Welcome to MuWatt

MuWatt, Pronunciation: [mju:wɑt],means MicroWatt and the symbol is μw.

Our product is a miniature solar panel which is made of 12 photovoltaic cells in series on a substrate. The finished size is 20mm*32mm*12mm.

MuWatt is committed to pioneering indoor photovoltaics for battery-free power supply applications of ultra-low power MCUs for indoor applications with illumination levels below 100lux. Our indoor solar panels can be supplied with power supply voltages ranging from 3 to 5V, and are environmentally friendly, with ultra-small dimensions suitable for electronics industry SMT PCBA processes.

Get Started

MuWatt Mini Solar Pannel samples will be launching globally on Amazon.com within the next 14 days!

Power remote controls, kitchen timers & solar radios even under 100lux! , ideal for energy harvesting in microgrids. Engineered for low power MCUs, Bluetooth beacon, IOT node,& electronic shelf labels.

SMD device with gold-plated pads, RoHS compliant. compatible with lead-free reflow soldering processes; White cathode line markings on surface of mini solar panels , optimized for SMT pick-and-place machine vision alignment; Dimensions: 20mm x 32mm.Thickness 1.2mm only。

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MuWatt™ Mini Solar Panels

Output Power increases approximately in equal proportions with room illuminance

Available in a variety of sizes

The size of single module is 20mm*32mm, in order to get more power, it can be arranged and combined by 1*2, 2*2 to form 32*40mm, 40mm*64mm size.Thickness 1.2mm only

Energy Harvesting,Microgrids

Configuration of energy Harvesting IC and supercapacitor to form a battery-free power supply module.

Powering ultra-low power MCUs

Suitable for powering ARM Cortex-M0+ chips such as Dialog#DA14531,ST#STM32U0, ST#STM32L0, MICROCHIP#PIC24F ‘XLP’, Silicon Labs#EFM32 Gecko, TI#MSPM0C1104, Infineon# PSoC 4000T。

Powering low-power sensors

Typical battery-free sensor applications: Magnetic sensors，Temperature Sensor，Ambient Light Sensor，RGB Colour Sensor，PM2.5 Air Quality Sensor，Smoke Alarms

Powering IOT node

Compatible with various advanced communication protocols: Bluetooth, LoRa, Zigbee,Enocean, Sigfox,NFC.

Powering electronic labels/tags

Apple Airtag, MFi Tag, Google Find My Device, Apple ibeacon, Google Eddystone, Acitve RFID, Electronic Shelf Label(ESL).

Higher Voc in low light indoor

Open-circuit voltage parameters of mini solar panels at different illumination levels indoors.

  • Voc,Greater than 3V at 200lux illuminance.
  • Voc,Greater than 3.3V at 600lux illuminance.
  • Under higher illumination conditions, the open-circuit voltage can reach 5V, which can be used directly with LDO devices instead of expensive energy harvesting IC.
Indoor solar power Open Circuit Voltage/Illuminance Curves

More bright, More Power

IV curves for several indoor illumination conditions.

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Multi-scenario indoor light into electricity

Office, Residential, Supermarket, Warehouse, Hospital, School, Factory

Precision cutting technology

Advanced process ensures reduced thermal effects during cutting and improved edge composite effects on solar cell wafers.Improvement of Voc parameters of mini photovoltaic panels in a soft light indoor environment.

Unique SMD process

Innovative multi-cell solar cell placement process that improves the alignment of 12 cells and dramatically reduces the time required for the placement process, resulting in cost advantages.

Multi-layer film laminate packages

Preferred EVA, ETFE materials combined with advanced laminated packaging technology to improve the high and low temperature performance, yellowing resistance and environmental weatherability of small PV modules.

FT Finished Product Testing

Specialized testing equipment to test the maximum output voltage parameters of the material under different illumination levels to ensure that the finshed product meets the power output under the corresponding illumination level.