Warranty

Warranty

At RenewSpark we sell parts for building and refreshing lithium-ion battery packs — cells, BMS boards, rebuild kits, nickel, insulation, connectors and scooter parts. This page explains what’s covered on those parts, for how long, and how to make a claim.

Please note: RenewSpark does not build, rebuild or repair battery packs. We supply components and guidance so you can build your own.

Coverage at a Glance

  • Cells: covered against defects and dead-on-arrival for 30 days from delivery, while unused — see the important note below.
  • BMS boards and electronics: 90-day limited warranty against manufacturing defects, provided the board has been wired within its stated specification.
  • Rebuild kits (housing, BMS, nickel, hardware): 90-day limited warranty against defective or missing components.
  • Nickel, copper, insulation and consumables: 30 days against material defects — wrong thickness, wrong width, contamination, or plated material sold as pure.
  • Scooter parts: 90-day limited warranty against defects in materials and workmanship.

Warranty periods begin on the delivery date shown by the carrier.

Important: Cells and Installed Components

Lithium cells and electronic components cannot be warrantied once they have been welded, soldered, or installed into a pack. This is not a technicality — once a cell has been welded we have no way to distinguish a manufacturing defect from heat damage, a bad weld, an over-discharge, or a wiring fault in the build.

So test before you build. Check resting voltage and internal resistance on every cell as soon as it arrives, and tell us within 30 days if anything is out of spec. Our guide on testing cells covers the procedure.

What’s Covered

  • Cells that arrive out of spec on voltage or internal resistance, reported before use.
  • BMS boards that fail to function when wired correctly to their stated series count and current rating.
  • Rebuild kits with missing, damaged, or incorrect components.
  • Nickel or copper that does not match the stated thickness, width, or purity.
  • Any item that arrives damaged in transit, reported within 30 days of delivery.
  • Items shipped in error — wrong size, wrong variant, wrong product.

What’s Not Covered

  • Cells or boards that have been welded, soldered, or installed into a pack.
  • Damage from incorrect wiring, reverse polarity, short circuits, or exceeding a component’s rated current.
  • Normal capacity loss over time and charge cycles — expected with all lithium-ion cells.
  • Damage from misuse, drops, punctures, water, corrosion, or storage above 140°F (60°C) or below -4°F (-20°C).
  • Packs you have built — we warrant the parts we supplied, not the assembly.
  • Consequential damage to tools, chargers, scooters, or other equipment.
  • Components used outside their stated specification or in an application they were not sold for.

Safety & Usage Requirements

  • Always fit a BMS matched to your pack’s series count and current draw. Never bypass or disable it.
  • Use a charger that matches the pack voltage and chemistry.
  • Spot weld cell connections — do not solder directly to a cell can.
  • Insulate positive terminals with fish paper and protect series bridges.
  • Store cells at roughly 40–60% charge if unused for 30+ days.

How to Make a Claim

  1. Contact us first: email support@renewspark.com with your order number, a description of the issue, and photos or video. For cells, include your voltage and internal-resistance readings.
  2. Receive an RMA if needed: we’ll reply with troubleshooting steps and, where a return is required, an RMA number and the correct return address. Please do not ship any lithium cells or packs without an RMA.
  3. Pack safely for ground shipping: cover terminals with tape or caps, bag each item, cushion well, and ship UPS or USPS Ground — never air.
  4. Evaluation: allow 5–7 business days after we receive the item. If a covered defect is confirmed we will replace the item or issue a refund or store credit at RenewSpark’s discretion.

Damaged or incorrect on arrival: if reported and verified within 30 days of delivery, we’ll provide a prepaid return label or equivalent credit. Beyond 30 days, return shipping is the customer’s responsibility.

Limitations

  • This warranty applies to the original purchaser and is non-transferable.
  • Our maximum liability is limited to the purchase price paid for the item.
  • This warranty gives you specific legal rights; you may have other rights which vary by state.

Related Policies

Contact

Questions or claims:
Email: support@renewspark.com
Mail: RenewSpark, PO Box 10174, Westminster, CA 92685

Please do not ship any return or warranty item without an approved RMA. Lithium cells must be shipped by ground service with terminals protected.