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SystemGear MET-1000 Replacement Battery 3.7V 1050mAh Li-ion

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From $22.99 USD $28.99
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Fits SystemGear MET-1000 two-way radio, replaces OEM battery MLB-1000.
Delivers 3.7V and 1050mAh capacity for full-shift portable radio operation.
Connector slides straight into MET-1000 battery slot with positive contact forward.
We ran discharge cycles on the bench; BMS accepted dock voltage handshake cleanly.
If the charger dock shows a fault LED on first insertion, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly — the MET-1000 platform requires a clean contact cycle to accept the new BMS handshake before charging begins.
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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

1050mAh

SystemGear MET-1000 — 3.7V Li-ion Replacement Battery (MLB-1000)

This is a 3.7V, 1050mAh Li-ion replacement battery for the SystemGear MET-1000 and MET-1000-101-00 two-way radios. It uses OEM part number MLB-1000 and slots directly into the original battery compartment. Capacity is 1050mAh — identical to the factory specification.

  • MET-1000 and MET-1000-101-00 compatibility: Both models share the same 3.7V voltage rail, connector footprint, and BMS handshake protocol, which is why a single cell pack covers the full MET-1000 platform without modification.
  • Bench tested on actual hardware: We ran this pack through charge, standby, and transmit-load cycles on the MET-1000 platform. The BMS responded correctly to PTT current spikes and held cutoff thresholds within spec throughout each cycle.
  • First-insertion contact check: If the charger dock shows a fault LED after seating this pack, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The MET-1000 dock requires a clean contact cycle to complete the BMS handshake before charging will begin.

Why the MET-1000 cuts out mid-transmission on a new pack

When a Li-ion cell ships from a warehouse, it arrives at storage voltage — typically around 3.6–3.7V, not at a full charge state. The MET-1000's BMS monitors the voltage drop during PTT transmit bursts. If the cell isn't fully charged before first use, that voltage sag can cross the BMS low-voltage cutoff threshold mid-transmission, dropping audio or killing the TX entirely. This is not a faulty pack. Run a full charge cycle first — the dock green LED confirms completion — then retest transmission.

Bar indicator showing one fewer bar than expected after fitting MLB-1000

The MET-1000 uses a voltage-threshold bar indicator, not a fuel gauge chip. A new cell at storage voltage reads lower than a freshly charged pack, so the radio displays fewer bars even though the cell is healthy. This is a voltage reading, not a capacity defect. Charge the pack fully — storage voltage sits near 3.65V, while a full charge pushes to 4.2V — and the bar indicator will reflect the correct charge state.

Compatible Models

MET-1000 MET-1000-101-00

Replaces Part Numbers

MLB-1000

Technical Specifications

Voltage3.7V
Amp Hours1050mAh
Capacity1050mAh
Rate3.89Wh
Net Weight24g /0.85 oz
Gross Weight49g /1.73 oz
Approximate Weight49g /1.73 oz
Dimension 53.20 x 35.30 x 7.10mm

Product Highlights

  • Brand: SystemGear
  • 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

The MET-1000 drops to low TX power partway through a long shift — is that the battery failing?

Sustained RF output draws consistent current from the cell, and as voltage sags under that load, the radio's firmware steps down transmit power to stay within the BMS voltage floor. On a degraded original pack this happens early; on a new MLB-1000 pack it should only occur near full depletion. If you're seeing this early in a shift, check that the pack charged fully — the dock green LED must illuminate before removal. A cell that charges correctly should hold transmit power through a normal shift without stepping down.

The charger dock fault LED never clears after inserting the new MLB-1000 — what's happening?

A fault LED that won't clear usually means the dock's acceptance circuit can't handshake with the BMS because the cell voltage is below the dock's minimum acceptance threshold, which is common on packs shipped in deep storage state. Remove the pack, wipe the gold contacts on both the battery and dock with a dry cloth, and reseat firmly. If the fault LED persists, try a different known-good dock — the MLB-1000 cell needs to read at least 3.0V for the dock to begin a recovery charge cycle.

The MET-1000 cuts out the moment PTT is pressed, even with a charged MLB-1000 installed — what triggers that?

Pressing PTT pulls a sharp current spike to power the transmit circuit, and if the BMS interprets that spike as an overcurrent event, it trips and kills output instantly. This is a BMS protection response, not a radio fault. It most often happens when the cell contacts are dirty or the pack is not fully seated, causing resistance that amplifies the apparent current draw. Remove the pack, clean the contact strip, reseat until it clicks, and confirm the dock completed a full charge to 4.2V before testing PTT again.

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