Check out the nice page on LiPo batteries explaining all details about them A Guide to Understanding LiPo Batteries

• B1 - Deans (T) type main connector - Female & Male. Used for main connection to speed controllers and motors. Used for medium to high current draw. HOBBYWING chooses this connection mainly
• B2 - JST / BEC type main connector - Female & Male. Used for main connection to speed controllers and motors. Used for low current draw
• B3 - Tamiya main battery plug usually used on Car and Boat batteries (NiCd / NiMh) - Female & Male
• B4 - Bullet Connectors - Female & Male. Single wire connectors, available in a range of different sizes to suit current draw / load requirements from 2mm to 8mm
• B5 - HXT Connectors - Female & Male. Available in 3.5mm and 4.00mm sizes. Used for main battery connectors for medium / high power applications
• B6 - Traxxas Connectors - Male & Female. Mainly used on high current draw car and boat batteries
• B7 - XT60 Connectors - Male & Female. Used for high current draw battery connections
• B8 - EC3 Connectors - Male & Female. Used for high current draw battery connections
• B9 - Flight Power / Thunder Power (FP / TP) LiPo Balance Charger plug - Female & Male
• B10 - Hyperion / PolyQuest (HP / PQ) LiPo Balance Charger plug - Female & Male
• B11 - JST-XHR (XH) LiPo Balance Charger plug - Female & Male
• B12 - JST-EHR (EH) LiPo Balance Charger plug - Female & Male

Check the below picture and list for an overview (kindly taken from Hobbywing - for having a local archive).