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EG4 Update Dongle (LP4)
EG4

EG4 Update Dongle (LP4)

$3each

This is the little box that pushes fresh firmware into EG4 LifePower4 48V batteries without a laptop and without fighting BMS software. It works with the Version 1 LifePower4, plugs into the battery's RS485 port with a standard one-foot CAT5 cable, and draws power from any USB source you already own (a power bank, a PC, or a USB charger) through either its USB-C port or its USB-A plug. Three status lights, two green and one red, tell you where the update stands, and a single chrome button on top starts it. The unit ships loaded with firmware v3.37, or v2.19 depending on your battery's hardware.

EG4Accessories

Order-in: ships from our supplier, usually about a week.

5.036 Google reviews
Model
1511006-UD
Control
Chrome push button (hold approx 3 seconds to start update)
Function
Automatic firmware updater for EG4 LifePower4 48V batteries
Indicators
3 LEDs (2 green: G1/G2, 1 red)
Power input
USB (USB-C female port or USB-A male plug), from power bank, PC, laptop, or USB charger
Update time
Approx 60 seconds per battery
Overview

About this item

This is the little box that pushes fresh firmware into EG4 LifePower4 48V batteries without a laptop and without fighting BMS software. It works with the Version 1 LifePower4, plugs into the battery's RS485 port with a standard one-foot CAT5 cable, and draws power from any USB source you already own (a power bank, a PC, or a USB charger) through either its USB-C port or its USB-A plug. Three status lights, two green and one red, tell you where the update stands, and a single chrome button on top starts it. The unit ships loaded with firmware v3.37, or v2.19 depending on your battery's hardware.

What earns its keep is speed and simplicity. Set the battery's DIP switches to address 0, connect the cable, hold the button about three seconds, and the update runs in roughly 60 seconds per battery. Two things to know going in: it updates one battery at a time, and it carries the firmware version it came with and cannot be reloaded with a newer one later. If EG4 puts out something past v3.37, that update goes through the BMS software and the proper cable instead, so this dongle is the fast, no-computer path to the firmware it holds.

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