We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • 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.

Highlights

  • 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

Specifications

BrandUnique Bargains
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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.