Product Feature Product type: Grade a lithium ion polymer battery Input current: 1A 5V Output current: 1.8A 5V Operating temperature: 0 degrees -45 Electric core capacity: 4000mAh Storage / transportation temperature: -20 C + + 50 Cycle life: 500 times Charging time: ~4 hours Product size: L168.4*W83.6*H18 (mm)
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