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Five small square black and green polysilicon solar panels with wires attached

Unique-Bargains

Unique-Bargains 5Pcs 0.25W 5V Poly Solar Panel

SKU CH-803G-EMYAP

Five compact 5 V polysilicon panels each deliver 0.25 W for DIY chargers, toys and low-power projects

  • Product typeSolar Panels
  • Ready-to-use 5 V power for micro-projects
  • 25 W output keeps small devices running
  • Polysilicon cells perform in weak sunlight
  • Compact 50 × 50 mm panels fit tight spaces
  • Five panels weigh only 39 g total

Five-piece polysilicon solar kit

This pack contains five identical 5 V panels, each rated at 0.25 W and measuring 50 mm square by 2.4 mm thick. They are sold new and arrive ready for soldering or plug-in connections in low-power projects.

Hobbyists and educators needing a handful of cells

The set suits anyone building solar toys, science-fair demonstrators, tiny chargers or micro irrigation pumps where a few hundred milliwatts at 5 V is sufficient. Buyers who need more voltage, higher wattage or a weather-sealed junction box should look elsewhere.

0.25 W per panel at 5 V

That single figure defines whether the array can drive your load; if the target device draws more current than one or two panels can supply in the available light, the kit will not work.

How it compares

Measured against everything we stock in Solar Panels, Kits & Cables, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 101 comparable items (median $49.99).

Specifications

Product
Brand nameUnique Bargains
Product typeSolar Panels

Questions about this item

What type of charge controller or regulator is needed to safely connect these 0.25W 5V panels to a battery?

Use a 5V-compatible charge controller rated for at least 0.25W per panel; a small PWM or linear regulator designed for 5V solar input will prevent overcharge.

Can these 50mm polysilicon panels be wired in parallel with older 5V solar modules to increase current?

Yes, panels with the same 5V rating can be paralleled; match voltage closely and add blocking diodes if the older modules lack them to stop reverse current at night.

How can I verify each 0.25W panel is producing its rated output after wiring?

Measure open-circuit voltage in full sun — it should read near 5V — then check short-circuit current; a reading around 50mA confirms the 0.25W rating.

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