These are high output lipos  discharge  to storage mode after running to minimize puffing ..
Specs
11.1V
8200mAh
100c
91.02Wh
Length 5 1/2"
Width 1 3/4"
Height 1 3/4"
Weight 20.4oz
Due to the nature of the hobby there are no warranties on  lipo batterys. All batteries are tested for voltage and internal resistance  using an  esr meter before shipping ..