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The wiring diagram shows to hook the power directly to the battery using the temperature on the BMV 71. I want to wire it directly to my Lynx Distributor so it can be cut off and there won't be a parasitic drain if I don't use my van for weeks. Is that ok? The distributor will be in close proximity to the batteries, so the temperature should be close.
In principle, you could mount the temperature sensor in the Lynx Distributor but then you will not be measuring the actual battery Voltage. Instead you will have inaccuracies because you will be measuring the Voltage drop over the cables when high currents are flowing.
Secondly you would not be measuring the actual battery temperature - obviously.
The purpose of the device is to monitor the battery, if it is disconnected then it's no longer doing its job anymore.
The energy consumption of the BMV-712 is less than 1mA if the back-light is off which is probably less than the self discharge of the battery its self.
Another reason to NOT disconnect the BMV is it will reset the state of charge reading requiring a full battery recharge before it will provide SOC numbers. You can set the BMV to reset to 100% but that's generally incorrect.
1 mA of draw on a 100 AH battery will drop the battery 10% SOC in 10,000 hours or 13.8 months.
Just leave it connected.
