BAT-SAFE MINI LIPO CHARGING SAFE BOX
You can charge and store up to 2 pcs of 3S 2200mAh equivalent (50Wh) safely inside the BAT-SAFE MINI. 
 
Do not exceed the manufacturers recommendation for maximum 50Wh for charging.  
 
So using the example below a 2S (7.4v) 6700mAh LiPo is the largest battery that can be charged in  a BAT-SAFE MINI.  
 
Wh = V x A 
 
1 LiPo - 2S (7.4v) x 6700 (6.7A) mah = 49.6 Wh  
 
Charging space: 165*100*50mm 
 
Outer dimensions: 195*128*115mm 
 
Weight: 0.7kg