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We've been shipping these USB-C rechargeable lithium batteries for about two years now, and the 18650 format is definitely the most popular—roughly 70% of orders land on that one, though we also do AA, AAA, D size, and 9V depending on the device. The NCM cathode material gives them a solid 1000+ cycle life, which is better than standerd LiFePO4 for high-drain applications, but they're not ideal for extreme cold storage below -20°C (check your warhouse temps before stocking bulk). CE and ROHS are, and we provide MSDS and UN38.3 docs with shipment—usually within 2 business days after payment clears.
Actually, the USB-C charging port is what most procurement folks highlight—it saves them from sourcing separate chargers, and the 0.5C standard charge current means a full top-up in about 2 hours give or take. We've had a few clients push for the 4.2V±0.05V charging spec to match their existing BMS, and that's fine since our internal resistnce stays under 80mΩ, keeping heat low during fast cycles. Anyway, the 1-year manufacturing defects, but we usually have stock on the 18650 and AA sizes, though lead time for custom dimensions can stretch to 20 days or so.
One thing I'd flag: the max continuous discharge current varies by model, and we don't list exact numbers on the COA unless you request it—some buyers overlook this and then ask for a swap when their device pulls 3A from a standard-capacity cell. It's pretty much a non-issue if you specify the draw upfront, but we've had returns because of mismatched expectations. For high-drain tools or flashlights, go with the higher-capacity variants (usually 3000mAh or up)—they handle sustained loads better than the base capacity options.
Payment is typically 30% deposit and 70% before shipment via T/T, though we've done L/C for larger orders over $10k. Shipping documents include the COA, TDS, and the UN38.3 test report—make sure your forwarder expects the lithium battery label, or it can hold customs for a day or two. We pack them in individual sleeves inside anti-static trays, but the 9V format requires a different box since the terminals are exposed.
The nominal voltage is 3.7V, and charging voltage hits 4.2V±0.05V—so it pairs well with standard Li-ion chargers. Not suitable to devices that need a constant 1.5V output unless you add a regulator, which some buyers don't anticipate.
We offer these in 18650, D size, AA, AAA, and 9V formats. So you can pick the exact shape that fits your device, and we can also customize dimensions if you need something specific.
Lead time is usually around 15-20 working days for standard orders, and our MOQ for custom sizes is 500 pieces per model. If you need less, we can check stock on standard sizes.
Yes, we can share all those certificates—CE, ROHS, MSDS, and UN38.3—right away. Just ask, and we'll send them over so you can verify compliance before ordering.
It varies depending on the capacity you choose, but typically our 18650 cells support up to 15A continuous discharge. Let me know the mAh you need, and I'll give you the exact spec.
Store them in a cool, dry place between -20°C and 45°C, ideally at around 50% charge. Avoid extreme temps and direct sunlight, and keep them in their original packaging or a non-conductive case.
