Free US shipping over $35 24-month battery warranty Engineering support for fitment Free US shipping over $35 24-month battery warranty Engineering support for fitment
Support Center

Battery support that helps customers buy with confidence.

Shipping, returns, warranty, safety, fitment, and wholesale support for CBJJ lithium batteries. Share the right details once, and our team can confirm the next step with less back-and-forth.

Custom & Wholesale

Turn battery requirements into a quote-ready request.

Use this form for custom packs, private label, dealer pricing, repair-shop replenishment, fleet projects, marine starting, and Amazon inventory planning. Add the technical and commercial details needed for a quote-ready review.

Custom battery engineeringVoltage, capacity, case, connector, label, charger, and BMS configuration.
Wholesale and fleet supplyDealer, distributor, repair shop, course fleet, and recurring replenishment quotes.
Compliance package planningUN38.3, MSDS, carton labels, marketplace documents, and target-market notes.

Business Request

Leave the key commercial and technical details so the CBJJ team can quote without a long back-and-forth.

Store Policies

Clear rules before checkout.

These store policies are written for a US-first independent store and should be reviewed with your payment processor, warehouse, and legal advisor before launch.

Shipping & Delivery

US orders ship from CA/NJ warehouse inventory when stock is available. Large LiFePO4 packs require compliant ground freight.

  • Free US shipping over $35
  • Standard delivery: 2-5 business days
  • Lithium batteries ship with UN38.3/MSDS documentation when required

Returns & Exchanges

Unused products can be returned within 30 days. Installed, modified, damaged, or incorrectly wired batteries need support review first.

  • 30-day return window
  • Fitment exchange support before installation
  • RMA review for battery safety and transport compliance

Warranty

CBJJ warranty covers manufacturing defects, BMS faults, and abnormal capacity loss under proper use.

  • 24 months for battery packs
  • Support asks for order ID, photos, voltage, and device model
  • Excludes water damage, reverse polarity, short circuit abuse, and pack modification

Open Warranty/RMA form

Warranty / RMA

Give support the evidence needed to approve the next step.

Battery after-sale support needs a cleaner intake than a normal contact form. This flow captures order, product, voltage, charger, photos/video link, and safety notes so CBJJ can route a claim to support, warehouse, or engineering review.

Order and product proofOrder number, SKU, purchase channel, and device model help confirm eligibility.
Battery diagnosis fieldsMeasured voltage, charger model, fault date, and photos reduce repeated emails.
Safe transport reviewDamaged lithium batteries should not be shipped back without CBJJ RMA approval.
Do not ship a swollen, burned, leaking, shorted, or physically damaged lithium battery until CBJJ support confirms the RMA instructions and carrier requirements.

Warranty / RMA Request

Submit one request per order or battery pack. Add a photo or video link when possible.

FAQ

Answers for the most common pre-sale and after-sale questions.

How do I choose the right replacement battery?

Match nominal voltage, full charge voltage, connector, polarity, pack size, BMS current, and chemistry. If you are unsure, send a photo of the old label and connector through the inquiry form.

Can CBJJ batteries ship by air?

Small cells and compact packs can ship with proper compliance documents. Large LiFePO4 packs usually ship by ground or freight because of lithium transport rules.

Do you support wholesale or private label orders?

Yes. Send quantity, target market, battery model, required certification, packaging needs, and expected delivery date. The sales team can quote tiered pricing.

Which payment methods will be available?

CBJJ is prepared for major card and wallet payment methods through a secure checkout provider. Final availability depends on market, order value, shipping route, and payment review.

What evidence is needed for a warranty case?

Order number, device model, photos of the pack and connector, measured voltage, charger model, fault description, and whether the battery has been opened or modified.