VoltSource Wholesale is a manufacturer-authorized export partner. We don't own a factory and we won't pretend to — we hold authorized export agreements with battery-belt manufacturers, combine their ex-factory pricing with buyer-side quality control, and give you one accountable English-speaking contact.
Partner clusters: battery-assembly manufacturers in Shenzhen & Dongguan, charger and cable specialists in Shenzhen, accessories makers in Dongguan.
Trade references and business registration documents available at contract stage.
Capacity, internal resistance and cycle-rating checks on every cell lot; graded cells rejected at the gate.
Protection-board verification: over-charge, over-discharge, short-circuit and temperature cutoffs tested per batch.
Full charge–discharge aging on sampled units per lot — real capacity vs. claimed, plus output stability under load.
Statistical sampling with a full photo report shared before balance payment and DG booking.
Evaluation-stage documents are shared watermarked; originals travel with the order.
UN38.3 test summaries and MSDS per battery model — air, sea and DG express channels handled with established forwarders.
CE, RoHS, FCC and destination-specific documentation per model, compiled into one indexed pack — model numbers always match the goods.
Dated, watermark-free report per shipment: aging-test records and container loading photos included as standard.
Ask for a video call, a factory walk-through or reference contacts — buyers who check carefully are the ones we keep.