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/ FAQ

Find your answer

  • Do you manufacture the cells yourself?

    Pending customer verification

    [To be decided — this answer touches the cell strategy and should be set deliberately.]

  • Can you match my existing pack?

    Usually. Send the configuration, dimensions, connector and a datasheet or photo, and we state what fits and what it gains you.

  • Can I receive samples first?

    Pending customer verification

    Yes, evaluation packs for [qualified customers]. Tell us the platform and the mission profile.

  • What are your lead times?

    Pending customer verification

    Standard packs [x] weeks. Custom packs [x] weeks to first article and [x] weeks to series.

  • What is the minimum order quantity?

    Pending customer verification

    Standard packs from [x] units. For custom packs it depends on the configuration.

  • What do I do with a damaged or end-of-life pack?

    Pending customer verification

    Discharge where it is safe to do so, isolate the terminals and return the pack through [the Tulip return process] or local collection. Never ship a damaged pack by air.

  • When should a pack be retired?

    Pending customer verification

    At [80] % of original capacity, or earlier in case of cell imbalance, swelling or mechanical damage. Smart packs flag this themselves. VARIES BY CHEMISTRY.

  • What is the cycle life?

    Pending customer verification

    Stated per product: [x] cycles to 80 % of original capacity, at [x] C and [25] °C. Service life depends on how the pack is used. VARIES BY CHEMISTRY.

  • How long can packs be stored?

    Pending customer verification

    [x] months without recharging; total shelf life [x] years when stored as above. VARIES BY CHEMISTRY.

  • How often should stored packs be checked?

    Pending customer verification

    Every [3] months: check the voltage and top up to storage charge if it has dropped.

  • How should packs be stored?

    Pending customer verification

    At [40–60] % state of charge, [15–25] °C, dry, in a fire-safe container with the terminals protected. VARIES BY CHEMISTRY.

  • Can packs be left on the charger?

    Pending customer verification

    No. Disconnect once charging completes, and set the pack to storage charge if it will not be used within [x] days.

  • How do I know the pack is full and healthy?

    Smart packs report state of charge and state of health. For standard packs, read the cell voltages on the charger.

  • Can I charge in the cold?

    Pending customer verification

    Not below [0] °C cell temperature. Charging a cold lithium cell causes permanent damage. Warm the pack first. VARIES BY CHEMISTRY.

  • Can I fly immediately after a fast charge?

    Pending customer verification

    Yes for packs validated for it. We test fast charge followed by immediate flight, including pack temperature during the climb.

  • How fast can the pack be charged?

    Pending customer verification

    Standard charge [0.5] C. Selected packs accept fast charge up to [x] C, which shortens cycle life. VARIES BY CHEMISTRY.

  • Which charger do I need?

    Pending customer verification

    Any balance charger matching the pack chemistry, a maximum cell voltage of [x.xx] V and a maximum current of [x] C. Smart packs report their limits to a compatible charger. VARIES BY CHEMISTRY.

  • Can you deliver a European supply chain?

    Pending customer verification

    For [selected] packs, yes. Tell us the requirement and we state what is possible per cell.

  • Where are the packs manufactured?

    Pending customer verification

    Designed and engineered in the Netherlands; assembled in [NL and at partner sites]. Cell origin is documented per pack.

  • Are your products export-controlled?

    Pending customer verification

    Standard packs: [no licence required within the EU]. Packs for defence programmes are assessed per project and we advise on the classification.

  • Can the packs be shipped by air?

    Pending customer verification

    Yes, as dangerous goods with UN38.3 documentation and an MSDS. Air freight imposes limits on state of charge and packaging, which we apply. VARIES BY CHEMISTRY.

  • Are the packs lithium-ion or lithium-metal for transport?

    Pending customer verification

    It depends on the pack. Lithium-ion packs are shipped as UN3480 / UN3481, lithium-metal packs as UN3090 / UN3091. The classification is stated per pack in the documentation. VARIES BY CHEMISTRY.

  • Which other standards do you design to?

    Pending customer verification

    [IEC 62133-2, UL, MIL-STD-810 environmental].

  • Can I see the test report before ordering?

    Yes. We provide the UN38.3 test summary on request, and it accompanies every shipment.

  • Are your battery packs UN38.3 tested?

    Pending customer verification

    Packs released as Tulip Standard are UN38.3 tested and ship with a test summary. For custom packs we complete testing before the first series delivery; prototype batches may ship under a transport exemption.