Battery management system utilizing stackable batteries

An energy storage system comprising:

• a load pack having a plurality of loads connected in electrical series with respect to one another;
• at least one battery pack having a plurality of battery cells connected in electrical series with respect to one another, wherein said plurality of battery cells of said at least one battery pack is connected in electrical parallel with said plurality of loads of said at least one load pack;
• a controller operatively connected to said plurality of loads and operable for managing charging and usage of said plurality of battery cells;
• wherein the load pack and said at least one battery pack each include at least one connector;
• and
• at least one of an additional battery pack and an additional load pack having at least one complementary connector connectable to said at least one connector so that said at least one of an additional battery pack and an additional load pack is operatively connectable in parallel with the load pack and with said at least one battery pack, and is operatively connected to the controller when said at least one connector is connected with said at least one complementary connector.

A method of managing battery capacity comprising:

• connecting a load pack and a battery pack in electrical parallel with respect to one another and in operative connection with a controller;
• and
• connecting at least one of an additional battery pack and an additional load pack to electrical connectors of the load pack and the battery pack such that said at least one of an additional battery pack and an additional load pack are in operative connection with the controller;
• and
• controlling a total load of the load pack and the additional load pack to a total capacity of the battery pack and the additional battery pack within a predetermined ratio range via the controller.