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VICTRON ENERGY BAM010700100, is a battery monitor (fuel gauge) for battery, remaining time and much more. The BMV-700HS is used for systems with only grounded negative (the battery monitor is not isolated from the shunt). The remaining capacity of the battery depends on the number of amp-hours consumed, discharge current, temperature, and the age of the battery. Complex program algorithms are needed to take all these variables into account. In addition to the basic display options such as voltage, current, and consumed amp-hours, the BMV-700 series also shows state of charge, remaining time, and power consumption in watts.
The BMV-702 has an extra input that can be programmed to measure voltage (in a second battery), temperature, or mid-point voltage. To measure the current to and from the battery, a shunt is installed between the battery's negative terminal and the loads or chargers. The battery monitor can be equipped with a Bluetooth dongle (the BMV-712 has built-in Bluetooth), allowing you to check the battery status via a smartphone, tablet, or laptop. All charger settings can be made with the VictronConnect app.
Please note that you need a short negative cable between the outgoing negative terminal on the battery bank and the inside of the shunt. If you need to supplement with such a cable, they can be found under this link: Tinned cable pre-crimped
Easy to install
All electrical connections go to a quick-connect PCB on the current shunt. The shunt is connected to the display with a standard RJ12 telephone cable. Included: RJ12 cable (10 m) and battery cable with fuse (2 m), no other components are needed. Also included is a separate front bezel for a square or round display; a fastening ring for rear mounting and screws for front mounting.
Very low power consumption from the battery
Power consumption: 0.7 Ah per month (1 mA) @12 V and 0.6 Ah per month (0.8 mA) @ 24 V. Lithium-ion batteries, in particular, lose almost all capacity when discharged to shutdown due to low voltage. After shutdown due to low voltage, a lithium-ion battery has a capacity reserve of approximately 1 Ah per 100 Ah of battery capacity remaining. The battery will be damaged if the remaining capacity reserve is drawn from the battery. A residual current of, for example, 10 mA can damage a 200 Ah battery if the system is left in a discharged state for longer than 8 days.
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