| CPC H02J 7/0013 (2013.01) [H02J 7/0042 (2013.01); H02J 7/00712 (2020.01); H02J 7/342 (2020.01); H02J 2207/20 (2020.01)] | 20 Claims | 

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               1. An apparatus comprising: 
            a first controller; 
                a first port connected to the first controller; 
                a first charger module connected to the first port, via the first controller; 
                a second controller; 
                a second port connected to the second controller; 
                a second charger module connected to the second port, via the second controller; 
                the first controller being configured to: 
              form a first connection path between the first charger module and the second port via the second controller; and 
                  form a second connection path between the second charger module and the first port via the first controller. 
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