Victron EnergySmart Battery Sense, Voltage and Temperature Sensor, Long Range (up to 10m)

I hooked this product up as soon as I built my battery bank, it is very simple to setup, and use. For the cost it is a wonderful value giving the ability to keep you victron system updated with battery temperature, as well as voltage protection. I've used this along side a Victron Smart Shunt so I can keep the Shunt second input reserved for Midpoint Voltage Deviation on my 24v battery bank. Otherwise personally I would have got the Shunt temp sensor, but for the fact it allowed me to add an additional function, and read out to my system. Would definitely recommend to someone in a similar situation where they want to keep midpoint Deviation between 12v batteries as data logged in your system, or just to give easy Bluetooth readings to your phone.

Bought this because it's victron and they are the best and recommended by many DIY installers and professionals. I bought this item for it's intended use and I can say 100% that it works as intended and super easy to setup. Because it's bluetooth there can be some weird connectivity issues but I don't blame this device I blame bluetooth because of how finicky it can be on different devices.Anyway, the value for the money and the accuracy which I compare to a Craftsman multimeter from 25+ years ago and it's right on point with the volt measurements which are graphed in real time.The one thing I don't like is there seems to be either no ability to zoom into the the time window if the peaks and valleys are low and high. I couldn't find a way to narrow down when my battery went from no draw to draw. I could see the valley but I couldn't see the peak even if pinching my fingers on the screen like I would have expected to work. All good, still give this a 5 stars because it's just awesome and so is the price.

Update (11/18/23): The VE app keeps historical data for 180 days, and will also generate graphs (e.g. voltage and temperature) [pics added].Update (2/12/23): Current inventory of VE products: (2) 100V/50A, (2) 100V/30A, (1) 100V/20A, (1) SmartShunt IP67 (newer), (1) SmartShunt (older), (1) BatterySense. Best feature is the VE.Smart networking feature, which allows the components to work together to optimize charging of the battery bank.Summary: This review is for the Smart Battery Sense monitor, which is a bluetooth voltage and temperature monitoring device. This has voltage and temperature monitoring. Whereas the SmartShunt can measure current too, but lacks the temperature ( can be added with an extra sensor ).Current solar/PV system specs: 4kW of panels (most are 100W panels); 24-volt, 21kWh marine AGM battery bank; 3500W inverter; VE SmartSolar MPPT controllers: 20A (one), 30A (two), 50A (one); battery sense monitor (one).Observations: Currently have the battery monitor and two current shunts (one for battery, and one in energy monitor mode to see the current draw into the inverter). One of Victron's best features is the ability to network the controllers together, so that you don't over charge your batteries. I am running four (4) VE MPPT controllers, and 75% of the panels feed into those, but I have a few other test MPPT controllers as well, so having the capability for the VEs to stop charging (absorption and float) is very important to prevent over charging your batteries.Recommendation: If you're trying to determine if the Victron Energy family of components is worth the extra money, I would say yes, based on the ability to integrate different components (mppt, battery monitors [current, voltage]). If you have a simple system, and do not need bluetooth monitoring, there are other solar/PV controllers for less.Pros: VE iPhone/iPad app works well; VE networking.Cons: None for now.Conclusion: At $40, rating this 5-stars.Related Products:Victron SmartShunt 500A/50mV IP65 Waterproof Smart Battery Monitor ~ $160https://www.amazon.com/dp/B0BF636VBXVictron Energy SmartShunt 500 amp Battery Monitor (Bluetooth) ~ $1314.6 out of 5 stars 1,888 ratings | 163 answered questionshttps://www.amazon.com/dp/B0856PHNLXVictron Energy SmartSolar MPPT 100V 30 amp 12/24-Volt Solar Charge Controller (Bluetooth) ~ $2124.8 out of 5 stars 1,029 ratingshttps://www.amazon.com/dp/B073ZJ3L13Victron Energy SmartSolar MPPT 100V 20 amp 12-24-48 Volt Solar Charge Controller (Bluetooth) ~ $1604.8 out of 5 stars 1,668 ratings | 220 answered questionshttps://www.amazon.com/dp/B075NPQHQKVictron SmartSolar MPPT 100/50 Charge Controller ~ $3254.7 out of 5 stars 735 ratings | 140 answered questionshttps://www.amazon.com/dp/B073ZJ43L1

QUALITY, QUALITY, QUALITY. This company always builds the best products and even at 1-1/2"x1-1/2" as this littlething is it works fantastic.

Victron is cool, does what you need

Easy install. There is an adhesive back that is easy to miss unless you're reading the manual. That allows you to stick the Sense to the battery for accurate temp readings. This device installed quickly and gave me much needed visibility into the state of the battery.

I have a AGM Lead Acid battery and making sure you charge according to temperature is important for the life of the battery. I paired this with my Victron 75/15 charge controller and it works together flawlessly. All that was needed was to make a bluetooth group and put the battery sense and the charge controller in the same group and they communicate with each other.The bluetooth range of the battery sense is the longest of all the Victron stuff I own.

The packaging is a plain white box - perfect for throwing away !! The unit connects via Bluetooth easily and shows real-time data, the instructions are comprehensive and simple to understand (and in multiple languages). Build quality is good.