Item NO.: K2 Out voltage at auto start end 12V output voltage :19V.16V.12V capacity:44.4WH size:155*70*35mm USB output: 5V 2.1A charge mode: CC/CV 15V1A start current: 200A peak current: 400A (3S) cycle life: 1,000 times operation temperature: -20℃-60℃