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Square black and green polysilicon solar panel 70 by 70 millimetres, 2.8 millimetres thick

Unique-Bargains

Unique-Bargains 0.7W 5V Solar Panel 70x70mm Black Green

SKU CH-KYAD-HFX2W

Compact 0.7 W 5 V polysilicon panel measuring 70 mm square and weighing 18 g for low-power DIY charging projects

  • TypeSolar Panels
  • Compact 70 mm square fits tight project spaces
  • 7 W at 5 V powers small DIY devices
  • Weighs only 18 g for easy portable use
  • 8 mm thin profile suits low-clearance mounts
  • Polysilicon cells maintain output in weak sunlight

0.7W 5V Polycrystalline Solar Module

This compact panel delivers 0.7W at 5V from a 70 x 70mm polycrystalline cell. Weighing 18g and measuring 2.8mm thick, it suits DIY builders adding solar power to toys, science kits or low-draw chargers. The rugged casing resists moisture and deformation across temperature swings. It is a ready-to-wire block for hobby-scale energy harvesting.

Replaces disposable batteries in micro-projects

Swapping coin cells or alkaline packs for this panel removes recurring cost and waste in devices that draw only milliamps. The upgrade pays off when the load runs daily in ambient light — garden sensors, LED markers or small water pumps — because the panel tops up a buffer capacitor or tiny Li-ion cell without user intervention. It cannot sustain loads above its rated output, so motors or bright lamps stay off-limits.

0.7W headroom for milliamp circuits

In direct sun the module comfortably powers a microcontroller, a low-current sensor and a periodic radio burst while trickle-charging a small storage cell. Under cloud cover or indoor light the current drops sharply, so continuous operation needs a battery reservoir. The 70mm footprint limits total energy capture, making it unsuitable for anything that requires more than a few hundred milliwatt-hours per day.

Highlights

  • Compact 70 mm square fits tight project spaces
  • 7 W at 5 V powers small DIY devices
  • Weighs only 18 g for easy portable use
  • 8 mm thin profile suits low-clearance mounts
  • Polysilicon cells maintain output in weak sunlight

Specifications

BrandUnique Bargains
TypeSolar Panels

Questions about this item

Will the 70 x 70 mm panel with 2.8 mm thickness fit inside my project enclosure?

The module measures 70 by 70 millimetres and is 2.8 millimetres thick, so check that your enclosure has at least that much flat area and depth.

How do I connect the panel to my circuit without damaging the 5 V output?

Solder leads directly to the two contact pads on the back, observing polarity, and avoid applying excessive heat that could lift the pads.

How often should I clean the polysilicon surface to keep the 0.7 W output stable?

Wipe the glass with a damp, lint-free cloth whenever dust or bird droppings are visible; no scheduled replacement is required.

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