The Merlin SmartGauge Battery Monitor is the most accurate battery monitor currently available today.
Conventional battery monitors use a Current Measurement Shunt to ‘count’ amp-hours in/out of a battery. The problem is that an amp hour changes according to temperature, discharge rate, charge rate, and condition of the batteries. This means that conventional monitors run out of synchronisation and after a time can display misleading information.
The Merlin SmartGauge uses a completely different type of monitoring method. Real-Time battery measurements and proprietary algorithms coupled to computerised battery models allow SmartGauge to always provide real-time battery % of charge remaining AND will never run out of synchronisation with the battery. What’s more, installation is easier and SmartGauge can be easily used and understood by all crew members.
In recent independent tests by leading battery manufacturer, Enersys, The Merlin SmartGauge was found to be more accurate than conventional battery monitors.
The Merlin SmartGauge displays the battery voltage for your domestic battery bank and % remaining. Conventional monitors always show % remaining of theoretical capacity when the battery is new – not actual. Bearing in mind that batteries lose around 10% of capacity per year, this means that inherent inaccuracies grow. SmartGauge displays real-time capacity remaining so you are never surprised by running out of power early.
The Merlin SmartGauge will also display the battery voltage for your engine battery. It is fitted with a high/low voltage alarm for each battery and a low % remaining alarm. A volt-free contact on the rear of SmartGauge allows you to trigger external alarms, auto generator start, etc.
The Merlin SmartGauge’s large LED display is easily read in all lighting conditions and the unit is suitable for 12 and 24V battery banks. Installation comprises of connecting 3 wires and telling the unit which style of battery you have. Programs include: Semi Traction Open Lead/Acid, Leisure Lead/Acid, Sealed Lead/Acid (High Calcium), Gel, AGM, Lifeline, Odyssey, Optima, and custom programs.
Smartguage Specifications:
Voltage Range 8-40VDC (Suitable for 12 and 24V systems) Current (Sleep Mode) 5mA Current (Display On) <15mA Operating Temp -25 to + 85 degrees Celsius Accuracy Absolute maximum error of 10% during charge (Self-correcting) Voltage Accuracy +/-0.5% Dimensions – Front Panel 110x76mm Dimensions – Body 95x64mm Dimensions – Overall depth 28mm Weight 200g Protection Rating IP20 – Front Panel IP65 Standards Compliance CE, ISO7637-2
The Merlin Power SmartGauge is an advanced battery monitoring system that measures electricity without the need for a traditional shunt. Instead, it uses a unique method to monitor battery status. Here's how the Merlin Power SmartGauge works:
Voltage-Based Measurement: The SmartGauge primarily uses voltage readings to assess the state of charge (SoC) of the battery. This is different from traditional methods that measure current flowing in and out of the battery using a shunt.
Complex Algorithms: It employs sophisticated algorithms to interpret the voltage data. These algorithms take into account the battery's characteristics, such as its age, type, and usage patterns, to accurately determine the SoC.
Temperature Compensation: The SmartGauge also considers the temperature, as battery voltage can vary with temperature changes. This ensures more accurate readings under different environmental conditions.
History and Usage Patterns: The device learns from the battery's history and usage patterns. Over time, it becomes more accurate in predicting the battery's state by understanding how it behaves under various loads and charge conditions.
Direct Connection: The SmartGauge is directly connected to the battery terminals. This direct connection allows for continuous monitoring of the voltage without the need for a shunt to measure current flow.
User Calibration: Users can calibrate the SmartGauge according to their specific battery type and usage, which enhances the accuracy of the readings.
Display and Interface: The device provides a user-friendly interface that displays key information like the state of charge, voltage, and estimated remaining capacity.
By avoiding the use of a shunt, the Merlin Power SmartGauge offers a simpler installation and reduces potential points of failure in the system. However, it's important to note that while voltage-based measurements can be very accurate, they may not always provide the same level of detail as systems that measure both voltage and current.
All orders are processed within 1-2 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.
Expedited delivery can be selected at the checkout, if your order is placed before 1pm we will pick, pack & despatch the same day and send it to you on a courier 24hr service.
Domestic Shipping Rates
We offer flat rate shipping to the UK
Small Parcel Standard Delivery
2 to 3 business days
£4.95
Small Parcel Express Delivery
1 business day
£6.95
Large Parcel Express Delivery
1business day
£19.95
In-store pickup
You can skip the shipping fees with free local pickup. After placing your order and selecting local pickup at checkout, your order will be prepared and ready for pick up within 1 business day1. We will send you an email when your order is ready along with instructions.
Please have your order confirmation email with you when you come.
International Shipping
We currently do not offer international shipping.
How do I check the status of my order?
When your order has shipped, you will receive an email notification from us which will include a tracking number you can use to check its status. Please allow 24 hours for the tracking information to become available.
If you haven’t received your order within 1 days of receiving your shipping confirmation email, please contact us at sales@vanjunkies.co.uk with your name and order number, and we will look into it for you.
Refunds, returns, and exchanges
We accept returns up to 14 days after delivery, if the item is unused and in its original condition, and we will refund the full order amount minus the shipping costs for the return.
In the event that your order arrives damaged in any way, please email us as soon as possible at sales@vanjunkies.co.uk with your order number and a photo of the item’s condition. We address these on a case-by-case basis but will try our best to work towards a satisfactory solution.
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About Van Junkies
Van Junkies started with a passion for conversion, initially with a Volkswagen Crafter and then a Mercedes Sprinter. Faced with the challenge of sourcing parts, we created Van Junkies to provide affordable solutions. Now based in Gosport, our warehouse caters to the growing demand for our products. Committed to customer satisfaction, we're here to assist you every step of the way. From off-grid solar design to complete conversion kits, we strive to be your ultimate destination for eco-friendly transformations. Specializing in Victron products, we ensure seamless integration and offer free support. Let's make your campervan, motorhome, or yacht a self-sufficient haven together.
