Any balance charger is suitable for charging any LiPo battery provided the charger is capable of charging that specific size (i.e. 2s, 3s, 4s). The two batteries you posted pictures of look like they are 2S 7.4v LiPo batteries so yes, the EZ-Robot balance port charger will charge them.
The EZ-Robot charger charges at less than 1 amp (800mA if memory serves correctly) and therefore it will take a long time to charge a 5200mAh battery (5200/800 = 6.5 hours) but it will work.
Any balance charger is suitable for charging any LiPo battery provided the charger is capable of charging that specific size (i.e. 2s, 3s, 4s). The two batteries you posted pictures of look like they are 2S 7.4v LiPo batteries so yes, the EZ-Robot balance port charger will charge them.
The EZ-Robot charger charges at less than 1 amp (800mA if memory serves correctly) and therefore it will take a long time to charge a 5200mAh battery (5200/800 = 6.5 hours) but it will work.
thank you very much rich.