Are there any voltage restrictions? I want to use this in a 36v golf cart.

Yes. The shunt voltage range is 6.5 to 70V. The required battery charge voltage is set during setup. For example set the charge voltage to 39.6V for 36V lead acid battery Note different voltages for lithium! The manual is available for download from the website.

battery negative cable is two short to connect terminal lug, can I use nut bolt to extend it ? or is there another device I can use to extend negative

I am not sure what you are asking. There are three cables that come out of the SmartShunt; one is the Auxiliary, one is the Battery Positive, and one is the VE.Direct. The positive wire and the auxiliary wire can each be extended if you properly crimp another wire in place.

So even with "load -" and "battery -" terminals in the open, this is still ip65? it's ok if they are exposed? can i mount on trailer tongue?

IP65 means you won't get water and dust inside the unit. It doesn't mean the exposed terminals can't be wrecked in extreme conditions.

I use two 12v batteries wired in parallel for extended battery life. Will this monitor both batteries or "see" them as one?

The SmartShunt only has the capability to monitor one battery bank. It cannot tell how many batteries are connected to it.

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⚡ Stay powered, stay smart — the ultimate battery brain for the connected pro.

RUGGED IP 65 PROTECTION - Built to withstand dust and water, perfect for any environment or retrofit installation.
SMART SYSTEM INTEGRATION - Wirelessly sync data with other Victron devices for optimized charging and remote management.
VERSATILE AUXILIARY PORT - Expand functionality with a second battery monitor, midpoint monitoring, or temperature sensor connection.
SEAMLESS BLUETOOTH CONNECTIVITY - Monitor your battery’s health live on your smartphone with VictronConnect app—no delays, no hassle.
ULTRA ACCURATE BATTERY INSIGHTS - Track voltage, current, state of charge, and charge cycles with precision shunt technology.

The Victron EnergySmart Battery Shunt IP65 is a Bluetooth-enabled, waterproof battery monitor designed for professional-grade battery management. Supporting 6.5V-70V systems and up to 500 amps, it delivers precise real-time data via the VictronConnect app, enabling optimized charging and remote monitoring. Its rugged IP65 rating and versatile auxiliary connections make it ideal for seamless integration into any power system, ensuring you never miss a beat on your battery’s health.

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