Battery not under warranty

I purchased an OmniPower battery from segensolar, and sinetech was the supplier. After 6 months the battery (value around 5k) failed. I was then met with pre installations conditions which was never specified on the original purchase of battery. Dissapointed in omni power.....as a security company we do alot of cctv installations on farms. Sinetech/Omnipower failed test 1. Will stick to Bosch and deltech