A compact, IoT-connected battery monitoring device that connects to your BMS lithium batteries via Bluetooth Low Energy or CAN bus and reports everything to the cloud — from anywhere in the world.
The LW Node sits near your batteries, reading every data point your BMS exposes and transmitting it via cellular or Wi-Fi connectivity every 60 seconds. With built-in GPS tracking, geofencing, and optional battery backup, it's the complete solution for remote battery intelligence.
LW Node
Compact IoT Battery Monitor
The LW Node connects to a wide range of BMS lithium batteries via Bluetooth Low Energy or CAN bus. It reads every data point the BMS exposes and sends it to the Lithium Watch cloud platform via cellular or Wi-Fi connectivity.
Every 60 seconds, the LW Node reads your battery management system and transmits a full snapshot of its state. No data is left behind. You get the same level of detail as if you were standing next to the battery with a Bluetooth app on your phone — but from anywhere in the world.
BMS Lithium Battery
Any supported BMS brand (BLE or CAN)
LW Node
Reads BMS + GPS, transmits via cellular or Wi-Fi
Lithium Watch Cloud
Stores, analyses, and alerts on your data
You
Real-time alerts via your preferred channel
More than a battery monitor — a complete asset intelligence platform.
Connect from anywhere in the world. The LW Node supports 4G/LTE cellular connectivity — no on-site Wi-Fi required. We can reach your devices wherever they're deployed, from remote hilltops to construction sites.
Built-in GPS module reports real-time location of every device. Track your assets on a live map, review location history, and know exactly where your batteries are at all times.
Set virtual boundaries around your assets. If a device is moved outside its designated area — especially after hours — you'll get an instant alert via SMS, WhatsApp, or Telegram. Configurable time windows, dwell times, and speed alerts.
Optional internal battery backup keeps the LW Node running even when the main power source is disconnected. If someone disconnects the batteries or cuts the power, the node continues to report its GPS location and status. Multiple battery backup sizes available.
Get notified your way. Receive critical alerts via SMS, WhatsApp, Telegram, or email. Reply to messages to get instant status updates powered by AI. Never miss a battery issue again.
Works with a wide range of BMS manufacturers via Bluetooth Low Energy and CAN bus protocols. From JBD and Daly to Pylontech and BYD — we support the systems you already use.
Up and running in three simple steps. No apps to install, no complex configuration.
Place the LW Node near your batteries, within BLE range. Power it with the included USB-C cable, or opt for 12V/24V/48V DC direct wiring. The optional internal battery backup keeps it running even if power is cut.
On first boot, the LW Node creates a Wi-Fi hotspot. Connect to it from your phone and enter your Client Code and PIN. For cellular units, we pre-configure the SIM — it's plug and play.
The node auto-discovers compatible batteries in range, registers with the cloud, and starts reporting. Log in to your dashboard to see live data, GPS locations, set up geofences, and configure alerts.
Everything you need to know about the LW Node.
Bluetooth
BLE 5.0
Cellular
4G/LTE with global SIM
Wi-Fi
802.11 b/g/n (optional)
GPS
Multi-constellation GNSS
BMS Protocols
BLE + CAN bus (multi-manufacturer)
Geofencing
Exit/enter/speed alerts with time windows
Power Input
USB-C (5V)
Custom Power
12V / 24V / 48V DC available on request
Battery Backup
Internal backup battery (configurable size)
LED Indicator
RGB status LED
BLE Range
Up to 10 metres
Data Interval
Every 60 seconds
Auto-Discovery
Finds compatible batteries automatically
Multi-Battery
Multiple batteries per node
OTA Updates
Firmware updates over-the-air
Alerts
SMS, WhatsApp, Telegram, Email
Enclosure
Compact, weather-resistant design
Operating Temp
-20°C to +60°C
Whatever lithium battery you've installed, chances are we support it. The LW Node connects to these popular battery brands and reads every data point the battery exposes.
Pylontech
US2000, US3000, US5000 Series
BYD
Battery-Box Premium HV / LV
Freedom Won
eTower, Lite Home Series
Hubble
AM-2, AM-4, AM-5 Lithium
Dyness
Tower T10, T20 Series
BSL
BSL Lithium Batteries
Revov
2nd LiFe Battery Range
BlueNova
BN Series LiFePO4
Sunsynk
Sunsynk Battery Storage
Growatt
ARK Battery Series
Deye
RW-M Battery Series
Victron Energy
Smart Lithium LiFePO4
EG4
LifePower4, WallMount
Battle Born
LiFePO4 Deep Cycle
SOK Battery
Server Rack LiFePO4
Fortress Power
eVault, eFlex Series
Mecer
SOL-I-BB LiFePO4
RCT Power
RCT Battery Storage
Felicity Solar
LiFePO4 Range
GSL Energy
PowerWall, Server Rack
Under the hood, the LW Node speaks the protocols of the most popular battery management systems. We support both Bluetooth Low Energy and CAN bus connections, so your batteries can be monitored wirelessly or via hardwired connection.
Wireless connection — no physical wiring to BMS required
JBD
Xiaoxiang / Jiabaida
Daly
Daly BMS
JK BMS
Jikong BMS
ANT BMS
ANT Smart BMS
Victron
Victron SmartShunt
Overkill Solar
Overkill Solar BMS
Smart BMS
Generic Smart BMS
LLT Power
LLT / Neey BMS
Seplos
Seplos BMS
Pace
Pace BMS
EG4
EG4 BMS
Wired connection via CAN protocol — for high-reliability installations
Pylontech
Pylontech Energy
BYD
BYD Battery-Box
Freedom Won
FreedomWon
Dyness
Dyness Power
Hubble
Hubble Lithium
BSL
BSL Battery
Revov
Revov Energy
BlueNova
BlueNova Energy
Sunsynk
Sunsynk Battery
Felicity
Felicity Solar
Deye
Deye BMS
Growatt
Growatt Battery
Every data point your BMS exposes, captured and reported to the cloud automatically.
State of Charge
SOC %
Total Voltage
Pack V
Current
Amps
Temperature
All Sensors
Cell Voltages
Individual
Cell Delta
Imbalance
Charge Status
On/Off
Discharge Status
On/Off
Fault Flags
Protection
GPS Location
Real-Time
The RGB LED on the LW Node tells you exactly what it is doing at a glance.
Pulsing Blue
AP Mode — waiting for Wi-Fi setup
Blinking Cyan
Connecting to network
Solid Green (brief)
Network connected successfully
Breathing Green
Normal operation — scanning and reporting
Pulsing Yellow
Registering with cloud server
Blinking Red
Error — network failed or server unreachable
Off
Powered off or deep sleep
A powerful web-based dashboard gives you full visibility and control over all your batteries, from anywhere.
Organise batteries across multiple locations. Each site has its own overview, alerts, and analytics.
See all your devices on an interactive map with real-time GPS positions. Track location history and monitor asset movement.
Create virtual boundaries on the map. Set up exit, entry, and speed alerts with configurable time windows and dwell times.
Interactive charts showing SOC trends, voltage patterns, charge/discharge cycles, and temperature history over time.
Set thresholds for SOC, voltage, temperature, and cell delta. Get notified via SMS, WhatsApp, Telegram, or email.
Admin, manager, and viewer roles. Control who can see what across your organisation.
Integrate battery data into your existing systems. Build custom dashboards or feed data to your monitoring tools.
Each client sees only their own sites, devices, and data. Fully isolated with secure authentication.
Reply to alert messages and get instant battery status updates powered by AI. Ask questions in natural language.
Need to pull battery data into your own systems? The Lithium Watch REST API gives you programmatic access to all telemetry data, battery status, GPS locations, and alert information.
GET /api/telemetry?battery_id=42&latest=1
{
"battery": "Tower North - Bat 1",
"soc": 87,
"voltage": 13.28,
"current": -2.45,
"temp1": 23.5,
"cells": [
3.321, 3.318, 3.320, 3.319
],
"cell_delta": 0.003,
"gps": {
"lat": -26.2041,
"lng": 28.0473,
"satellites": 8
},
"charging": false,
"faults": "none",
"timestamp": "2026-03-04T14:32:00Z"
}Get peace of mind with real-time lithium battery monitoring. Contact us for pricing and availability.