Victron Energy SmartShunt IP21 300 A / 50 mV
victronenergy.com/battery-monitors/smart-battery-shunt
The Victron Energy SmartShunt IP21 300 A / 50 mV is a battery monitor with dimensions of 44 x 120 x 44 mm and an ingress rating of IP21 on this model.
Last updated: 21 September 2026
What this device draws
- Standing measurement offset
- Less than 10 mA on the 300A
- How accurately it reads current
- Current measured to ±0.4%
- How accurately it reads voltage
- Voltage measured to ±0.3%
“Offset Less than 10 / 10 / 20 / 40 mA Accuracy of voltage measurement ± 0.3%”
Source: victronenergy.com/upload/documents/SmartShunt/9172-Manual_BMV_and_SmartShunt-pdf-en.pdf
“Accuracy of current measurement ± 0.4 % Offset Less than 10 / 10 / 20 / 40 mA Accuracy of voltage measurement ± 0.3 %”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“Accuracy of current measurement ± 0.4 % Offset Less than 10 / 10 / 20 / 40 mA Accuracy of voltage measurement ± 0.3 %”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Battery care and safety
- Operating temperature range
- -40 °C to +50 °C
- Ingress protection
- IP21 on this model
- Temperatures it works in
- Works from −40 °C to +50 °C
- Temperatures it can measure
- Measures temperature from −20 °C to +50 °C
“Operating temperature range -40 +50°C (-40 - 120°F)”
Source: victronenergy.com/upload/documents/SmartShunt/9172-Manual_BMV_and_SmartShunt-pdf-en.pdf
“Protection category IP21 STANDARDS Safety EN 60335-1”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“Operating temperature range -40 +50°C (-40 - 120°F)”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“Temperature measurement range -20 +50°C”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Size and fit
- Overall dimensions
- 44 x 120 x 44 mm
- Bolts on the shunt
- M8 bolts
“300 A: 44 x 120 x 44 mm 500 A: 46 x 120 x 54 mm 1000 A: 68 x 168 x 75 mm 2000 A: 68 x 168 x 100 mm”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“300 A: M8 500 A, 1000 A, 2000 A: M10 (0.3937 inch)”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Compatibility
- Bank sizes it can be set to
- Any bank from 1 Ah to 9,999 Ah
“Battery capacity (Ah) 1 - 9999 Ah”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Buying and owning it
- Days of history it keeps
Forty-six days of stored trends
Datasheet-SmartShunt-EN.pdf · retrieved 15 September 2026
“Number of days trends data is stored 46”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Thirty days of stored history
SmartShunt | Victron Energy · retrieved 16 September 2026
“See all important battery and DC flow data instantly in the VictronConnect app-no Bluetooth pairing delays. Access live performance and load metrics, plus 30-day battery history whenever you need it.”
Source: victronenergy.com/battery-monitors/smart-battery-shunt
- VE.Direct port
- Yes, a VE.Direct port
- Cables in the box
- Two fused cables in the box
- Temperature sensor
- The temperature sensor is an extra
The maker’s own documents give different figures
“VE.Direct communication port Yes”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“Cables (included) Two cables with 1 A fuse, for ‘+’ connection and starter battery or midpoint connection”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“Temperature sensor Optional (ASS000100000)”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Other findings
- CE mark date
- CE mark from 4 March 2014
- Declared EU directives
- EMC, RED, Low Voltage and RoHS
- Mounting condition
- A dry location — it is not waterproof
- Named on declaration of conformity
- Named on the 2024 declaration, as 300A/50mV
- Protection category
- IP21 — not waterproof
“Vehicle Radiated Emissions & Immunity ECE R10-6 CE MARK DATE: March 4th, 2014”
Source: victronenergy.com/upload/documents/Battery-Monitor-BMV-&-SmartShunt-2024-08-27.pdf
“EMC Directive 2014/30/EU with the following harmonized standards: EN-IEC 61000-6-1:2007 EN-IEC 61000-6-2:2005/AC:2005 EN-IEC 61000-6-3:2007/A1:2011/AC:2012 EN 50498:2010 ISO 7637-2:2016”
Source: victronenergy.com/upload/documents/Battery-Monitor-BMV-&-SmartShunt-2024-08-27.pdf
“rated IP21, it is not waterproof and has to be mounted in a dry location. The SmartShunt has two 5.5 mm holes for mounting purposes located in the bas”
Source: victronenergy.com/upload/documents/SmartShunt/9172-Manual_BMV_and_SmartShunt-pdf-en.pdf
“SmartShunt 300A/50mV Battery Monitor BMV-710H Smart SmartShunt 500A/50mV Temperature Sensor for BMV and SmartShunt SmartShunt 1000A/50mV”
Source: victronenergy.com/upload/documents/Battery-Monitor-BMV-&-SmartShunt-2024-08-27.pdf
“Protection category IP21 STANDARDS Safety EN 60335-1 Emission / Immunity EN-IEC 61000-6-1 / EN-IEC 61000-6-2 / EN-IEC 61000-6-3 Automotive EN 50498”
Source: victronenergy.com/upload/documents/SmartShunt/9172-Manual_BMV_and_SmartShunt-pdf-en.pdf
Certification claims
- The safety standard on its datasheet
- EN 60335-1 claimed on the datasheet
- Automotive standard claimed
- EN 50498, listed under Automotive on the datasheet
- What the safety certificate covers
- Victron's IEC 61010 certificate is for the IP65 models, not these
- Automotive approval
- No ECE approval Victron publish names the 300 A
“STANDARDS Safety EN 60335-1”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“EN-IEC 61000-6-3 Automotive EN 50498”
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
“DC currents pass: SmartShunt 300A IP65: 300Ad.c. SmartShunt 500A IP65: 500Ad.c. SmartShunt 1000A IP65: 1000Ad.c. SmartShunt 2000A IP65: 2000Ad.c.”
Source: victronenergy.com/upload/documents/Certificate-Safety-IEC-61010-SmartShunt-IP65.pdf
“Means of identification of type, if marked on the vehicle/component/ separate technical unit (1) : - SmartShunt 500A/50mV - SmartShunt 1000A/50mV - SmartShunt 2000A/50mV”
Source: victronenergy.com/upload/documents/Certificate-Automotive-ECE-R10-6-SmartShunt.pdf
Source for these specifications
Victron Energy B.V.
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Retrieved September 15, 2026
Sources
- Archived document
Source: victronenergy.com/upload/documents/Certificate-Automotive-ECE-R10-6-SmartShunt.pdf
Retrieved September 16, 2026
- Archived document
Source: victronenergy.com/upload/documents/Datasheet-SmartShunt-EN.pdf
Retrieved September 15, 2026
- Archived document
Source: victronenergy.com/upload/documents/Battery-Monitor-BMV-&-SmartShunt-2024-08-27.pdf
Retrieved September 15, 2026
- Archived document
Source: victronenergy.com/upload/documents/SmartShunt/9172-Manual_BMV_and_SmartShunt-pdf-en.pdf
Retrieved September 15, 2026
- Archived document
Source: victronenergy.com/upload/documents/Certificate-Safety-IEC-61010-SmartShunt-IP65.pdf
Retrieved September 16, 2026
- SmartShunt | Victron EnergyArchived document
Source: victronenergy.com/battery-monitors/smart-battery-shunt
Retrieved September 16, 2026