This board is more than just a simple solar charger.
It prioritizes flexibility/modularity over efficiency.
- 2.4-15V input from solar cells or other power sources
- Adjustable Maximum Power Point Control (MPPC)
- Undervoltage protection when the battery overdischarges
- Overdischarge current protection
- Overvoltage protection when the battery overcharges
- Overcharge current protection
- Battery temperature sensor
- Compliant with JEITA charge temperature specification
- Battery fuel gauge
- Battery capacity adjustment with aging/temperature
- Holder for a single AA sized Li-Ion or Li-Po battery
- Real Time Clock
- I2C level shifter
- ESP-01M WiFi module (optional)
- I2C programmable Buck Regulator 0.6-3.75V (1.8V default) Current Limit: 100-400mA
- I2C programmable Buck-Boost Regulator 1.8-5.5V (3.3V default) Current Limit: 100-800mA
- "Shipment Mode"
- Breadboard friendly design
- Multiple mounting options