User manual

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Function: If the USB plug is connected to the USB source, the orange LED lights
up. The rechargeable battery is charged with a consonant current of approx.
70–80 mA. As of a rechargeable battery voltage of approx. 1.7 V, the ashing LED
starts to ash, signalling that the rechargeable battery cell will soon be charged.
Additionally, the red LED lights up when the rechargeable battery is also being
charged with solar energy via the connected solar module – independently of
whether the rechargeable battery is charged via USB or not.
Fig. 064: Circuit diagram
This circuit setup can also be found in the coloured illustration on the learning
package cover.