
EG4 Update Dongle (LP4)
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.
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
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.
More Accessories

2023 NEC Sticker Pack
This sticker pack covers the labels and placards a solar install needs to pass inspection under the 2023 NEC. It includes the rapid shutdown placards, disconnect and inverter markings, conduit labels, and the power source directory, all printed on durable weather-rated stock that meets the code’s permanence rules. One pack handles the common warning and identification points on a typical residential system.
$20
EG4 Ethernet Adapter
This is EG4's wired monitoring adapter (part EG4SP18KDLETH), the small box that carries your inverter's data to the EG4 app over a network cable instead of WiFi. It plugs into the inverter's monitoring port, and a standard RJ45 Ethernet line runs from the cable gland on its body back to your router. Three status lights sit on the face so you can read the connection at a glance: INV for the link to the inverter, a cloud light for the reach out to the EG4 portal, and IP for its network address. There is a reset button, and the unit mounts to the inverter with its built-in faceplate. It works across the EG4 inverter line, the 3k Off-Grid being the exception. The reason to run this over the WiFi dongle is that a cable does not drop. If the inverter lives in a garage, a shop, or a back corner where the WiFi is thin, a wireless adapter that keeps falling offline leaves gaps in your history and an app that shows nothing right when you want a look. Wire it straight to the router and the link stays up, so the numbers keep coming in. If there is a network jack anywhere near the inverter, this is the steadier way to keep eyes on the system.
$33
EG4 Indoor Conduit Box Top Plate (100Ah WallMount)
This is EG4's indoor conduit box for the 100Ah WallMount battery and the 6000XP off-grid inverter. It gives the wiring between the two a clean, enclosed run instead of leaving cable out in the open. The box measures 17.8 inches long, 7.08 inches wide, and 7.9 inches tall, and it ships as a kit with the plates, screws, and parts to put it together (model EG4SP48V100AHIDWMBCNDTBOXV1). The part that earns its keep is the matching knockouts on both the left and right plates, so you can bring conduit in from whichever side lines up with your wall and panel. You build it to fit the install rather than working around one fixed opening. Pair it with the WallMount battery and the 6000XP and the finished wall reads like a real electrical job instead of a pile of loose cable.
$50