Description
Power your Lemon IoT system with this battery board which features a li-ion battery solar charger with battery protection!
Features
- Li-Ion battery solar charger
- Li-ion battery connection via JST connector. Compatible with Adafruit batteries: https://www.adafruit.com/category/889
- Efficient buck-boost convertor to get all the energy out of the battery (down to 2.8V)!
- Access to all GPIO pins for full customisation.
- Stackable construction.
- Interfaces: UART expansion header
- Output voltage: 3.3V 800mA buck and 250mA in boost mode.
Kit contains
- 1x Lemon IoT battery board
- 2x pin strip headers AND 2x stackable header to be soldered by end user as desired.
Technical specification
- Li-Ion battery protection using a TI BQ29702 IC; OVP 4.35V and UVP 2.80V.
- Li-Ion solar charger based on TI BQ24210. Default charge current is 330mA but can be modified (R6) – requires soldering an 0603-sized resistor.
- Solar panel voltage set to 5.5 – 6V (can be modified – requires soldering).
- Solar panel connection via Molex 2-pin connector (supplied unsoldered).
- Buck-boost DC-DC convertor (TI TPS63031) to get the most out of the battery!
- Output voltage is 3.3V and current tested at 800mA in buck mode or 250mA in boost mode.
- Output voltage is available on two pins.
Downloads
Additional Information
| Weight | 0.25 kg |
|---|---|
| Dimensions | 10 × 15 × 4 cm |
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