Description
xVictron Energy Battery Monitor BMV-702
The Victron BMV-702 is a precision battery monitor designed for 12V, 24V and 48V battery systems. It gives installers and system operators accurate, real-time data on state of charge, voltage, current and consumed amp-hours. It suits off-grid solar systems, marine installations, motorhomes and any application where reliable battery monitoring is essential.
Key Features
- Displays state of charge (SOC) as a percentage, updated continuously based on measured current flow.
- Monitors voltage, current, power consumption and consumed amp-hours on the main battery bank.
- Second battery voltage input allows simultaneous monitoring of a starter or auxiliary battery.
- Programmable relay output can trigger alarms or control external devices based on configurable thresholds.
- Backlit display with intuitive rotary dial navigation for straightforward on-site reading and configuration.
- Connects to Victron VE.Direct interface for integration with GX devices, CCGX and the VictronConnect app via a compatible dongle.
- Configurable battery capacity, Peukert exponent, charge efficiency factor and discharge floor to suit different battery chemistries.
Product Overview
The BMV-702 measures current using a precision shunt (sold separately or as part of a kit) and calculates state of charge by integrating current over time. This method is far more accurate than voltage-based estimation, particularly for lithium and AGM batteries where the voltage curve is relatively flat. Knowing the true SOC prevents over-discharge, which is one of the most common causes of premature battery failure in off-grid and mobile systems.
The second voltage input is a practical addition for dual-battery setups common in marine and vehicle applications. It allows the installer to keep an eye on a starter battery without needing a separate monitor. The programmable relay adds a layer of automation: it can be configured to disconnect loads, trigger an alarm buzzer or start a generator when the battery reaches a defined threshold.
VE.Direct connectivity means the BMV-702 integrates cleanly into larger Victron systems. When paired with a GX device such as the Cerbo GX, data from the BMV-702 appears on the system overview and is logged to the VRM portal for remote monitoring. A VE.Direct to USB or Bluetooth dongle is required for use with VictronConnect on a smartphone or laptop.
Specifications
- SKU: BAM010702000
- GTIN: 8719076020097
- Weight: 0.627 kg
- Compatible battery voltages: 12V, 24V, 48V
- Second battery input: Yes (voltage monitoring only)
- Relay output: Yes, programmable
- Communication: VE.Direct
Applications
- Off-grid solar systems requiring accurate battery state of charge monitoring.
- Marine installations with dual-battery setups (house bank and starter battery).
- Motorhomes, campervans and leisure vehicles with 12V or 24V battery systems.
- Telecom and industrial backup power systems where battery health tracking is critical.
- Any Victron system integrated with a GX device and VRM remote monitoring portal.
What Is Included
- BMV-702 battery monitor head unit with display
- 500A/50mV shunt
- VE.Direct cable
- Temperature sensor
- Mounting hardware and connection cables
Installation Notes
The BMV-702 shunt must be installed on the negative battery terminal, with all negative loads and charge sources connected to the load side of the shunt. Incorrect wiring will result in inaccurate readings. For systems integrated into a larger solar or off-grid installation, installation by a qualified electrician is recommended. The unit is compatible with 12V, 24V and 48V battery banks. Ensure the correct battery capacity and chemistry parameters are configured after installation to achieve accurate state of charge calculations.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.