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Ram 1500

Battery parameters

The Ram 1500 has 4 battery parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Battery temperature 1500_BAT_T

  • Request21 23
  • Service 21PID 23
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 48 to 63 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2009 to 2012, 2014 to 2016, 2018, 2020, 2022 to 2024. Not supported for 2013, 2017, 2019, 2021.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Battery temperature 1500_BAT_T

  • Request21 23
  • Service 21PID 23
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 48 to 63 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2009 to 2012, 2014 to 2016, 2018, 2020, 2022 to 2024. Not supported for 2013, 2017, 2019, 2021.

Battery voltage 1500_BATT_V_ECU

  • Request22 19 55
  • Service 22DID 1955
  • ModuleDA10 → 10
  • Every30 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 2000)
Range
0 to 20 V
Unit
V

In testing for 2026. Not supported for 2025.

Battery voltage, BCM 1500_BATT_V_BCMConfirmed

  • Request22 10 04
  • Service 22DID 1004
  • ModuleDA40 → 40
  • Every30 s
  • Testing for 2026

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 10)
Range
0 to 25 V
Unit
V

Confirmed for 2025. In testing for 2026.

Control module voltage VPWRSAE J1979Confirmed

Power input to the OBD control module. VPWR is normally battery voltage, less any voltage drop in the circuit between the battery and the control module.

Pelican can show this parameter as the starter battery voltage.

  • Request01 42
  • Service 01PID 42
  • Module7E0 → 7E8
  • Every10 s

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 1000)
Range
0 to 65535 V
Unit
V

Confirmed for 2012 to 2013, 2016, 2018 to 2026. Supported for 2014 to 2015, 2017.

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