K28
- Battery Size: 18650 (Flat top)
- Typical Capacity: 2800mA
- Continuous Discharge Rate (CDR): 20A
- Max Pulse Discharge Current: 35A
- Nominal Voltage: 3.6V – 3.7V
- Internal Resistance: ~12mΩ
K25
- Battery Size: 18650 (Flat top, unprotected)
- Typical Capacity: 2500mAh
- Continuous Discharge Rate (CDR): 20A
- Max Pulse Discharge Current: 35A
- Nominal Voltage: 3.6V – 3.7V
- Internal Resistance: ~15mΩ




