# Victron BMV 712 Not Showing Engine Charge

**URL:** <https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230>\
**Category:** DIY\
**Tags:** bmv, victron\_community, marine\
**Created:** [24 August 2025 06:43 UTC](https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230 "2025-08-24T06:43:39Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![BBPeckham](https://avatars.discourse-cdn.com/v4/letter/b/f6c823/32.png) [@BBPeckham](https://community.victronenergy.com/u/BBPeckham)\
**Post date:** [24 August 2025 06:43 UTC](https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230/1 "2025-08-24T06:43:39Z")

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Hi all, new to this product, all seems fine apart from one thing- I can see the voltage rising (boat engine) but can’t see it represented in a plus value for amps/watts. Seems OK for the solar as can see that represented here, just not the engine. Apologies if this is something obvious and many thanks for any help! Cheers, Brian

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**Author:** ![ejrossouw](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/ejrossouw/32/1610_2.png) [@ejrossouw](https://community.victronenergy.com/u/ejrossouw)\
**Post date:** [24 August 2025 07:22 UTC](https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230/2 "2025-08-24T07:22:01Z")

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@BBPeckham Ensure the alternator is upstream of the shunt an not bypassing it directly to the battery. The online manuals and diagrams could best demonstrate how to ensure this.

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**Author:** ![pwfarnell](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pwfarnell/32/2341_2.png) [@pwfarnell](https://community.victronenergy.com/u/pwfarnell)\
**Post date:** [24 August 2025 09:08 UTC](https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230/3 "2025-08-24T09:08:59Z")

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The normal issue on boats is you have left the hull / engine ground connected to the battery negative, you need to move this to the system side of the shunt. This cable caries the alternator charge current so must pass through the shunt.

See link below.

> [@Shunt / battery monitor not reading the correct SOC/ Amps, missing solar, decreasing daily or other misreading problems](https://community.victronenergy.com/t/shunt-battery-monitor-not-reading-the-correct-soc-amps-missing-solar-decreasing-daily-or-other-misreading-problems/87):
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> This topic covers the SOC / Amps reported by BMV battery monitors, SmartShunts, Lynx BMSs and Lynx Shunts and will just be called shunt below. It is also assumed that the shunt is monitoring the domestic / house / cabin battery bank and not engine start / bow thruster / winch / caravan mover battery banks. The problems may be one or more of the following The SOC decreases daily despite the solar charger or other charger(s) working. The SOC increasing when discharging and falling when charging…

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**Author:** ![BBPeckham](https://avatars.discourse-cdn.com/v4/letter/b/f6c823/32.png) [@BBPeckham](https://community.victronenergy.com/u/BBPeckham)\
**Post date:** [24 August 2025 12:55 UTC](https://community.victronenergy.com/t/victron-bmv-712-not-showing-engine-charge/44230/4 "2025-08-24T12:55:05Z")

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Cheers all, sounds logical, will take a look!

Brian