Solar Power System - 6v 4.5ah Lead-acid Battery | 30 Hours Lighting Time, Usb Charging Capability, High Brightness Bulbs 130lm

Our firm is leading name in anufacturing of Solar Power System to our consumers with the following details:
Operation Description
Please make the battery fully charged before using it for the first time.
Quantity of bulbs
Lighting time when fully charged
1 PC 30 hours
2 PCs 15 hours
The system choose high bright bulbs with 130LM above, equal to 25W incandescent lamp.
Battery capacity indicator:
3 indicator lights being on: 50~100%
2 indicator lights being on: 20~50%
1 indicator light being on: <20%
Mobile phone charge
Operation steps :
Plug the USB into the port which marked
2.Connect the mobile phone through the connector.
3. Also can charge MP3, MP4, Digital Camera, etc
Specification
Size of Controlling Box 126*57*185mm 0.94kg
Solar Panel 5W/9V Vmp: 8.7V; lmp:0.57A; Voc:10.8V; Isc0.61A Dimension 220*185*18mm
Weight:0.52kg
Panel Cable 3M Length
Battery 6V/4.5AH Lead-acid
Bulbs 1.3W 130LM 0.12kg*2
Color Temperature of Bulbs 6000-6500K
Bulb Cable 3M Length With Switch
USB Output 5V/500ma
Color Box Size 230*85*190mm 0.12kg
Net Weight of System 1.70kg
Gross Weight of System 1.82kg
Carton Size 480*280*410mm (12PCs)
Net weight 20.40kg
Gross Weight 21.84kg
Battery maintenance and using skill
The solar power system uses a 6V 4.5Ah lead-acid Maintenance- Free rechargeable battery
In order to keep the longest lifespan.
Please charge the battery at least one time every 3 months, even you dona t use it .