Renogy RMS-LFPS-US User manual

Version 1.2
FOR SMART LITHIUM BATTERY SERIES
MONITORING
SCREEN

Disclaimer
The manufacturer accepts no liability for any damage caused by:
This manual contains important installation and operation
instructions for the Renogy monitoring screen. Please review
and observe these instructions and keep them located near the
monitoring screen for further reference. The following symbols
are used throughout the manual to indicate potentially dangerous
conditions or important safety information.
Force majeure including fire, typhoon, flood, earthquake, war,
and terrorism.
Intentional or accidental misuse, abuse, neglect or improper
maintenance, and use under abnormal conditions.
Improper installation, improper operation, and malfunction of
a peripheral device.
Contamination with hazardous substances, diseases, vermin,
or radiation.
Alterations to the product without express written consent
from the manufacturer.
Important Safety Instructions
Please save these instructions.
Indicates a potentially dangerous condition. Use
extreme caution when performing this task.
Indicates a critical procedure for the safe and proper
installation and operation of the monitoring screen.
Indicates a procedure or function that is important
to the safe and proper installation and operation
of the monitoring screen.

General Safety Information
DO NOT touch the exposed electrolyte or powder if the
battery casing is damaged.
Uncovered electrolyte or powder that has contacted skin or
eyes MUST be flushed out with plenty of clean water
immediately. Seek medical attention afterwards.
Please make sure any battery charger or charge controller
has been disconnected before working on the battery.
DO NOT connect or disconnect terminals from the battery
without first disconnecting loads.
DO NOT wear jewelry or other metal objects when working
on or around the battery.
DO NOT place tools on top of the battery.
Please keep the battery out of the reach of young children.
Please wear proper protective equipment when working on
the battery.
Please use insulated tools when working on battery.
The monitoring screen is designed for indoor and compart-
ment installation. DO NOT expose it to direct sunlight, rain,
snow, moisture, or liquids of any type.
DO NOT puncture, drop, crush, burn, penetrate, shake, or
strike the monitoring screen.
DO NOT open, dismantle, or modify the monitoring screen.
The monitoring screen is only compatible with Renogy Smart
Lithium Iron Phosphate Batteries. DO NOT attempt to connect
the monitoring screen to other batteries or systems.

Table of Contents
General Information
Key Features
Product Overview
Identification of Parts
Dimensions
Additional Components
Installation
Preparation
Choosing an Installation Location
Mounting the Monitoring Screen
Connecting to the Battery
Operation
LCD Information
Button Operation
Troubleshooting
Technical Specifications
04
04
05
05
05
06
06
06
07
07
11
13
13
17
18
20

General Information
The Renogy Monitoring Screen for Smart Lithium Battery Series
is a high precision meter designed for Smart Lithium Iron
Phosphate Batteries in off-grid energy storage systems. Instead
of measuring the current flowing in/out of the battery bank, it
can communicate directly with the battery management system
(BMS) and obtain more accurate state of charge (SoC)
readings compared to traditional battery monitors. Other battery
bank information including voltage, current, capacity, remaining
time, error code, and number of paralleled batteries are also
available on the monitoring screen to help users avoid
abnormal conditions and extend the lifetime of battery bank.
Key Features
Plug and Play
Simply connect the monitoring screen to the battery bank using
an RJ45 communication cable for real-time monitoring.
Accurate Readings
Obtains battery bank status directly from the battery
management system for precise tracking and prediction.
Comprehensive Protection
Displays straightforward error codes for the quick recognition of
potential abnormal conditions and improper operation.
Easy Operation
Shows detailed battery bank information at the push of a button
without the need of system configuration and calibration.

Product Overview
Identification of Parts
② ③ ④ ⑤① ⑧ ⑦
⑥
LCD Screen
Page Down Button
Page Up Button
Power Button
①
②
③
④
Front Cover Plate
RJ45 Communication Port
Mounting Hole
Snap-Fit Joint
⑤
⑥
⑦
⑧
4.3in
110.0mm
2.8in
70.0mm
1.3in
31.8mm
2.3in
58.5mm
Dimensions

3.4in
87.5mm
Additional Components
RJ45 Communication Cable
The RJ45 Communication Cable
(5m / 16.4 ft) is used to connect
the monitoring screen to the
battery bank for power supply
and data transmission.
Self-Tapping Screws (4)
The Self-tapping Screws (M2.9
x 13) are used fix the monitoring
screen on the mounting surface.
Installation
Preparation
Before installing the monitoring screen, it is recommended to
have the following tools available:
Pencil
Drill
Jigsaw
Phillips Screwdriver

Choosing an Installation Location
Please choose a clean, dry, protected, and easily accessible
indoor location to install the monitoring screen. It is recommend-
ed to mount the monitoring screen at eye level for easy access
of operational controls and battery information. The RJ45
Communication Port is accessible from the back of the
monitoring screen. Clearance of at least 2 inch (50 mm) behind
the monitoring screen is recommended to allow for the bending
radius of the RJ45 Communication Cable that connects to the
monitoring screen.
Mounting the Monitoring Screen
1.
2.
3.
4.
5.
6.
7.
Remove the snap-fit Front Cover Plate from the monitoring
screen.
Use the monitoring screen as a template to mark the screw
holes and trace a cut-out area on the mounting surface with
a pencil.
Cut out a rectangular area for the monitoring screen on the
mounting surface with a jigsaw.
Pre-drill four screw holes on the mounting surface with a drill.
Place the monitoring screen into the cut-out area and align
the Mounting Holes on the monitoring screen with the
pre-drilled screw holes.
Affix the monitoring screen on the mounting surface with the
included four Self-Tapping Screws.
Re-attach the snap-fit Front Cover Plate to the monitoring
screen.

1
2

3
4