User manual

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18. Combination Chargers, Charging and
Maintenance of Charge
Test setup: Solar module, plug board, USB cable, ashing LED, red LED, orange
LED, diode 1N 4001, resistor 1.5 Ω, resistor 1.2 Ω, 2 resistors 1 k, transistor
2N3904, battery holder, NiZn-rechargeable battery
The self-discharge differs according to rechargeable battery type. If the rechar-
geable battery has been fully charged, then put in interim storage and is urgently
needed, it is annoying to have to charge it again rst.
Subsequently, a combination of a USB mains charger for quick charging of the
rechargeable battery cell and a solar module (with free current) for gentle charging
or alternatively solar permanently charging is explained.
a)