| CPC H02J 9/06 (2013.01) [G06F 1/30 (2013.01)] | 20 Claims |

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1. A surveillance unit, comprising:
a first battery and a second battery;
a number of electronic devices; and
circuitry including:
power reset logic configured to, in response to a first event, reset at least one electronic device of the number of electronic devices;
a power path controller coupled to the power reset logic and configured to, in response to a second event, switch power to one or more of the number of electronic devices from the first battery to the second battery; and
a charge controller coupled to the power path controller and configured to supply a current to the second battery at one of a number of selectable levels.
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