Golden PVC.
Gold PVC heat shrink sleeve for 18650 lithium battery. The rated capacity of 18650 series battery is 2200mah to 3200mah, so gold PVC heat shrink sleeve is required .
The 18650 series battery has good safety: it has passed heavy hammer, UL1642, GBT31241, GBT31485. Long life: Ambient temperature is about 0.5C/0.5C. Capacity retention rate after 500 cycles is >60%. 18650 lithium batteries are used in groups. Every lithium battery requires protection against charging overvoltage, discharging undervoltage, overcurrent and short circuit. During the charging process, the balanced charge of the entire battery bank must be obtained. Lithium battery refers to the connection of lithium batteries in series or parallel to meet needs.