Is there a purpose to having both the Renogy 500A Battery Monitor and the Bluetooth Module?
 
The Battery Monitor is a good idea for anyone without a smartphone or who doesn’t mind staying close to their system to keep tabs. This monitor can also work with all sorts of other battery applications, such as golf carts, electric scooters, medical devices, etc. The Bluetooth Module caters to anyone with a smartphone or tablet and those who want a bit more freedom in keeping tabs on their system. Renogy LifePO4 Battery has an RJ45 communication port connected with BT-2 and monitors the battery data directly from the APP. Lead-acid battery has no communication port, and the Bluetooth module detects battery data from the charge controller.
Can I monitor more than two batteries with one Renogy Battery Monitor?
 
Yes. Please follow the instruction carefully when you connect the system.
How to wire and calibrate the battery monitor?
 
Please find more information from the video at https://www.youtube.com/watch?v=-vrQsKZ7CdE&feature=youtu.be.
Why is he battery soc displayed by the battery monitor inaccurate?
First use or replacement of the battery. And zero or full capacity operation is required; Refer to the following video for operation steps at https://www.youtube.com/watch?v=-vrQsKZ7CdE&feature=youtu.be; Ensure RBM500 wiring is correct and make sure that all current flowing through the battery passes through the sampler.
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