# Connecting the Smartshunt to both starter and auxiliary battery **URL:** \ **Category:** DIY\ **Tags:** smartshunt, battery\_charging\ **Created:** [3 December 2025 10:38 UTC](https://community.victronenergy.com/t/connecting-the-smartshunt-to-both-starter-and-auxiliary-battery/49699 "2025-12-03T10:38:15Z")\ **Posts on this page:** 1\ **Showing post:** 8
**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:** [3 December 2025 19:49 UTC](https://community.victronenergy.com/t/connecting-the-smartshunt-to-both-starter-and-auxiliary-battery/49699/8 "2025-12-03T19:49:37Z")
This FAQ answers how to connect the SmartShunt. > [@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): > > 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… --- _[View the full topic](https://community.victronenergy.com/t/connecting-the-smartshunt-to-both-starter-and-auxiliary-battery/49699)._