| CPC H02J 7/345 (2013.01) [H01G 11/06 (2013.01); H01G 11/10 (2013.01); H02J 7/0013 (2013.01); H02J 7/0029 (2013.01); H02M 1/4208 (2013.01); H02M 3/33569 (2013.01); H05K 7/20909 (2013.01); H02J 2207/20 (2020.01); H02J 2207/50 (2020.01); H02M 7/53871 (2013.01)] | 20 Claims |

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1. An energy storage system comprising:
an energy storage system housing;
a plurality of lithium-ion hybrid ultracapacitors disposed in the energy storage system housing;
a battery management system coupled to the plurality of lithium-ion hybrid ultracapacitors and operable to selectively access a portion of the plurality of lithium-ion hybrid ultracapacitors based at least in part on a measured parameter of the plurality of lithium-ion hybrid ultracapacitors,
wherein, in response to an overcurrent, the battery management system is configured to cause a logging of an event associated with the overcurrent into a memory associated with the battery management system, the logging of the event for predicting an end of life of the plurality of lithium-ion hybrid ultracapacitors,
wherein if alternating current (AC) power is unavailable and a voltage of the plurality of lithium-ion hybrid ultracapacitors is above a predetermined voltage threshold, direct current (DC) power is provided from the plurality of lithium-ion hybrid ultracapacitors,
wherein the battery management system and the plurality of lithium-ion hybrid ultracapacitors are operable to be placed into a hibernation state responsive to the energy storage system having a charge below a minimum charge threshold, and
wherein the battery management system and the plurality of lithium-ion hybrid ultracapacitors are further operable to be activated out of the hibernation state responsive to the plurality of lithium-ion hybrid ultracapacitors having charge above the minimum charge threshold; and
a charger electrically coupled to the plurality of lithium-ion hybrid ultracapacitors to thereby charge the plurality of lithium-ion hybrid ultracapacitors.
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