Your battery charger must be compatible for LiPo chemistry and the parallel charge process only works when charging batteries of the same cell count, of similar age and of similar discharge states. As long as these needs are met, plug in your 2S batteries to the Parallel Charge Board and let the juice flow.

Important Parallel Charging Rules:

• Only charge LiPo chemistry batteries
  
• Only charge 2S LiPo batteries
  
• Only charge batteries with similar states of discharge (within 0.2V)
  
• Always program the charger to the total capacity of all attached batteries (Example: if charging five 300mAh batteries, set the charger to 1,500mAh. *It is ok to charge batteries with different mAh capacities)

Features:

• Charge twelve batteries at once
• Convenient 3 pin JST-PH battery connector
  
• 4mm gold bullet input connectors
  
• Balances each individual cell of each battery

Specifications:
Batteries: 12x 2S 7.4V batteries
Battery Connector: 3-Pin JST-PH
Input Connector: 4mm Gold Bullet
Input Connector Length: 5.50in (13.9cm)
Dimensions (LxWxH*): 2.5x1.25x0.5in (6.4x3.2x1.2cm)