# Battery Isolator low voltage output

**URL:** <https://community.ecumaster.com/t/battery-isolator-low-voltage-output/5243>\
**Category:** OTHER DEVICES\
**Created:** [February 16, 2026, 5:52pm UTC](https://community.ecumaster.com/t/battery-isolator-low-voltage-output/5243 "2026-02-16T17:52:08Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![iain](https://avatars.discourse-cdn.com/v4/letter/i/d2c977/32.png) [@iain](https://community.ecumaster.com/u/iain)\
**Post date:** [February 16, 2026, 5:52pm UTC](https://community.ecumaster.com/t/battery-isolator-low-voltage-output/5243/1 "2026-02-16T17:52:09Z")

</div>

![20260216 - 4_2v output](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/d/d62a5f945d9f1033cedb281bcb99d0de6df0176e.png)

Has anyone come across this issue with the Battery Isolator where when coming out of power save mode the main output terminal only gives 4.3v? The 4.3v has been verified with a multimeter too.

Regards, Iain