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Motorola MTP600 Replacement Battery 3.7V 1650mAh Li-ion

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From $47.99 USD $59.99
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Fits Motorola MTP600, MTP3000, MTP3100, MTP3150, and eight additional compatible models in the MTP series portfolio.
3.7V Li-ion at 1650mAh capacity delivers sustained transmit power through extended field shifts without mid-transmission sag.
Connector seats into the Motorola MTP-series slot with positive terminal forward; locking tab seats flush against the radio frame.
Bench testing on an MTP3100 showed clean BMS acceptance through full charge cycles with no overcurrent events during PTT transmission spikes.
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 Motorola platform requires a clean contact cycle to accept the new BMS handshake before charging begins.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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

3.7V

Amp

1650mAh

Motorola MTP600 / MTP3000 Series — 3.7V Li-ion Replacement Battery

This 3.7V, 1650mAh Li-ion battery fits the Motorola MTP600, MTP3000, MTP3100, and MTP3150 portable land mobile radios, along with eight additional MTP-series variants. It matches the original pack's connector pinout, housing dimensions, and BMS communication protocol. No OEM part number is published for this platform, but the physical and electrical spec match has been confirmed against production units.

  • MTP600 and MTP3000 series compatibility: These models share a common battery bay geometry, three-pin connector layout, and BMS handshake voltage. One pack covers the full listed range without adapter or modification.
  • Bench tested on actual hardware: We cycled this pack through full charge, PTT transmit load, and rest discharge on MTP3100 hardware. The BMS held cutoff at the correct low-voltage threshold and responded normally to the dock's charge-initiation signal.
  • First-insertion contact check: 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 MTP platform requires a clean contact cycle before the dock accepts the new BMS handshake and begins charging.

Why the MTP600 cuts out mid-transmission on a freshly inserted pack

The MTP600 draws a sharp current spike the moment PTT is pressed — transmit current can exceed the steady-state draw by a factor of three or more. A new cell shipped at storage voltage sits around 3.6–3.7V, which is close enough to the BMS low-voltage cutoff that a sudden TX load can pull the terminal voltage below the trip threshold. The BMS interprets this as an unsafe condition and cuts the output. One full charge cycle brings the cell to 4.2V and gives the BMS adequate headroom to absorb the transmit spike without tripping.

Bar indicator showing one fewer bar than expected after fitting a new pack

The MTP series uses simple voltage-threshold bar indicators — each bar corresponds to a voltage band, not a calculated percentage. A new cell at storage voltage reads in the lower band and displays fewer bars, which looks like a faulty or underspec pack but is not. Charge the battery fully in the dock until the LED goes solid green, then reinsert. The indicator will show the correct level once the cell is at full charge voltage.

Compatible Models

MTP600 MTP3000 MTP3100 MTP3150 MTP3200 MTP3250 MTP3500 MTP3550 MTP6000 MTP6550 MTP6650 MTP6750

Technical Specifications

Voltage3.7V
Amp Hours1650mAh
Capacity1650mAh
Rate6.11Wh
Net Weight67g /2.36 oz
Gross Weight217g /7.65 oz
Approximate Weight217g /7.65 oz
Dimension 104.20 x 52.40 x 23.80 mm

Product Highlights

  • Brand: Motorola
  • 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 MTP3100 cuts out the moment I press PTT — new battery, full signal. What's wrong?

The transmit current spike on PTT briefly pulls terminal voltage below the BMS cutoff threshold when the cell is at storage voltage rather than full charge. The BMS trips to protect the cell and kills output mid-transmission. Charge the pack completely in the dock before first use — once the cell reaches 4.2V, the BMS has enough headroom to handle the TX surge without cutting out.

The charger dock LED blinks amber and never clears after I fit this battery. How do I fix it?

A blinking amber or fault LED usually means the dock cannot read a valid BMS signal — most often caused by contamination or oxidation on the gold contact strip. Remove the pack, wipe the contacts on both the battery and the dock cradle with a dry cloth, and reseat with firm downward pressure. If the fault clears and the LED goes green, the BMS handshake completed correctly; if it persists, check that the cell voltage is above 3.0V with a multimeter before attempting another charge cycle.

My MTP600 drops to low TX power partway through a long shift — battery looks charged but signal weakens.

This is voltage sag under sustained RF output, not a capacity issue. As the cell depletes past roughly 3.5V, internal resistance rises and the pack can no longer maintain the voltage rail needed for full transmit power, so the radio steps down TX output to stay within operating limits. It is not a fault — it is the expected end-of-charge behaviour for a 1650mAh Li-ion cell under continuous RF load. Swap to a charged spare pack when the drop occurs and charge the depleted pack immediately to prevent the cell sitting at low voltage between shifts.

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