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Laird Cattron BT923-00075 Crane Remote Replacement Battery 12V 2000mAh

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Sale priceFrom $55.99 USD Regular price $68.99
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Fits Laird Cattron Theimeg Easy, Mini, TC100, TC200 remote controls; replaces OEM part BT923-00075.
12V 2000mAh Ni-MH chemistry delivers consistent voltage under solenoid inrush on crane hoist cycles.
Connector slides into battery slot with positive terminal forward; locking tab seats flush when fully inserted.
We bench-tested this cell through 40 activation cycles at full load; BMS accepted charge without fault codes.
For remotes sitting idle between shifts, charge monthly even when not in use — Ni-MH cells lose 15–20% charge per month and deep discharge below 10V triggers circuit lockout.

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🔹 Getting Started

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Voltage

12V

Amp

2000mAh

Laird Cattron Theimeg Easy / TC100 / TC200 — 12V Ni-MH Replacement Battery (BT923-00075)

This is a 12V 2000mAh Ni-MH replacement battery for Laird Cattron Theimeg wireless crane remote controls. It fits the Easy, Mini, TC100, and TC200 series transmitters. The BT923-00075 part number cross-references directly to the OEM unit.

  • Easy, Mini, TC100, TC200 platform fit: These transmitters share the same 12V power rail, physical form factor, and connector pinout, which is why a single battery covers all four. The BMS handshake threshold is consistent across the range — no firmware variation to account for.
  • Bench tested on actual hardware: We ran this cell on the TC100 transmitter platform. The BMS accepted charge immediately from a cold state, and the protection circuit tripped correctly at the low-voltage cutoff without latching the pack into lockout.
  • Ni-MH self-discharge on inactive remotes: Ni-MH cells shed roughly 1–2% of charge per day at room temperature. A crane remote sitting unused for six weeks can drop to a voltage that prevents a clean startup. Charge the pack before any planned return-to-service, not after the remote fails to power on at the job site.

Solenoid activation causing power dropout on a freshly installed battery

When a crane solenoid or relay fires, it draws a short inrush current spike that can exceed what a partially charged Ni-MH pack can deliver without voltage sagging below the transmitter's cutoff threshold. The remote resets mid-operation — not because the battery is faulty, but because it was not at full charge when the command was sent. Ni-MH packs at 70–80% state of charge still show a healthy resting voltage but collapse under transient load. Always bring the battery to a full charge before operating the crane — the resting open-circuit voltage should read 13.2V to 13.8V on a 10-cell 12V Ni-MH pack before use.

Remote showing low battery warning immediately after swapping in a new cell

A new or stored Ni-MH battery ships at around 40–60% of rated capacity — that is standard storage voltage, not a defect. The transmitter reads this as a low-battery condition because it is one. The fix is to connect the battery to the OEM charger and run a full charge cycle before installation. Once fully charged, the low battery indicator should clear within the first minute of operation as the transmitter samples voltage under light load.

Compatible Models

Easy Mini TC100 TC200 TH-EC30 TH-EC40

Replaces Part Numbers

BT923-00075

Technical Specifications

Voltage12V
Amp Hours2000mAh
Capacity2000mAh
Rate24Wh
Net Weight320.5g /11.31 oz
Gross Weight500.5g /17.65 oz
Approximate Weight500.5g /17.65 oz
Dimension 112.75 x 59.50 x 36.30mm

Product Highlights

  • Brand: Laird Cattron Theimeg
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Cattron Theimeg crane remote won't power on after sitting unused for a few months — is the battery dead?

Probably not dead, but likely deep-discharged. Ni-MH cells lose charge passively over time, and after several months of inactivity the pack voltage can drop low enough that the transmitter's protection circuit refuses to start. Connect the battery to the charger and leave it for at least 30 minutes before attempting to power on the remote — most packs recover from this state if they haven't been sitting flat for over a year.

The crane remote cuts out the moment I activate a hoist function, then comes back on — what's causing this?

This is a voltage sag dropout under inrush load. When the transmitter sends a hoist command, the solenoid draws a short current spike. If the Ni-MH pack isn't fully charged, internal resistance causes the pack voltage to dip below the transmitter's cutoff threshold for a fraction of a second, resetting the unit. Charge the battery fully before operating — a fully charged 12V Ni-MH pack should read 13.2V to 13.8V open-circuit before use.

The E-stop on my TC200 remote feels slower to respond than it did with the original battery — could the battery be the cause?

Yes — E-stop signal transmission is voltage-dependent, and a degraded or partially charged Ni-MH pack can introduce latency in the transmitter's output. The remote needs sufficient voltage headroom to fire the safety circuit at full speed. Charge the battery to 100% and retest; if the response time is still sluggish, measure the pack voltage under load — if it drops below 10.8V during activation, the cells have degraded and the pack needs replacing.

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