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1.  Solar Panel (mono or multi-crystalline): 1.8Watts
2.  USB charging cable: 5V 500mA
3.  Li-ion rechargeable Battery: 3.7V 1000mAh (optional power max to 2000mAh/3000mAh)
4.  Output volt/current: 5V 500mA
5. Charging times:
a)Mobile phone:2.5V-3 hours
b)Lithium battery (under full sunlight conditions):3 hours c)Lithium battery :3-4 hours (via USB charging cable)
we can make bigger battery size max to 3000mAh