DEFA Power™ Release Notes

DEFA Power

• Item Name: DEFA Power 
• Item No: 715000, 715001, 715002, 715003, 715015, 721000, 721001
• FW Version: 4.13.15 
• Released: 25.08.2026

New Features 

• Extend component test for ISO 15118-2 Plug & Charge 

Bug Fixes and Improvements  

• Bug fixes related to user interface
• Fixed reported phases in use to backend and phase selection bugs
• Improved OCPP time stamp parsing
• Resend junction request when resolving configuration mismatch in facilities
• Load balancer improvements: fix bug in calculating uncontrollable loads
• Fixed rare cases of wrong reporting of relay weld detection
• Improved system logging to better detect and prevent potential future issues  

Compatible with the following versions: 

• DEFA Balancer and Balancer S: FW v. 3.4.0 
• DEFA Power app: From version: 2.0.1 or newer 
• DEFA Power Setup app: From app version: 3.2.0 or newer 
• DEFA IoT Console: 4.1.6 
• DEFA Power FW v. 4.13.15** 
  **For Power in a facility this version is not backward compatible to 3.x.x and requires all charging stations in a facility/junction to have minimum FW v. 4.1.1 or newer. 

DEFA Power

• Item Name: DEFA Power 
• Item No: 715000, 715001, 715002, 715003, 715015, 721000, 721001 
• FW Version: 4.13.1 
• Released: 19.01.2026 

What’s new in this update:

This update brings improved stability, new charging features, visual enhancements, and important bug fixes to deliver a more reliable and user-friendly charging experience. 

 Improved Stability and Connectivity 

• Enhanced handling of 4G connectivity and network transitions 
• Improved network recovery to ensure stable and reliable communication 

New Features 

• Support for AutoCharge 
• Support for ISO 15118-2 Plug & Charge 
• Ability to set an installation password for improved security and access control 

Visual Updates 

• New “Ready” screen for a clearer and more intuitive user experience 
• Updated QR code and logo screen, now available without requiring access control 

Bug Fixes and Improvements 

• Fixed issues related to metering data in charging transactions 
• Resolved rare cases where chargers could become stuck in connection loops 
• Improved system logging to better detect and prevent potential future issues 

Compatible with the following versions:

• DEFA Balancer and Balancer S: FW v. 3.4.0 
• DEFA Power app: From version: 2.0.1 or newer 
• DEFA Power Setup app: From app version: 3.2.0 or newer 
• DEFA IoT Console: 4.1.6 
• DEFA Power FW v. 4.13.1** 

**For Power in a facility this version is not backward compatible to 3.x.x and requires all charging stations in a facility/junction to have minimum FW v. 4.1.1 or newer. 

DEFA Power

• Item Name: DEFA Power
• Item No: 715000, 715001, 715002, 715003, 715015
• HW Version: 
  BM024272 – 715000 E05
  BM023952 – 715001 E00
  BM024273 – 715002 E07
  BM024275 – 715003 E02
  BM024163 – 715015 E00
• FW Version: 4.3.11
• Released: 07.07.2025

What’s new in this update:

• Improved stability and connectivity:
  • Better handling of Wi-Fi and network changes to ensure stable communication between chargers.
• Performance improvements:
  • Reduced network load for smoother operation and fewer disruptions.
• Visual update:
  • Font adjustment on the power display for improved readability.
• QR code visibility:
  • The QR code now stays visible even after the EV is connected.
• Bug fixes:
  • Resolved issues where chargers could lose connection or fail to reconnect.
  • Fixed rare cases where chargers got stuck in connection loops.
  • Improved logging to help detect and fix potential future issues.

Compatible with the following versions:

• DEFA Balancer and Balancer S: FW v. 3.4.0
• DEFA Power app: From version: 2.0.1 or newer
• DEFA Power Setup app: From app version: 2.2.0 or newer
• DEFA IoT Console: all
• DEFA Power FW v. 4.3.11**

**For Power in a facility this version is not backward compatible to 3.x.x and
requires all charging stations in a facility/junction to have minimum FW v. 4.1.1 or
newer.

DEFA Power

• Item Name: DEFA Power
• Item No: 715000, 715001, 715002, 715003, 715015
• HW Version: 
  BM024272 – 715000 E05
  BM023952 – 715001 E00
  BM024273 – 715002 E07
  BM024275 – 715003 E02
  BM024163 – 715015 E00
• FW Version: 4.3.3
• Released: 2025-03-05

Improvements

• Enhanced modem network stability and performance
• Fixed issue where modem signal strength was not updating in the console
  tool
• Improved naming and clarity of diagnostic error messages
• Multiple enhancements to multicast and unicast handling for more reliable
  network connectivity
• Improved load balancing for single-phase charging in three-phase facilities
  during network outages

New Features

• Support for simple hybrid installations: single junction setups using both
  CLU (with eRange chargers) and DEFA Power
• Added support for ISO 15118-20 protocol

Compatible with the following versions:

• DEFA Balancer and Balancer S: FW v. 3.4.0
• DEFA Power app: From version: 2.0.1 or newer
• DEFA Power Setup app: From app version: 2.4.0 or newer
• DEFA IoT Console: all
• DEFA Power FW v. 4.3.3**

**For Power in a facility this version is not backward compatible to 3.x.x and
requires all charging stations in a facility/junction to have minimum FW v. 4.1.1 or
newer.

DEFA Power

• Item Name: DEFA Power
• Item No: 715000, 715001, 715002
• HW Version: BMO22966 – 715000 E05
• FW Version: 4.4.1
• Released: 2024-09-26

New Features

• Support for connecting DEFA Power to Modbus units
• Soft reboot functionality available via the DEFA IoT Console
• Added support for the following OCPP 2.0.1 use cases: N02, N03, N04, N05,
  N06, N07, N08
• mDNS functionality enabled

Bug Fixes

• Improved status handling during network loss in setup
• Enhanced load balancing performance
• Resolved connectivity issues with some vehicles
• Fixed issue preventing MAX power setting via the DEFA Power app
• Added an additional digit to displayed price information for improved
  accuracy

Compatible with the following versions:

• DEFA Balancer and Balancer S: FW v. 3.1.0, 3.2.0, 3.2.1
• DEFA Power app: From version: 2.0.1 or newer
• DEFA Power Setup app: From app version: 2.3.0 or newer
• DEFA IoT Console

DEFA Power

• Item Name: DEFA Power
• Item No: 715000
• HW Version: BM022966 – 715000 E05
• FW Version: 3.3.4
• Released: 2024-06-20

Fixes

OCPP use case E04, E12, J01, B05, B06
Improve to Balancer timeout
Improved network stability on ethernet and Wi-Fi
Improved handling of RCD tests

Additional Notes:

Compatible with the following products:

• 715004 – DEFA Balancer
• 715008 – DEFA Balancer S
• DEFA Power Setup app
• DEFA Power App
• DEFA IoT Console

Compatible with the following versions:

• DEFA Power app: From version: 2.0.1 or newer
• DEFA Power Setup app: From app version: 2.0.1 or newer
• DEFA Balancer: From FW version: 3.1.0 or newer

DEFA Power

• Item Name: DEFA Power
• Item No: 715000
• HW Version: BM022966 – 715000 E05
• FW Version: 3.1.3
• Released: 2024-02-08

Bugfixes/features

• Updated behavior in “preparing” state when EV is connected to the
  charging station.
• Data package improvement for network during configuration
• Improvements to grid sanity check
• Graceful stopping when magnet lock open is detected.
• Improvements to network connection attempts and when connection
  is lost.
• Update of modem connection/reconnection cycle.

Additional Notes:

Compatible with the following products:

• 715004 – DEFA Balancer
• DEFA Power Setup app
• DEFA Power App

Compatible with the following versions:

• DEFA Power app:
  o FW version: 2.0.1
• DEFA Power Setup app:
  o FW version: 2.0.1
• DEFA Balancer:
  o FW version: 3.1.0
  o FW version: 3.2.1

DEFA Power

• Item Name: DEFA Power
• Item No: 715000
• HW Version: BM022966 – 715000 E05
• FW Version: 2.5.5
• Released: 2023-11-20

Features

Support of Edge Load Balancing for multiple DEFA Power units in a system.

• Support for TN and IT grid
• Single Junction level load balancing
• Dynamic Load Balancing including 3-1 Phase selection
• Fully Dynamic Load Balancing with DEFA Balancer
• Queing functionality in a load balancing system

Additional Notes:

Compatible with the following products

• 715004 – DEFA Balancer
• DEFA Power Setup app
• DEFA Power App

Compatible with the following versions:

• DEFA Power app:
  o FW version: 2.0.1
• DEFA Power Setup app:
  o FW version: 2.0.0
• DEFA Balancer:
  o FW version: 3.1.0
  o FW version: 3.2.1

DEFA Power

• Item Name: DEFA Power
• Item No: 715000
• HW Version: BM022966 – 715000 E05
• FW Version: 2.5.5
• Released: 2023-11-20

What’s new

Support for OCPP use case B07, C05, C09, C13, C14, C15, D01, D02, E04, E15,
F01, F02, F03, F06, G02, K01, K02, K04, K05, K06, K09, K10, N01, P01

• Cloud based load balancing – charging profiles
• Uploading diagnostics logs from Charging Station
• Data transfer – CPO specific logo and price information on display
• Base report – retrieving Charging Station configuration
• Trigger messaging – CPOs can trigger messaging from the Charging Station 
• Added firmware Update screen to the charging station

Fixes

• Improved behaviour for RCD when the charging station is in State Ready and Preparing.
• Fixed issue related to unable to clear the RCD test fail error screen.

Additional Notes:

• Compatible with the following products and versions:
  • DEFA Balancer: FW versions 3.1.0 and 3.2.1
  • DEFA Power Setup App: FW version 1.1.0
  • DEFA Power App: FW version 2.0.1