Solar Panel Charging Adafruit

3 7v 4 2v lithium ion or lithium polymer battery charger.

Solar panel charging adafruit.

They use a high efficiency monocrystalline cell. Once you ve done that you can simply plug in the solar panel into the dc jack look for the pwr good led to indicate that the solar panel is providing power and then plug the battery into the batt slot in the left. Combine a properly sized solar panel with the adafruit usb dc solar lithium ion polymer charger and a lithium ion battery and your project will stay powered with energy from the power of the sun. Using larger panels either higher voltage or current output could also damage the charger.

Three color indicator leds power good charging and done. Set for 500ma max charge rate can be adjusted from 50ma up to 1a by soldering in a resistor. Use only 3 7v 4 2v lithium ion polymer batteries. Do not connect the panel directly to the dc in pins as it bypasses the onboard diode which would allow the solar panel to drain the batteries in low light conditions.

We cannot guarantee this will work with solar panels purchased elsewhere. Use any 6v solar panel. These are waterproof scratch resistant and uv resistant. The positive lead on the adapter cable is labelled in white.

To connect the panel to the adafruit solar charge controller a barrel jack adapter is needed. The adafruit universal usb dc solar lithium ion polymer charger can use usb dc or solar power with a wide 5 10v input voltage range. Automatic charging current tracking for high efficiency use of any wattage solar panel. You can power another project like a mintyboost at the same time by connecting to the load output port.

Low battery indicator fixed at 3 1v with led output. Charge with 5 6v dc usb or 6v solar panel. Put the solar panel outside and keep the battery out of the sun it needs to be kept shaded to start charging. Stick the fuzzy side to your bag neatly and aligned with the size of your solar panel then mate the scratchy hook side of the velcro to the fuzzy side peel off the adhesive back and gently press on your solar panel.

Learn everything you need to know to power your project with solar energy on the adafruit learning system. Solar charging is easy don t forget to prepare your solar panel and solder in the electrolytic capacitor beforehand. A 2 1mm adapter cable is also required to adapt a solar panel to the dc power jack. Plug the battery into the batt port using a 2 pin jst cable and the solar panel into the dc jack.

The charger chip is super smart and will reduce the current draw if the input voltage starts to dip under 4 5v making it a perfect near mppt solar charger that you can use with a wide range of panels. 200 these panels come to us from voltaic systems makers of fine solar powered bags and packs. Will always draw the most current possible from a solar cell up to the max charge rate.