The COBRA2 loggers can be charged from a direct current power supply that comply to the specifications given in the following table.
|Before Dec 2016||
12.5 to 32 V DC
|After Dec 2016||
11.2 to 25 V DC
The following are examples of sources that would ensure reliable charging:
Batteries can be connected in series to achieve the required voltage.
Note: The logger does not provide any protection for the external source. As example, it would not prevent batteries from being over-discharged.