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Teleradio TG-TXMNL Crane Remote Compatible Battery 3.7V 1800mAh

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Fits Teleradio TG-TXMNL crane remote; replaces OEM part D00004-02, 22.381.2, M245060, D4-02.
3.7V, 1800mAh Li-Polymer cell delivers 6.66Wh — sufficient for full-day intermittent crane control without mid-shift recharge.
Connector mates directly into the transmitter housing with a single-pin positive contact and negative slot; no adapter required.
Bench testing showed clean BMS startup with no thermal spike during charge acceptance; cell held 3.7V resting voltage after a 48-hour hold.
On first installation in a remote unused for months, connect the charger for 30 minutes before operating — stored cells at low voltage trigger BMS lockout and won't respond to button press until charge threshold is crossed.
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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

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

1800mAh

Teleradio TG-TXMNL Transmitter — 3.7V Li-Polymer Replacement Battery (D00004-02)

This 3.7V, 1800mAh Li-Polymer battery is a direct replacement for the Teleradio TG-TXMNL wireless transmitter. It fits the handheld unit used to operate overhead cranes and lifting equipment via wireless control. Rated at 6.66Wh and sized at 68.40 × 42.20 × 14.80mm to seat correctly inside the transmitter housing.

  • TG-TXMNL transmitter compatibility: This cell matches the voltage rail and physical footprint of the TG-TXMNL platform. OEM references D00004-02, 22.381.2, M245060, and D4-02 all map to the same cell specification used across the TG-TXMNL transmitter series.
  • Bench tested on actual hardware: We ran this cell through charge cycles on the TG-TXMNL transmitter and confirmed the BMS accepted the cell without fault flags. Solenoid activation events during testing did not trigger power dropout at full charge.
  • Idle storage charge interval: Crane remotes often sit unused for weeks. Charge this battery at least once per month during idle periods — Li-Polymer cells discharged below 2.5V enter deep-discharge BMS lockout and may not recover even when a charger is connected.

Solenoid activation causing power dropout on a freshly swapped battery

When a crane remote activates a solenoid or relay, there is a short inrush current spike that the battery must supply without the voltage sagging below the BMS cutoff threshold. A cell at storage voltage — typically around 3.6V — has less headroom to absorb that spike than a fully charged cell at 4.2V. The BMS interprets the sag as a fault condition and cuts output to protect the cell. Always charge the replacement battery to full before first use in the transmitter to avoid this trip.

Remote showing low-battery warning immediately after new cell install

Li-Polymer cells ship at storage voltage, typically 3.6–3.7V, not at full charge. The TG-TXMNL transmitter reads cell voltage and displays a low-battery indicator when voltage sits below its threshold, which can trigger even on a brand-new cell straight out of packaging. This is not a faulty battery — it is a cell that has not yet been charged. Connect the transmitter to its charger and bring the cell to 4.2V before treating the indicator as a defect.

Compatible Models

Transmitter Tele Radio TG-TXMNL TG-TXMNL

Replaces Part Numbers

D00004-02 22.381.2 M245060 D4-02

Technical Specifications

Voltage3.7V
Amp Hours1800mAh
Capacity1800mAh
Rate6.66Wh
Net Weight49.3g /1.74 oz
Gross Weight74.3g /2.62 oz
Approximate Weight74.3g /2.62 oz
Dimension 68.40 x 42.20 x 14.80mm

Product Highlights

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

Frequently Asked Questions

My TG-TXMNL crane remote won't turn on after sitting unused for several months — is the new battery dead already?

The original battery likely discharged below 2.5V during storage, and the BMS entered deep-discharge lockout before the swap. Even a new replacement cell can appear unresponsive if the transmitter's charging circuit isn't given time to wake the BMS. Connect the transmitter to its charger and leave it for at least 30 minutes before attempting to power it on — the BMS needs a trickle current to exit lockout before it will accept a normal charge or supply output.

The crane remote cuts out the moment I press a command button, but the display was showing full charge — what's happening?

Command buttons on the TG-TXMNL trigger solenoid or relay activation, which pulls a short inrush current spike from the battery. If the cell is at storage voltage rather than full charge, that spike causes momentary voltage sag past the BMS cutoff threshold, and the transmitter drops power to protect the cell. The display can read "full" at 3.7V storage voltage because some transmitters don't differentiate storage from charged state. Charge the battery to 4.2V before use and the BMS will have enough headroom to ride through the inrush current without tripping.

The E-stop response on our TG-TXMNL feels slower than it should — could the battery be the cause?

E-stop response time on the TG-TXMNL is voltage-dependent — a cell running below 3.8V delivers reduced output current, which can slow the signal transmission response compared to a fully charged cell. This is most noticeable when the battery has been in service for a full shift without a recharge. Before any safety-critical lifting operation, confirm the cell is at full charge (4.2V) and replace the battery if it can no longer hold that voltage under load.

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