EG4 RS485 USB Read/Write Firmware Update Cable (LP4 & LL)
This is the EG4 RS485 read/write cable that connects an EG4 battery to a Windows PC. One end is a standard USB-A, the other is an RJ45 that lands in the battery's RS485 port, and there is a small green pluggable RS485 terminal at the USB dongle. Paired with EG4's BMS Tools software, it lets you read the pack live (state of charge, individual cell voltages, current, temperatures, and alarm status), write and confirm battery settings, and push updates to the LCD display. It works with the LifePower4 V2, the LL V2 and LL-S, and the WallMount Indoor 280Ah and All-Weather 280Ah packs.
Order-in: ships from our supplier, usually about a week.
5.036 Google reviews- Model
- EG4SPRS485RWCLPLL
- Function
- Live monitoring and read/write of battery settings over RS485 using EG4's BMS Tools software (state of charge, cell voltages, current, temperatures, alarm status), plus LCD display updates. It does not flash the BMS firmware on these packs; firmware is done with EG4's separate RS232 cable or the plug-in automatic updater dongle.
- SKU
- 1565404
About this item
This is the EG4 RS485 read/write cable that connects an EG4 battery to a Windows PC. One end is a standard USB-A, the other is an RJ45 that lands in the battery's RS485 port, and there is a small green pluggable RS485 terminal at the USB dongle. Paired with EG4's BMS Tools software, it lets you read the pack live (state of charge, individual cell voltages, current, temperatures, and alarm status), write and confirm battery settings, and push updates to the LCD display. It works with the LifePower4 V2, the LL V2 and LL-S, and the WallMount Indoor 280Ah and All-Weather 280Ah packs.
Keep one on the shelf for pulling real numbers straight off the pack instead of reading them secondhand off the inverter screen, and for setting or checking battery parameters on a commission or a service call. One point on firmware: on these newer packs EG4 flashes the BMS with its separate RS232 cable or the plug-in automatic updater, so treat this RS485 cable as your monitoring and read/write tool, not the firmware flasher. Two cautions carry over: the USB end has its own chip, so a generic RS485-to-USB cable will not stand in for it, and the battery should be off the inverter's communication line while you are connected to the PC.
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