Are these the connectors that the dealer will need for the upgraded 2S battery EFLB1802S20 by E-flite? It looks like that battery has a different connector and the only charger that will work will be the one that comes with it.
EFLA700UM
EFLA7001UM



The EFLB1202S20 pack that comes with the plane has same plug as the EFLB1802S20 battery pack. The EFLA700UM AND EFLA7001UM are charger adaptor so these batteries can be also charged with EFL charger EFLC505 and THP610 charger. This adaptor would be often required for those customers that would like to use these chargers that they already have. The charger adaptors are charging and balancing cord.