# Battery Temp Sensor 4015889

**URL:** <https://community.electricforum.com/t/battery-temp-sensor-4015889/30469>\
**Category:** GEM Forum\
**Created:** [June 4, 2026, 6:16am UTC](https://community.electricforum.com/t/battery-temp-sensor-4015889/30469 "2026-06-04T06:16:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ca123ta](https://avatars.discourse-cdn.com/v4/letter/c/e9a140/32.png) [@ca123ta](https://community.electricforum.com/u/ca123ta)\
**Post date:** [June 4, 2026, 6:16am UTC](https://community.electricforum.com/t/battery-temp-sensor-4015889/30469/1 "2026-06-04T06:16:13Z")

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Hello all. On my 2020 Gem e4, my battery sensor is showing an OPEN for the “BMC Temp Sensor” (vs the Charger Temp Sensor") pair of leads on my battery temp sensor. Where/how can I order this Battery Temperature Sensor part#: 4015889? Does anyone have a spare they would like to sell?

Paul

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**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\
**Post date:** [June 4, 2026, 1:26pm UTC](https://community.electricforum.com/t/battery-temp-sensor-4015889/30469/2 "2026-06-04T13:26:25Z")

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Or you could try looking in a mirror and repeating “legoman” three times.