Simpson Iain

I have just installed a Rewire Security DB2 on my NX300h. Installation and loading the app on my phone were both was very straight forward. The initial current draw was 30ma. It dropped to less than 10ma once it had found a GPS satellite and went into sleep mode. It has its own internal battery that allows it to function if it is disconnected from the car 12v battery.

After monitoring the resting battery voltage for two weeks I changed the battery this morning. It was a fairly straight forward job. No error codes or messages after the change. The old battery was a Panasonic the new battery is a Yuasa YBX5027 sealed battery from the local GSF car parts depot.

I have recently acquired a Lexus 2019 NX300h, and after reading posts on this forum on issues with the 12v battery, have started monitoring battery voltage with a digital multimeter. I have noticed that the voltage reduces the longer I do not drive the car. The lowest I have measured is 12.1v after not using the car for two days. Is there a critical voltage below which the car will not go into ready mode? I have just ordered some electrical components to allow me to easily connect an existing trickle charger to the battery. I have also ordered a voltmeter that can plug into the OBD2 socket to monitor battery voltage.