Frequently Asked Technical Questions

Find detailed answers to all your questions about our original Pylontech parallel cables and Amphenol connectors.

  • What is the difference between your cables and the standard cables supplied with batteries?

    Our parallel cables differ from standard cables supplied by battery manufacturers in several important ways:

    • Adaptable length: While standard cables are generally limited to 0.6m, we offer different lengths (0.45m, 1m, 2m and custom) to perfectly suit all installation configurations.
    • Superior quality: Our cables use class 6 (extra-flexible) tinned copper of 25mm² which offers better conductivity and greater flexibility than standard cables.
    • Original Amphenol connectors: We exclusively use original Amphenol SURLOK Plus Radsok connectors, renowned for their reliability and exceptional performance.
    • Reinforced insulation: Our cables feature EPR (ethylene-propylene rubber) insulation and HOFR (heat, oil and flame resistant) sheathing for maximum durability and safety.

    These features make our cables the ideal solution for professional installations and for anyone seeking long-term reliability in their energy storage system.

  • Why do I need specific parallel cables?

    Specific parallel cables are essential for several reasons:

    • Safety: Modern lithium-ion batteries can deliver very high currents. Poor quality or undersized cables can overheat, create significant voltage drops or even melt in extreme cases.
    • Performance: High-quality parallel cables minimise power losses and ensure optimal energy transfer between batteries, improving the overall efficiency of the system.
    • Reliable connectivity: Specialised connectors such as the original Amphenol SURLOK are designed to maintain perfect electrical contact even in the event of vibrations or temperature variations, unlike generic connections that can deteriorate over time.
    • Durability: As battery systems are generally designed to last 10 years or more, investing in quality cables helps avoid future problems and ensures the longevity of the installation.

    In summary, using specific parallel cables is not a luxury but a necessity to guarantee the safety, performance and longevity of your energy storage system.

  • What cable length should I choose for my installation?

    The choice of cable length depends mainly on the configuration of your installation. Here are our recommendations:

    • 0.45m (450mm) cables: Ideal for installations where batteries are stacked vertically on top of each other. This compact length minimises clutter while offering enough flexibility for easy installation.
    • 1m cables: Perfect for configurations where batteries are placed side by side. This is the most versatile length that suits the majority of standard residential installations.
    • 2m cables: Recommended for installations where batteries must be placed at a distance from each other. This length is particularly suitable for motorhomes, boats or installations where space is limited and does not allow batteries to be placed in close proximity.
    • Custom cables: If none of the standard lengths suit your configuration, we offer a custom manufacturing service. This is particularly useful for complex or atypical installations.
    Tip

    To determine the ideal length, measure the distance between connection points and add about 20% margin to account for the necessary curves and routing. If in doubt, opt for a slightly longer length rather than too short.

  • What is the lifespan of parallel cables?

    The lifespan of our parallel cables is designed to be at least equivalent to that of your batteries, generally 10 years or more under normal conditions of use. Several factors contribute to this longevity:

    • Original Amphenol connectors: Unlike generic connectors, original Amphenol SURLOK Plus Radsok connectors are engineered for thousands of connection cycles without loss of contact quality.
    • Reinforced insulation: The EPR insulation and HOFR sheathing resist heat, oil and flame, protecting the internal conductors from degradation over time.
    • Correct sizing: Using the right cable length and gauge (25mm² class 6 tinned copper) for your installation avoids the overheating and stress that shorten the lifespan of undersized cables.
    • Installation environment: Cables kept away from direct sunlight, excessive moisture and mechanical stress will typically outlast the manufacturer-estimated lifespan.

    We guarantee worldwide shipping and stand behind the quality of every cable, whichever brand of battery you use them with.

  • Are your cables compatible with all lithium battery brands (Pylontech, BYD, Goodwe, Sunsynk...)?

    Our catalog covers the main residential and commercial lithium battery brands on the market: Pylontech, BYD, Goodwe, Sunsynk, Dyness, Sofar, Growatt, Zucchetti, Pytes, Turbo Energy, AP Systems and other compatible systems.

    Each product page states exactly which battery and inverter models it supports (battery-to-battery parallel cable or battery-to-inverter communication cable). If you are unsure about compatibility with your installation, contact our support team before ordering - we would rather check in advance than have you receive an unsuitable cable.

    If your exact configuration is not in the standard catalog, our custom cable configurator lets you define a length and connectors suited to your specific installation.

  • What are your delivery times and return policy?

    Orders placed before 2pm on a business day are generally shipped the same day, subject to stock availability. Estimated delivery times after shipment are:

    • European Union: 3 to 5 business days
    • United Kingdom / other Europe: 3 to 7 business days
    • Rest of the world: 5 to 10 business days

    Shipping cost is calculated in real time based on the actual carrier rate and your destination, and is always shown before you confirm your order. In line with EU consumer law, you have a 14 calendar day withdrawal period from receipt of your order to return an unused product in its original packaging.

    Full details of our shipping and returns policy are on our Shipping & Returns page.