Yes. We provide airway bill, packing and outer box photos after shipment.

Response within 2 working hours; emergency solutions within 1 hour.

Yes. BMS built-in lock function; auto-lock at low voltage to protect cells.

The cells are produced in our own factory. Customer factory audits are supported to view the production process.

Normal. Monthly self-discharge ≤3%; capacity recovers after recharging.

No mandatory requirement; long-term cooperation enjoys more benefits.

Lead time may extend 1–3 days during holidays; priority arrangement available with advance notice.

Yes. Small trial orders are available for quality verification before mass production.

We remake samples free of charge until they pass testing.

For quality-related batch defects, we cover round-trip shipping and related losses.

Yes. Integrated in BMS or external circuit; safety level can be upgraded.

Yes. All common connectors available; wire length, gauge and color customizable.