Weltool UB18-26 is equipped with a steel shell circuit compartment on the positive electrode of the battery, with a protection circuit inside, and a USB-C, you can use the 5V adapter to charge the battery directly, or you can put the battery into the charger to charge. There is a charging indicator light on the battery to indicate the charging status.

Specifications:

• Model: UB18-26
• Capacity: 2600mAh
• Cell internal resistance: ≤50mΩ
• Voltage: 3.6V
• Continuous discharge current: 5A (10-25℃)
• Charging current: 1.5A (Type-C USB interface charging current)
• Overcharge protection voltage: 4.2±0.05V
• Over-discharge protection voltage: 2.5±0.1V
• Charging indicator light: red light (charging), blue light (charging completed)
• Charging temperature: +0~+45℃
• Discharge temperature: -20~+60℃
• Storage temperature: -5~+30℃ (less than 3 months)
• Dimensions: 
  • Length - 71±0.2 mm
  • Diameter - 18.4±0.2 mm
• Weight: 48.5±0.5g