A: 30% deposit in advance, balance against inspection before shipment
A: Yes, we offer free samples for quality test or other business purposes, but we kindly ask you to pay for the freight
A: If we have it in stock, the shipment could be prepared within 2 working days. For OEM orders, please contact us to discuss more details,
A: We have color box/zip bag/opp bag available. The default packaging is zip bag, if you hope to get the color box packaging, we can send you the die-cut, you can design the packaging with your logo accordingly
A: Yes, as a factory, we support OEM/ODM service. We can print your logo, company name, label, etc as your request. we focus on helping you build your brand and expand the market.
A: Different product has different MOQ. For OEM order, our MOQ is 1000 pcs, but we can accept a small quantity for the products if we have them in stock
Anwser: All of them! USB 3.1 is fully backwards-compatible with existing USB devices. All you need to do is adapt the physical connector. Adapters are available to convert attached USB cables to Type-C, and removable cables can simply be replaced with their Type-C equivalent.
Temperature is an often overlooked aspect of battery performance. However, it should be a major consideration when selecting a battery. Batteries do not charge or discharge well at low temperatures, and high temperatures are detrimental to shelf life (self-discharge—see below).
Most batteries perform best in the 20° to 60°C (68° to 140°F) range.
Lithium primary cells do better than most chemistries at both temperature extremes
Some lead acid batteries, such as Enersys Cyclon, can perform relatively well at -20°C (-4°F) or below
Special “high temp” NiCd, NiMh, and lithium cells are available that are designed to perform at higher temperatures
Anwser:Because the self-discharge rate of all battery and battery cell types increases with ambient temperature, it is best to store batteries in a cool, dry environment where temperatures do not exceed 25°C (77°F).
For best possible cell life, a lithium battery pack should ideally be stored with a SOC of roughly 50%.
Anwser:Cylindrical secondary batteries are typically enclosed in a steel tube that is 18mm in diameter and 65mm long. These are commonly referred to as 18650 cells.
Flat secondary cells are generally made from plastic or polymer materials, and can be manufactured in many different sizes. The dimensions of a flat cell are limited only by the imagination of the manufacturer.
Anwser:This nomenclature is used to define a battery pack’s configuration.
For example, 2S4P means 2 cells in Series, and 4 cells in Parallel. This particularly configuration would yield a 7.4V output with four times the capacity of a single cell.
Anwser:Yes. For safety reasons, all rechargeable lithium cells must include a protection circuit that prevents over-charging, over-discharging, and over-current (short circuit).
Over temperature protection is also a common feature.
Anwser:Currently, the only two battery chemistries that must be recycled by law are lead acid and NiCd. These batteries must be clearly marked with the “chasing arrows” symbol and a national 1-800 phone number that end users can use to locate their local recycling center.
Answer: Primary batteries are ordinary dry batteries and can only be used once. Secondary batteries are also called rechargeable batteries. Power batteries (or traction batteries) in secondary batteries are currently the main power source for electric vehicles.