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Rectangular blue monocrystalline panel 165 by 135 mm with silver busbars and junction box

crystalsolar

crystalsolar SW3506 3.5W 6V solar panel 165x135mm

SKU CH-S848-BFBSJ MPN SW3506

A 3.5 W monocrystalline panel delivers 6 V at 0.58 A with 19 % conversion in a 165 × 135 mm frame

  • Product typeSolar Panel
  • 19% conversion rate maximises energy harvest from limited surface
  • 5 W output at 6 V powers small DC devices directly
  • Monocrystalline silicon cells maintain usable current in weak light
  • 165 × 135 × 3 mm footprint fits tight project enclosures
  • 80 g weight adds minimal load to portable or drone builds

Compact solar panel for DIY projects

The crystalsolar SW3506 is a 3.5W monocrystalline silicon module built for hobbyists assembling small off-grid systems. It suits DIY home lighting, solar-powered toys or a low-voltage water pump where a lightweight 165x135mm footprint is convenient. Buyers needing higher wattage for household appliances or grid-tie installations should look elsewhere.

Steady 6V output in real conditions

Rated at 6V and 0.58A, the panel delivers a maximum conversion rate of 19% under standard illumination. Output scales with available light, so sustained current drops under clouds or shading rather than holding the peak figure. The 580mAh working current rating reflects typical bright-day performance, not a guaranteed minimum.

Thin frameless laminate for flexible mounting

At 3mm thick and 0.080 kg, the bare cell laminate can be bonded to curved surfaces or fitted into custom enclosures without bulky brackets. No pre-drilled holes or cables are included, so the builder chooses wire gauge and termination to match the load. The exposed edges require careful handling to avoid cell cracking during installation.

How it compares

Measured against everything we stock in Solar-Powered Chargers & Devices, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 92% of the 874 comparable items (median $25.99).

Specifications

Product
Product typeSolar Panel

Questions about this item

How hot does the 3.5 W panel get when it sits in full sun all day?

The panel is rated at 19 % max conversion rate, so most of the incoming energy leaves as electricity rather than heat; the 3 mm thick monocrystalline silicon laminate stays close to ambient temperature in normal operation.

What do I need to connect the panel's 6 V 0.58 A output to my project?

The panel provides bare 6 V 0.58 A leads, so you must supply a charge controller, voltage regulator or direct-load device that accepts that voltage and current.

Will the 165 mm by 135 mm panel fit beside the 50 mm cooling fan I already use in my enclosure?

At 165 mm long, 135 mm wide and only 3 mm thick, the panel adds minimal footprint and can mount flat next to a 50 mm fan without blocking airflow.

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