Question 1

Is there a purpose to having both this and the Bluetooth module?

Accepted Answer

I have the bluetooth from the solar controller. I also have this renogy battery monitor.  because the battery monitor is so much more accurate the bluetooth module ( really only serves as a good approximate 'indicator')  it does show the voltage and amp input from the solar panels and you get to view this on yr phone which is i guess 'interesting'. But really unless the information is completely accurate it is difficult to actually say it is worth worrying about really.

Question 2

Can this monitor a 1200ah system?

Accepted Answer

Yes you can enter your amp hr. Upto 9999

Question 3

Rv has 2x12v bats in parll. bat1+ feeds 12v bus; bat2- feeds gnd. invrtr + slr chrgr attch to these posts. hw to wire gge for both bus & invrtr cts?

Accepted Answer

This Renogy Battery monitor is coming with its shunt that most be connected to the negative cable of your two batteries in parallel. No matter how many different loads you are connecting to the positive your Batteries monitor shunt should connect to the negative cable. So, you disconnect the negative cable from the battery and inserts in series the shunt, then the portion negative cable to ground will be be connected from the second post point of the shunt( - load). Try to follow the wiring diagram provided.

Question 4

Why is this 80? Seems like there are other ones for half the price. Any advantage of having this one?

Accepted Answer

It seems you haven't took in all the facts. It includes an excellent shunt, well designed, fully thought out. While 80 might seen high to you, some cost much more. I paid 94 and am very happy. A word of advice. What you read on this device will not match any display on your controller. This will seem confusing. It is tracking your batteries, where your controller is tracking a mix of solar in, loads out, battery in, and battery out. Take the time to understand the nuances, and trust this tool. It is excellent.

ASIN	B07RP5B5P7
Best Sellers Rank	#5,788 in Automotive ( See Top 100 in Automotive ) #8 in Battery Testers
Brand Name	Renogy
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (2,585)
Global Trade Identification Number	00810009712206
Included Components	1LCD Interface, 1500A Shunt/Sampler, 1Shielded Wire, 1B+ Wire,1*Shunt Holder
Item Dimensions	3.9 x 2.4 x 0.7 inches
Item Type Name	Compatible with 12V Lithium Sealed, Gel, Flooded Batteries
Item Weight	75 Grams
Lower Temperature Rating	14 Degrees Fahrenheit
Manufacturer	Renogy
Maximum Operating Voltage	120 Volts
Measurement Type	Ammeter, Voltmeter
Minimum Operating Voltage	10 Volts
Model	RBM500-G1
Part Number	RBM500-G1
Power Source	Battery Powered
Specification Met	RoHS
Style Name	Voltage Tester
UPC	810009712206
Unit Count	1.0 Count
Upper Temperature Rating	140 Degrees Fahrenheit
Warranty Description	1-year material and workmanship warranty

Renogy 500A Battery Monitor with Shunt, High and Low Voltage Programmable Alarm, Range 10V-120V up to 500A, 20ft Shielded Cable, Compatible 12V Lithium Sealed, Gel, Flooded Batteries,Black

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