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Tesla Battery Module BMS Cell Tap Board


The Stealth Battery Module BMS Cell Tap Board is built to replace the OEM satellite boards found in Tesla Model S and Model X battery modules so you can use the modules with an aftermarket BMS. Fits 60, 70, 75, 85, 90, and 100 kWh series modules.

Designed as a cell tap which transfers connections from 6 cells and two thermistors to your BMS of choice. Tesla temperature sensors are 10k thermistors and are NOT polarity sensitive. Not all applications will use both thermistors, but we recommend using at least one of the two for monitoring temperatures to maintain battery health. Comes with 12-pin connector and pins. Crimp pins fit 22-18 AWG cell tap wires provided with the Dilithum BMS Satellites. 

Direct replacement for stock Tesla BMS Board, uses existing connectors from the battery module and uses the stock plastic rivets.

No software required, this board just plugs into your module and BMS harness.

Please use Molex Mini-fit Jr. crimper part# 638190900H. Other crimpers may work as well.


Two different versions: Fits Tesla modules with the wired single white style plug OR two ribbon band style Blue/Red plugs.

~NOTE: Modules with cell tap wires that are soldered to the BMS boards are not compatible with these boards. We recommend just using Molex mini-fit Jr. style plugs direct to the wires.~

Wiring diagrams for BMS 24 and 18 cell Satellites:

Stealth to BMSS 24

Stealth to BMSS 18

Included Components

  • Stealth cell tap board (per connector type ordered)
  • Molex Connector and pins

Save original Tesla mounting hardware for installation.