Analysis of information sources in references of the Wikipedia article "Charge controller" in English language version.
Charge Controller: equipment that controls dc voltage or dc current, or both, and that is used to charge a battery or other energy storage device.
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: CS1 maint: location (link)Maximum Input Voltage: 22 V
voltage between 3.2V and 20V at 200mV increments
Both Class A and Class B adapters are rated at 5, 9 and 12 volts. Class B adapters go one step further, up to 20 volts.
Maximum Input Voltage: 22 V