Default Hyperion extended battery???

Ok ordered a Hyperion battery for my S5
Had one for my S4 worked great
Now I did the charge cycle to a point but my battery seem to be acting all dorky.
After a good 8 to 10 hr charge it be at 100% but within 15 min the charge will drop down to also 85%
I know this isn't right
Anyone have this issue yet
Thanks
Current Phone
At&t Samsung S5 in White
32Gb Sandisk MicroSd
Hyperion 6500 battery w/tpu case
Current Tablet
Samsung Note 10.1 Stock in Blue
16Gb MicroSd
[B]Prior Phones [/B]
Motorola Razor HAHAHAHHAHA
Samsung BlackJack II in Red Stock
Samsung Capitivate Too many Roms to remember
Samsung Infuse CM10
Samsung Galaxy SIII Stock
Samsung Galaxy S IV