EV Accessories and Mounting
Pylontech Fidus PRO Battery Extension Cable Kit for Futher Battery Module Connection
The Pylontech Fidus PRO Battery Extension Cable Kit is an original accessory designed to extend the battery-to-system power connections in Pylontech Fidus PRO energy storage systems. It allows installers to increase the distance between the battery modules and connected equipment such as inverters or charge controllers without compromising safety or reliability.
This extension cable kit is intended for domestic and small-scale ESS installations where installation constraints require greater flexibility in battery placement.
Function and Application
Extended Reach for Flexible Battery Placement
The extension cable kit enables installers to position Pylontech Fidus PRO batteries further away from the inverter or system controller than the standard supplied cables allow. This is particularly useful in residential installations where space limitations, ventilation requirements, or building layout influence battery location.
Typical scenarios include:
Battery installed in a different room than the inverter
Wall-mounted inverters with floor-mounted battery stacks
Technical rooms with limited layout flexibility
Designed for Pylontech Fidus PRO Systems
System-Matched Power Cabling
The extension cables are designed specifically for the Pylontech Fidus PRO battery platform, ensuring correct conductor sizing, connector compatibility, and electrical performance. This guarantees a safe and reliable power connection when extending the original cable length.
Compatible exclusively with Pylontech Fidus PRO batteries
Intended for low-voltage ESS power connections
Not suitable for other Pylontech battery series or third-party systems
Cable Quality and Reliability
High-Quality Materials
The extension cables are manufactured using durable, high-quality materials suitable for stationary energy storage installations. They are designed for long service life under normal residential ESS operating conditions.
Key characteristics:
Robust insulation for indoor ESS environments
Reliable connectors matched to the Fidus PRO system
Designed for continuous operation in battery systems
Installation and Handling
Installer-Friendly Design
The extension cable kit is designed for straightforward integration into existing Pylontech Fidus PRO installations. It connects directly between the battery and the system interface, extending the standard cable length without requiring custom cable fabrication.
Professional Installation Required
As the kit carries battery power, installation should be performed by qualified professionals in accordance with local electrical regulations and Pylontech installation guidelines.
Safety and System Integrity
Using manufacturer-matched extension cables ensures:
Correct electrical performance
Secure mechanical connections
Reduced risk of overheating or voltage drop
Preservation of system warranty conditions
Improvised or non-approved cabling should be avoided in ESS installations.
Compatibility
Compatible with: Pylontech Fidus PRO battery modules
Function: Battery power cable extension
Voltage class: Low voltage ESS
Standalone use: Not applicable
Typical Applications
Residential energy storage systems (ESS)
Installations with extended distance between battery and inverter
Retrofit or relocation of existing battery systems
Clean and flexible ESS layout design
For Installers and EPCs
The Pylontech Fidus PRO Battery Extension Cable Kit is a practical accessory for installers who need additional flexibility when positioning battery modules in residential ESS projects. By extending the original battery cabling with manufacturer-matched components, it ensures safe, reliable, and standards-compliant power connections.
For installers and EPCs, it offers:
Increased installation flexibility
Manufacturer-approved power cabling
Reduced on-site modification work
Clean and professional ESS layouts
Key Features
Extension cable kit for Pylontech Fidus PRO batteries
Designed to extend standard battery power connections
Improves flexibility in ESS installation layout
High-quality materials for long service life
Manufacturer-matched connectors
Suitable for residential energy storage systems
Low-voltage ESS power cabling
Professional installation recommended
Product Datasheet and Downloads
Datasheet Pylontech Fidus Pro 5.2 EN
Datenblatt Pylontech Fidus Pro 5.2 DE
Inverter Compatibility List for Pylontech LV Batteries
Manufacturer Warranty Pylontech Fidus Pro Series
FAQ about Pylontech Fidus Pro Cable Kit
It is used to extend the power cable length between Pylontech Fidus PRO batteries and connected ESS components, allowing more flexible battery placement.
No. It is only required when the standard supplied battery cables are not long enough for the installation layout.
No. The extension cable kit is designed exclusively for the Pylontech Fidus PRO battery series and is not compatible with other Pylontech models.
For the Pylontech Fidus low-voltage (48V) battery family (Fidus-L / “Fidus 5.2 LV”), the official Pylontech compatibility list (Ver. 2.40, last update 2025-08-15) shows compatibility with the following inverter platforms (always confirm exact model + firmware before commissioning).
Compatible inverter brands and model families (as listed by Pylontech)
“Core” EU installer ecosystems (most requested)
Victron Energy: MultiPlus 48V / Quattro 48V (via Venus OS, CAN)
SMA: Sunny Island SI 4.4-M / SI 6.0-H / SI 8.0-H / SI 6048US (CAN)
GoodWe: GW-BP/SBP, GW-ES/ES-C10, EM (CAN)
Sofar: ME3000SP, HYD series (RS485/CAN)
Solis: RHI/RAI, S5/S6 EA, S5/S6 EH (LV), plus S6-EH2P (9.6–16)K (CAN, some PV-only use cases noted)
Deye (Sunsynk): SUN-SG01LP1 / SUN-SG03LP1 / SUN-SG04LP1 / SUN-SG04LP3 (CAN)
Growatt: SPH 3000–6000, SPF 2000–5000 (HVM-48/LVM-48P), SPF 5000/6000 ES (PLUS), SPF 12000T DVM-US, M2000H/3000H/5000H-48 (CAN/RS485 depending model)
Lux Power: LXP 3–6K Hybrid, ACS, SNA, LXP-LB EU/US series (CAN)
Sungrow: SH5K (CAN)
Hoymiles: HYS-LV series (CAN)
Off-grid / hybrid specialist platforms (also on the list)
Schneider Electric: Conext XW Pro series (CAN)
Studer Innotec: Xtender 48V / VarioString / VarioTrack (CAN)
Voltronic: Infinisolar 48V, Axpert 48V (RS485)
Sol-Ark: multiple 48V platforms (5K/8K/12K etc.) (CAN)
Plus additional brands shown in the same official list (Afore, SAJ, Ingeteam, Delios, Megarevo, Sorotec, Livoltek, etc.).
Important installer notes from Pylontech (don’t skip these)
Victron (Multi/Quattro via Venus): in off-grid mode, Pylontech notes you may need a Victron MPPT or other compatible PV inverter with Victron to avoid shutdown.
Growatt SPF / M series: set battery DoD to 80% or lower, otherwise the system may shut down and require manual recharge.
SMA Sunny Island SI: follow SMA minimum configuration guidance; also Force-L1/L2 isn’t compatible with SMA SI (relevant if you’re mixing battery families).
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