Project Introduction

Power supply usually is a problem that occurs when you go camping or long period of outdoor activity. The time that this power bank was made, the common power bank volume you can find on the market has a maximum of  10000mAh. That is quite enough for daily uses but not for those who go camping every years. Hence, I made myself a giant power bank with solar charging system.

Explanation

During camping, there is no electric plug for charging your power bank. Hence, I need to find an alternative sources of power supply which Solar power come into my mind. We all know that Li-ion Battery will lose its stored capacity during unused period. And the solar panel on top was to reduce the energy lose by continuously charging the Battery just to refill its energy lost.

Specification

• 5V 1.2A Output x2
• 5V 1A Charging Controller x1
• 5V 150mA Solar Panel x1
• 3.7V 21000mAh Lithium Ion Battery
• Universal Charging Port x1
• 12V Charging Input Male Header (2.1mm)

Universal Charging Port (UCP) is a Standard USB Port that allow both Charging and Output of the Power Bank. If there is 12V Input to the Power bank via 2.1mm Power Jack, the UCP will output a 5V 3A (MAX) of power. If 5V 1A was applied to the UCP, the Power Bank will start charging itself.