18650 Li-ion Battery Solar Charging Module 4.2V 3.6V Charge Protection Board
ab 1,19 €
Nano Sheild. MINI USB female chassis and the + - pads next to the power input, access to 5V. (When the L2 light is on, L1 flashing fast indicates that the saturation state). OLED LED&RGB. Chip in the work of about 60 degrees heat is normal.
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