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Crestron TPMC-8X-BTPE Replacement Battery 7.4V 3600mAh

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Sale priceFrom $52.99 USD Regular price $65.99
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Fits Crestron TPMC-8X, TPMC-8X WiFi, and TPMC-8X-GA touchscreen panels; replaces OEM part TPMC-8X-BTPE.
This 7.4V, 3600mAh lithium-ion cell restores full wireless range and IR transmission to wall-mounted control interfaces.
Battery slides into the vertical slot with connector contacts facing the panel PCB; polarity marked on housing.
We ran load cycles on a bench TPMC-8X unit; the BMS accepted the cell on first charge with no fault codes.
On installation, verify the battery seats fully until the latch clicks — a loose contact will cause the panel to lose wireless uplink or show reduced button response range.

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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

7.4V

Amp

3600mAh

Crestron TPMC-8X Series — 7.4V Li-ion Replacement Battery (TPMC-8X-BTPE)

This is a 7.4V, 3600mAh Li-ion replacement battery for the Crestron TPMC-8X touchscreen control panel. It fits the TPMC-8X, TPMC-8X WiFi, and TPMC-8X-GA WiFi Touch Panel. The TPMC-8X-BTPE is the OEM part number this cell replaces directly.

  • TPMC-8X, TPMC-8X WiFi, TPMC-8X-GA compatibility: All three models use the same 7.4V battery rail, connector layout, and BMS handshake protocol. One cell fits all three without firmware or hardware changes.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the TPMC-8X platform. The BMS accepted the pack without faults, and the panel completed full boot and wireless registration as expected.
  • Post-install re-seating check: The TPMC-8X battery compartment uses a locking connector that must click fully into place. A partially seated connector causes the panel to report low battery or refuse to power on even with a fully charged cell — press the connector firmly until you hear the latch engage.

Why the TPMC-8X drops off the network after a battery swap

After installing a new cell, the TPMC-8X sometimes loses its WiFi association and fails to reconnect. This happens because a full power interruption during the swap clears the panel's volatile network state. The fix is to let the panel complete its full boot sequence — typically 60 to 90 seconds — before attempting any control commands. If the panel still shows offline, navigate to the network settings on the touchscreen and re-confirm the IP assignment or DHCP lease.

TPMC-8X touchscreen unresponsive after battery replacement

If the screen powers on but touch input does not register, the panel has likely booted into a calibration fault state triggered by the power gap during battery replacement. This is a known behaviour in Crestron touchpanel firmware when the battery is removed for an extended period. Hold the physical reset pinhole on the rear of the unit for five seconds to force a soft reset. After reboot, the touchscreen re-initialises the digitiser and normal input resumes — no reconfiguration of the control system is required.

Compatible Models

TPMC-8X TPMC-8X WiFi TPMC-8X-GA WiFi Touch Panel

Replaces Part Numbers

TPMC-8X-BTPE

Technical Specifications

Voltage7.4V
Amp Hours3600mAh
Capacity3600mAh
Rate26.64Wh
Gross Weight150g /5.29 oz
Approximate Weight150g /5.29 oz
Dimension 148.00 x 71.00 x 23.00mm

Product Highlights

  • Brand: Crestron
  • 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

I installed the new battery and the TPMC-8X panel won't turn on at all — what did I miss?

The most common cause is the battery connector not fully seated. The TPMC-8X uses a locking connector that requires a firm push until the latch clicks — a partial connection passes no power even if the cell is fully charged. Remove the battery, reinsert it with deliberate pressure until you hear the click, then attempt power-on. If the panel still does not respond, check that the cell voltage reads at least 7.0V with a multimeter before assuming a fault elsewhere.

The TPMC-8X panel shows battery icon but keeps dropping off the Crestron control system after the swap — is the battery faulty?

The battery is not the cause. A full power interruption during the swap clears the panel's volatile network state, and the TPMC-8X does not always auto-rejoin without prompting. Let the panel complete its full boot — wait at least 90 seconds — then open the network settings on the touchscreen and confirm the IP address or trigger a DHCP renew. The control system processor may also need a project reload if the panel remains offline after network re-confirmation.

The replacement battery drains noticeably faster than the original did when it was new — what causes that?

Fast drain on the TPMC-8X is almost always linked to the backlight staying active. If the panel's proximity sensor or screen timeout setting was reset during the power gap, the display stays on continuously instead of sleeping between interactions. Go into the panel's display settings and confirm the screen timeout is set — Crestron default is 30 seconds of inactivity. A stuck or partially pressed button on the bezel can also hold the panel awake and draw continuous power; inspect the bezel edges for physical debris keeping a button depressed.

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