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3.5 Watt Solar Charger Kit

At 3.5 Watts, this waterproof, lightweight panel and 4,000mAh battery provides great charging performance and will help keep your devices charged up anywhere. Slide the panel in your bag or mount it nearly anywhere for a minimal, tough charging solution.


  • smartphone charges from Voltaic battery
  • hours in the sun to charge smartphone
  • hours of smartphone usage from 1 hour in the sun

How it Works USB Chargers

USB Battery - whats included

3.5 Watt Solar Panel, Panel to Battery Adapter +

  1. V15 Laptop Battery
  2. USB to MicroUSB Charging Cable - charges V15 battery from any USB port or charges devices with MicroUSB input


Size and Weight
  • Solar Panels: 8.3 x 4.4 x 0.2 in (21 x 11.3 x 0.5cm), Battery: 4 x 2.5 x 0.5 in (10.2 x 6.35 x 0.16 cm)
  • 0.6 pounds (276g) including battery and solar panel
Solar Panel Output
  • Monocrystalline cells - 19% efficient
  • Open Circuit Voltage: 7.0V
  • Peak Voltage: 6.0V
  • Peak Current: 0.61A
  • Peak Current: 3.69 Watts
Solar Panel Construction
  • Urethane coating
  • 3mm Aluminum/Plastic composite substrate
Panel Mounting and Cables
  • 4 screws on back corners of panel allow multiple mounting options
  • Output cable is 8.5 inches, 22cm long and connects to V15 battery via included adapter
V15 USB Battery
  • Capacity: 4,000mAh, 15 Watt Hours
  • Output: 5V/1A USB
  • Input: 5-6V, 1A
  • Battery Type: Li-Polymer
  • Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature
V15 USB battery - whats included

Battery Functions:

  1. Power Button
  2. Charge Indicator
  3. USB Output to Charge Devices
  4. USB Input to Charge Battery

Charges all USB Devices including all Apple, Android and Blackberry smartphones.

Charges all tablets that are powered by USB including Apple iPads and Samsung Tablets. Will not charge tablets that charge at 12 or 16 Volts.

Digital Cameras:
Charges both DSLRs and cameras that charge from USB. For DSLRs, optional camera charger cradle that matches your camera battery is required.