Victron Energy SmartShunt IP21 Battery Monitor, Bluetooth, VE.Direct, 6.5-70VDC

Overview

The Victron Energy SmartShunt IP21 Battery Monitor is a Bluetooth battery monitor that tracks battery state of charge, current, voltage, consumed amp hours, time remaining, and stored history without adding a separate display at the helm or panel. It works from 6.5 to 70 VDC, covers battery capacity settings from 1 to 9999 Ah, and is offered with 300A, 500A, 1000A, and 2000A shunt ratings for different DC system sizes.

On board, this is useful when the battery bank is tucked away in a dry locker, under a berth, or near the DC distribution area and the crew wants clear battery data on a phone or tablet through VictronConnect. The IP21 enclosure belongs in a protected dry location, not a wet bilge, cockpit locker that floods, or any area exposed to washdown spray.

A VE.Direct port lets the SmartShunt feed data to a Victron GX device when a wired path to a larger monitoring system is needed. The auxiliary connection can be configured for second battery voltage, midpoint monitoring, or temperature measurement when the optional temperature sensor is installed.

Key features

• Bluetooth monitoring through VictronConnect, so battery data can be read on a phone or tablet without a separate display head.
• 6.5 to 70 VDC operating range suits common 12V, 24V, and 48V DC battery systems when the installation is wired within the shunt rating.
• Tracks state of charge, voltage, current, consumed amp hours, time to go, and history for day-to-day battery management on board.
• VE.Direct port can connect the monitor to a Victron GX device for system-level monitoring.
• Auxiliary input supports second battery voltage, battery bank midpoint, or temperature monitoring with the optional sensor.
• IP21 protection category requires a dry mounting location, which matters in marine spaces exposed to salt mist, washdown water, or bilge moisture.
• Current measurement accuracy is ±0.4 percent, with voltage measurement accuracy of ±0.3 percent.
• Stores 46 days of trend data for battery voltage, current, state of charge, and the configured auxiliary input.

Variants

This product range is offered in four current ratings. The correct rating depends on the maximum current expected through the main negative battery path, including charging sources, inverter loads, and DC distribution.

Across these IP21 variants, the monitoring functions, supply voltage range, Bluetooth connection, VE.Direct port, IP21 protection category, and auxiliary input remain the same. The current rating, body size, and shunt connection bolt size change by model.

• SHU050130050: Current Rating 300A. This version has a 44 x 120 x 44 mm body with M8 shunt connection bolts, which keeps the footprint small for lower-current DC banks.
• SHU050150050: Current Rating 500A. This version has a 46 x 120 x 54 mm body with M10 shunt connection bolts for installations with higher current cabling.
• SHU050210050: Current Rating 1000A. This version has a 68 x 168 x 75 mm body with M10 shunt connection bolts for larger DC systems and inverter-heavy battery banks.
• SHU050220050: Current Rating 2000A. This version has a 68 x 168 x 100 mm body with M10 shunt connection bolts for very high-current battery installations.

Installation and setup

Mount the SmartShunt on a hard surface in a dry area close to the battery bank, with all loads and charging sources routed through the load side of the shunt. Keeping it close to the battery helps reduce cable length and keeps the measurement point consistent with the main negative battery path.

In saltwater installations, protect the unit from drips, condensation, and spray, and plan the location with Bluetooth range in mind. Metal structures and seawater around the hull can reduce Bluetooth range, so a VE.Direct connection to a GX device or a separate VE.Direct Bluetooth dongle may be useful in difficult mounting locations.

Compatibility and system integration

The monitor works with a wide range of battery chemistries configured in VictronConnect, including Lithium, AGM, and Flooded batteries. It is a strong match for cruising boats, fishing boats, and sailboats that already use Victron charging or monitoring equipment, or for standalone DC systems where amp-hour tracking is needed.

For a full Victron system, the VE.Direct port lets the shunt report data to a GX device and onward to remote monitoring when that system is installed. For simpler boats, Bluetooth app monitoring may be the only display path needed.

Temperature monitoring requires the optional BMV temperature sensor. When that sensor is not installed, the auxiliary input can still be used for second battery voltage or midpoint monitoring, depending on the setup.

What's included

• SmartShunt IP21 battery monitor
• Two 1.5 m red cables with 1 A fuse for positive connection and starter battery or midpoint connection

Maintenance and care

Check the shunt terminals periodically as part of routine DC system inspection, especially on boats with vibration or battery compartments that see salt air. Keep the housing dry and clean, and inspect the fused positive lead during battery service.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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