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3.5 Watt Solar Charger Kit

$69.00
(4) Write a Review
SKU:
P103-K

How it Works USB Chargers

Compact and lightweight, this 3.5 Watt solar panel and 4,000mAh battery provides high performance charging to keep your devices powered up anywhere.
  • 4,000mAh USB Battery Pack
  • 4x Corner Mounts Included
  • Panel: IPX7 Waterproof, UV- and Scratch-Resistant
  • Battery: Always-On Feature
ITEM: P103-K
 
Size and Weight
  • Solar Panels: 21 x 11.3 x 0.5 cm
  • Battery: 10.2 x 6.35 x 0.16 cm
  • Total Weight: 300 grams
Solar Panel Output
  • Monocrystalline cells - 19% efficient
  • Open Circuit Voltage: 7.7V
  • Peak Voltage: 6.5V
  • Peak Current: 550mA
  • Peak Current: 3.5 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: 22cm long
  • Extend the cable length using 1 foot, 4 foot, and 10 foot extension cables
V25 USB Battery
  • Capacity: 6,400mAh, 25 Watt Hours
  • Dual USB Output: 5V/2A 3A Max
  • MicroUSB Input: 5-6V/2A
  • USB-C Input: 5V/2A
  • Battery Type: Li-Ion
  • Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature
  • Safe for air travel (Carry-on Luggage Only)
Includes:
  • 3.5 Watt Solar Panel
  • V25 USB Battery Pack
  • USB - MicroUSB Charging Cable
  • 4x Solar Panel Corner Mounts
 
  • 3.5 Watt Solar Charger Kit Silver
  • 3.5 Watt Solar Charger Kit
  • Small Solar Panel Back

How it Works USB Chargers

Compact and lightweight, this 3.5 Watt solar panel and 4,000mAh battery provides high performance charging to keep your devices powered up anywhere.
  • 4,000mAh USB Battery Pack
  • 4x Corner Mounts Included
  • Panel: IPX7 Waterproof, UV- and Scratch-Resistant
  • Battery: Always-On Feature
ITEM: P103-K
 
Size and Weight
  • Solar Panels: 21 x 11.3 x 0.5 cm
  • Battery: 10.2 x 6.35 x 0.16 cm
  • Total Weight: 300 grams
Solar Panel Output
  • Monocrystalline cells - 19% efficient
  • Open Circuit Voltage: 7.7V
  • Peak Voltage: 6.5V
  • Peak Current: 550mA
  • Peak Current: 3.5 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: 22cm long
  • Extend the cable length using 1 foot, 4 foot, and 10 foot extension cables
V25 USB Battery
  • Capacity: 6,400mAh, 25 Watt Hours
  • Dual USB Output: 5V/2A 3A Max
  • MicroUSB Input: 5-6V/2A
  • USB-C Input: 5V/2A
  • Battery Type: Li-Ion
  • Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature
  • Safe for air travel (Carry-on Luggage Only)
Includes:
  • 3.5 Watt Solar Panel
  • V25 USB Battery Pack
  • USB - MicroUSB Charging Cable
  • 4x Solar Panel Corner Mounts
 

How it Works USB Chargers

Compact and lightweight, this 3.5 Watt solar panel and 4,000mAh battery provides high performance charging to keep your devices powered up anywhere.
  • 4,000mAh USB Battery Pack
  • 4x Corner Mounts Included
  • Panel: IPX7 Waterproof, UV- and Scratch-Resistant
  • Battery: Always-On Feature
ITEM: P103-K
 
Size and Weight
  • Solar Panels: 21 x 11.3 x 0.5 cm
  • Battery: 10.2 x 6.35 x 0.16 cm
  • Total Weight: 300 grams
Solar Panel Output
  • Monocrystalline cells - 19% efficient
  • Open Circuit Voltage: 7.7V
  • Peak Voltage: 6.5V
  • Peak Current: 550mA
  • Peak Current: 3.5 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: 22cm long
  • Extend the cable length using 1 foot, 4 foot, and 10 foot extension cables
V25 USB Battery
  • Capacity: 6,400mAh, 25 Watt Hours
  • Dual USB Output: 5V/2A 3A Max
  • MicroUSB Input: 5-6V/2A
  • USB-C Input: 5V/2A
  • Battery Type: Li-Ion
  • Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature
  • Safe for air travel (Carry-on Luggage Only)
Includes:
  • 3.5 Watt Solar Panel
  • V25 USB Battery Pack
  • USB - MicroUSB Charging Cable
  • 4x Solar Panel Corner Mounts
 

How it Works USB Chargers

Compact and lightweight, this 3.5 Watt solar panel and 4,000mAh battery provides high performance charging to keep your devices powered up anywhere.
  • 4,000mAh USB Battery Pack
  • 4x Corner Mounts Included
  • Panel: IPX7 Waterproof, UV- and Scratch-Resistant
  • Battery: Always-On Feature
ITEM: P103-K
 
Size and Weight
  • Solar Panels: 21 x 11.3 x 0.5 cm
  • Battery: 10.2 x 6.35 x 0.16 cm
  • Total Weight: 300 grams
Solar Panel Output
  • Monocrystalline cells - 19% efficient
  • Open Circuit Voltage: 7.7V
  • Peak Voltage: 6.5V
  • Peak Current: 550mA
  • Peak Current: 3.5 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: 22cm long
  • Extend the cable length using 1 foot, 4 foot, and 10 foot extension cables
V25 USB Battery
  • Capacity: 6,400mAh, 25 Watt Hours
  • Dual USB Output: 5V/2A 3A Max
  • MicroUSB Input: 5-6V/2A
  • USB-C Input: 5V/2A
  • Battery Type: Li-Ion
  • Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature
  • Safe for air travel (Carry-on Luggage Only)
Includes:
  • 3.5 Watt Solar Panel
  • V25 USB Battery Pack
  • USB - MicroUSB Charging Cable
  • 4x Solar Panel Corner Mounts
 

Device Charge Times

Device V25 Battery Smartphones DSLR Cameras 7” Tablets
Number of Charges from Battery - 1.8 1.6 1.0
Hours to Charge from Solar Panel* 8.0 5.8 8.4 11.0

*Based on good solar charging conditions.

Compatibility

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

Tablets:
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 such as a Microsoft Surface.

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

Microcontrollers:
Compatible with USB powered microcontrollers including Arduino, Raspberry Pi and more.

4 Reviews

  • 5
    3.5 Watt Solar Charger Kit

    Posted by Lachlan Thompson on Mar 30, 2021

    Brilliant unit. I use this to power my honey bee counter on my research bee hive. I will be fitting more of these one per hive to instrument the rest of my hives. The always on feature is excellent Five stars.

  • 5
    Awesome

    Posted by Eric on Jun 22, 2017

    This panel really hits the sweet spot between the huge, impractical fold-out panels and the little wallet-sized panels that will hardly keep a flip-phone charged. This panel kept mine and my wife's phone charged through 8 days of backpacking, including heavy use for navigation and audiobooks. 3-4 hours in the sun was enough to fill a smartphone battery (Galaxy S5) completely.

  • 2
    So So

    Posted by Dave on Jun 5, 2017

    Get a bigger panel for this battery. Battery works well. Combo with this 3.5 Watt panel is lacking. Takes forever to charge. Wish I would have gotten a bigger panel.

    Response: Hi Dave - send us a note to support@voltaicsystems.com and we can try and find a used 6 Watt panel to help fix this problem.

  • 5
    Compact and easy to use

    Posted by Phil on Aug 22, 2016

    I take this 3.5 watt charger with me when I go to Mongolia. Since many of the places my wife and I visit in Mongolia are very remote, one can't rely on having any source of electricity to charge batteries with. The 3.5 watt charger will charge my cellphone, double AA batteries and my wife's point and shoot camera battery with no problem at all. Small enough that it will fit on the dashboard of a car while traveling from one place to another so it can be charged while driving. I use the charger at home as well since it is very convenient. Don't be caught without one!