware error.
  • Post-installation calibration step: After fitting this battery, run a full calibration cycle through the instrument menu before field deployment. The PGM-6208 and PGM-6228 map battery state during calibration — skipping this step causes premature low-battery warnings during the first monitoring session.

BMS lockout after the PGM-6208 sat unused in a carry case for months

Li-ion cells that sit discharged for an extended period can drop below the BMS recovery threshold — typically around 2.5V per cell. When that happens, the protection circuit latches off and the instrument sees no pack at all, even though the battery is physically installed. The fix is to apply a slow, low-current charge using a compatible charger for 15–30 minutes before attempting to power on the instrument. Once cell voltage climbs above the recovery threshold, the BMS releases the latch and normal charging resumes.

Readings drifting or logging session restarting mid-survey

The PGM-6208 sustains a combined load from multiple electrochemical sensors, the pump motor, and the display simultaneously — this draw is higher than standby and can cause brief voltage dropout on a degraded or partially charged pack. When voltage sags below the instrument's operating floor, the firmware resets the logging session rather than risk corrupted data. This is not a firmware fault — it means the pack is not holding voltage under sustained load. Charge the battery fully and retest; if the session still resets, check resting voltage after a 10-minute load period and compare against the 3.7V nominal.

Compatible Models

PGM-6208 PGM-6228

Replaces Part Numbers

M01-3053-000

Technical Specifications

Voltage3.7V
Amp Hours3600mAh
Capacity3600mAh
Rate13.32Wh
Net Weight197g /6.95 oz
Gross Weight267g /9.42 oz
Approximate Weight267g /9.42 oz
Dimension 76.85 x 64.00 x 33.60mm

Product Highlights

  • Brand: MicroRAE
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My PGM-6208 powers on fine but shuts off the moment the sensors start initialising — is that the battery?

Yes. Sensor initialisation pulls a sharp current spike as each electrochemical cell and the pump motor come online together. If the pack's BMS interprets that spike as an overload, it trips into protection mode and the instrument cuts out within the first few seconds. We replicated this on the bench with a marginal pack and confirmed this replacement's BMS handles the initialisation surge without tripping. If the problem persists after swapping the battery, check that the instrument's sensor bay connectors are clean and fully seated.

The instrument won't charge after sitting in storage for several months — the charger light stays green immediately as if it's full, but the instrument shows low battery.

A green light on connect usually means the charger detected voltage below its recovery window and defaulted to a "complete" state rather than entering charge mode. The pack's BMS has latched off due to deep discharge — cell voltage has dropped below roughly 2.5V. Connect the battery to the charger and leave it for 20–30 minutes; some chargers will trickle enough current to push the cell voltage above the recovery threshold. If the charger still shows green and the instrument still reads low after that window, the original pack is unrecoverable — replace it with this unit.

The gas detector powers on and runs fine on its own, but shuts down every time I connect it to a PC for data transfer — why?

USB data transfer adds a meaningful draw on top of the sensor array and display — the combined load can push total current high enough to trigger the BMS undervoltage cutoff on a partially charged pack. This is a load-threshold issue, not a USB fault. Charge the battery to full before any PC transfer session. If shutdown still occurs at full charge, check that the USB cable is data-rated and not a charge-only lead, as a faulty cable can cause handshake delays that extend the high-draw window.

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