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Description
USB - DC - Solar Lithium Ion-Polymer charger - v2NOTE: This product is only designed for use with solar panels sold at the Adafruit store. We cannot guarantee this will work with solar panels purchased elsewhere. Please purchase this kit and panels from Adafruit to ensure optimized functionality! A 2. 1mm adapter is also required to adapt a solar panel to the DC power jack. Make your projects to go green this summer with our specialized USB Solar Lithium Ion Polymer Battery charger! This charger is
NOTE: This product is only designed for use with solar panels sold at the Adafruit store. We cannot guarantee this will work with solar panels purchased elsewhere. Please purchase this kit and panels from Adafruit to ensure optimized functionality! A 2.1mm adapter is also required to adapt a solar panel to the DC power jack.
Make your projects to go green this summer with our specialized USB/Solar Lithium Ion Polymer Battery charger! This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers. We've spent over a year testing and tinkering with this charger to come up with a plug and play solution to charging batteries with the sun and we're really pleased with what we ended up with.
Easy to use! Pick up any of our many 3.7V/4.2V LiIon batteries, and a 6V solar panel. Plug the battery into the BATT port using a 2-pin JST cable and the solar panel into the DC jack using a 2.1mm terminal block adapter. Put the solar panel outside (and keep the battery out of the sun, it needs to be kept cool!) to start charging. You can power another project like a Mintyboost at the same time by connecting to the LOAD output port
Our carefully designed charger is designed specifically for solar charging, and will automatically draw the most current possible from the panel in any light condition!
Even thought it isn't a 'true' MPPT (max power point tracker), it has near-identical performance without the additional cost of a buck-converter. Our detailed tutorial on how to use this charger includes a design document explaining how it all works.
For use with Adafruit Lipoly/LiIon batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.
Comes with an assembled charger board, a 2-pin JST cable that will fit into either the BATT or LOAD ports, and a large stabilization capacitor that must be installed in your finished project. Does not come with a Lipoly battery or solar panel but we do have tons available in the shop that work quite well. We have updated the design to be a little more compact, have nicer mounting holes, and a 2.1mm DC jack
Features
- 3.7V/4.2V Lithium Ion or Lithium Polymer battery charger
- Charge with 5-6V DC, USB or 6V solar panel!
- Too dark out? Use a USB mini-B cable or a 5V DC adapter
- Automatic charging current tracking for high efficiency use of any wattage solar panel
- Use any 6V solar panel
- Three color indicator LEDs - Power good, Charging and Done
- Low Battery Indicator (fixed at 3.1V) with LED output
- Set for 500mA max charge rate, can be adjusted from 50mA up to 1A by soldering in a resistor
- Will always draw the most current possible from a solar cell - up to the max charge rate!
- Smart load sharing automatically uses the input power when available, to keep battery from constantly charging/discharging
- Temperature monitoring of battery by soldering in a 10K NTC thermistor (not included) - suggested for outdoor projects where the battery may get hot (50°C) or cold (0°C).
- Board Dimensions: 41mm x 33mm x 2mm (1.6" x 1.3" x 0.08")
- Thickness with 2.1mm SMT Barrel Jack: 12.6mm / 0.5"
Documents
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Poncho of Happiness
This was everything I hoped it would be. So comfy and warm. I like that there are a couple snap buttons to hold it together. I’m 5”11 and it goes down to my knees so I was pleasantly surprised with that. And I love the pockets! Quality wasn’t ruined after being washed either.
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Reviewed in the United States on October 25, 2025
★★★★★ 5
Luxury at its finest. Must have. You will not be disappointed!
Size: Twin(60" x 80"), Color: Tie-dye Coffee
This blanket is a must have! I purchased several to compare and decide which one was going to make the cut. There was absolutely no competition. This is the softest, most luxurious, coziest and authentic looking blanket. I told my sweetheart THIS is the cozy time blanket! Luxury at its finest! I have real vintage for jackets that are extremely luxurious and this rivals them with a clear conscience!Absolutely stunning and extremely high class feeling and appearing. Also semi-heavy and very warm . Upgrade to any space
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Great blanket
Size: Twin(60" x 80"), Color: Tie-dye Coffee
Luxurious look. It’s a soft faux fur on the top, with a beautiful and subtle variegated pattern that adds to the lifelike appearance. The inside of the blanket has a velvet feel and creates a cozy vibe. The blanket is a great size. It is well made with quality material with just the right amount of weight to help me relax and fall asleep.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Love it so much I got a second one
Size: Throw(51" x 63"), Color: Navy Blue, Size: Throw(51" x 63"), Color: Navy Blue
This blanket is perfect for snuggling. The throw size is perfect for napping or relaxing. It’s unbelievably soft. Faux rabbit fur is how I’d describe it. The color is perfect and consistent. It’s got great weight to it. It definitely has the power of nap inducement. My kids keep trying to steal it when they watch movies with me so I got a second because I’m not sharing! I’d get it in king size if they made it that big. Quality is amazing. It’s basically double layered with the top being the fluffy, bubble side and the other is a smooth yet still soft underside. It’s worth every penny and if you see it on a deal - DO NOT WAIT! Pull it out of the box and prepare to luxuriate beneath this deliciously soft and warm blanket. You DO need it!
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Perfect For Conan's Throne!
Size: Twin(60" x 80"), Color: Tie-dye Coffee, Size: Twin(60" x 80"), Color: Tie-dye Coffee
This is a nice, thick faux fur blanket. I drape it over my recliner. Now I have a throne fit for Conan the Barbarian. Washed well. Feels soft and warm. This blanket could be used as a throne cover or a bedspread. Beautiful!
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Reviewed in the United States on April 1, 2026