Features:
[Voltage Converter Kit] Inverter (plays the role of converting the 12V DC power of the battery to 220V or 110V AC power)+solar panel (receives the solar energy to charge the battery)+solar controller (controls the charging and discharging of the battery).
[LED Battery Display] Battery Level Bar for LED Display shows the battery Capacity, which can remind you that when your battery no power. When connect the battery with inverter, this LED Screen work and show the real-time capacity of battery. It has 5 level (lattice) of the Battery Level Bar, and each lattice represents 20% of the battery power. When your battery is no power, the display will flash to remind you that you need to charge your battery.
[Fast Charging Dual USB ports] International universal safety AC socket, Inverter can be applied to various household appliances, lighting power, IT electronics, office equipment, power tools, vehicle electrical appliances, outdoor emergency power supply, etc. 
[Multi Protection] Built-in fuses, safe charging design and cooling fan prevents the car power converter from over-heat, saving power and energy. Over voltage, overload, over-current, short-circuiting, under-voltage, overheating, short circuit protection.
[Lightweight design &Top Quality] Lightweight and compact, ideal for vacations, camping and work trips. It can be plugged into almost any 12V power output vehicle, providing charging opportunities anywhere.
Specification:
Power Inverter
Power: 300W, 500W (Optional)
Peak Power: 600W (300W), 1000W (500W)
Input voltage: 12V
Input voltage range: 9.5V-15.5V
Output voltage: 110V / 220V
Output voltage range: 110V±10% / 220V±10%
Frequency: 50Hz for 220V model /60Hz for 110V model
Inverter efficiency: 90%
Circuit topology: pushing
No-load current: ≤0.7A
Low voltage protection: Yes, the minimum protection voltage is 9.5V
High voltage protection: Yes, the highest protection voltage is 15.5V
Overload protection: Yes
Output short circuit protection: yes
Output voltage regulation: yes
Protection buzzer: no
USB interface: 2.1A*2
Input wiring method: terminal
Output interface: international general socket
Chassis color: blue + black
Product size: 203*110*56mm
Product Weight: 500g (300W), 700g (500W)
Type: 18W 5V 12V multifunctional solar charging board 
Rated power: 18W ± 5% 
DC voltage: 12V 
DC current: 1.5A 
USB voltage: 5V 
USB current: 1.7A 
Dimensions: 420* 28 * 0.25cm 
Net weight: 0.55KG 
30A Solar controller 
Product name: Digital tube solar controller 
Current: 30A 
Voltage: DC 12V / 24V intelligent conversion 
Display: digital tube