If it is a sample, it is usually transported by express or air. If the delivery location is domestic, it can be transported by road. If it is a large-volume order and the destination is abroad, it can be transported by sea.

The thickness of ultra-thin batteries is generally 0.4mm-1.9mm, the thickness of conventional batteries is generally 3.0mm-10mm, and the thickness of industrial batteries is generally around 14mm.

Common shapes include square and cylindrical. Of course, our batteries are soft, so you can also customize various shapes, such as curved, L-shaped, U-shaped, ultra-thin sheets, etc.

Generally, small electronic devices are compatible with JST connectors, and high-current equipment used in industry is generally compatible with Molex connectors.

The battery capacity of micro devices and wearable devices is generally 20mAh~500mAh. The battery capacity of portable devices and electronic consumer products is generally 1000mAh~1500mAh. The capacity of batteries on high-power devices and industrial equipment is generally 4000mAh~10000mAh.

The voltage under normal conditions is 3.7V, the maximum charging voltage is 4.2V, and the discharge cut-off voltage is 3.0V. The voltage range for safe use is 3.0V-4.2V, and the voltage range for optimal performance is 3.5V~4.2V.

The 3.7V lithium polymer battery mainly monitors the voltage and current in real time through the main control chip, judges the voltage/current state through the comparator, and triggers the MOS tube connected in series in the battery circuit to cut off the current.

First, you need to store the battery in an environment of -20℃~60℃ and humidity ≤65%, avoiding high and low temperatures, as well as high humidity. At the same time, you need to keep the battery away from fire, and avoid puncture and extrusion that may cause battery damage. You need to use a dedicated charger to charge the battery, so as to avoid overcharging the battery and causing internal pressure to rise. In addition, you only need to check the battery regularly and check the voltage every 3 months to ensure that it is not less than 3.0V.

The actual charging of a 3.7V lithium polymer battery depends mainly on the battery capacity and charging current. Small-capacity batteries generally take 1~3 hours to fully charge, and 0.5~1 hour in fast charging mode. Medium-capacity batteries generally take 2~5 hours to fully charge, and 1~2 hours in fast charging mode. Large-capacity batteries generally take 4~6 hours to fully charge, and 1.5~3 hours in fast charging mode.

The continuous use time of a 3.7V lithium polymer battery mainly depends on the battery capacity and device power consumption. The 500mAh battery used in general Bluetooth headsets can be used continuously for 4-5 hours. The 4000mAh battery used in POS machines can be used continuously for 3.5~4 hours. The 8000mAh battery used in drones can be used continuously for 3~3.5 hours.

You can judge whether the battery is damaged by observing whether the appearance of the battery is bulging or deformed, whether the shell is damaged, and whether there is electrolyte leakage. If you can’t see it from the appearance, you can also see whether the battery life drops rapidly, whether there is a large difference between the marked power and the actual power, and whether the temperature rises abnormally during charging. If the above problems occur, it means that the battery is most likely broken.

The operating temperature of conventional models of batteries is between -20℃~60℃, and the operating temperature of low-temperature special models of batteries is between -40℃ ~ +60℃.

Generally, a 3.7V lithium polymer battery will only have a fire hazard if the temperature is too high, it is overcharged and over-discharged, it is punctured or squeezed to cause an internal short circuit, or the shell is damaged to cause electrolyte leakage. There is generally no fire hazard during normal use.

According to the material classification, there are lithium cobalt oxide batteries and ternary material batteries. According to the application characteristics, it can be divided into high-temperature batteries, low-temperature batteries, and high-rate batteries. According to the physical structure classification, it can be divided into ultra-thin batteries, special-shaped batteries, and soft-pack batteries. According to the capacity, it can be divided into small-capacity batteries, medium-capacity batteries, and large-capacity batteries.

A 3.7V lithium polymer battery is mainly composed of positive electrodes, negative electrodes, electrolytes, diaphragms, shells, protective circuit boards, temperature sensors, electrode leads, and other components.

Our 3.7V LiPo battery for IoT sensors  have passed CE, UN38.3, IEC62133, MSDS, CB, UL2054, UL1642, RoHS, and REACH certifications.