BSM3 / BATTERY OFF-GAS

Alarm within 20 seconds of first venting in third-party testing.

BSM3 detects hydrogen in cell off-gas and sends an alarm to your BMS.

Tested by TÜV Rheinland Taiwan on an overcharged LFP cell. See the results below ↓

Discuss your application →
Illustration of a battery pack cutaway with one cell venting; blue gas and H₂ are conceptual annotations, not a photograph of the test apparatus
Illustration

Third-party test · TÜV Rheinland Taiwan · Report CN25DAKO 001

16 sSample 1
20 sSample 2
17 sSample 3

Time from first cell venting to BSM3 alarm

① LFP cell② BSM3 × 3③ Alarm beacons
Illustration of the test setup. Three BSM3 samples are mounted under the lid inside the test box, above a single LFP cell. Each is wired to an alarm beacon outside the box.

Test conditions

  • LFP cell, 3.2 V / 25 Ah
  • Overcharged at 0.5C until first venting
  • 20 L enclosed test box, 25 ± 5 °C ambient

WHAT HAPPENS NEXT

Turn the alarm into action.

BSM3 hydrogen alarm module

BSM3

Detects hydrogen

GPIO alarm

Your BMS can:

  • Alert operators and the EMS
  • Stop charging or disconnect power
  • Arm pack-level fire suppression (if fitted)

BSM3 provides the alarm. Your BMS determines the response.

WORK WITH TIPS

From your setup to on-site evaluation.

  1. Share your setup

    Tell us about your pack, the challenge you face and where you need early warning.

  2. Review the fit

    Pack enclosure, operating temperature, mounting position, and BMS input.

  3. Evaluate on site

    Evaluate detection and the BMS response in your pack design.

Working on a battery pack or ESS?

Tell us about your pack and where you need early warning.