Same happening with me .. i purchase the battery for my coure.. and ask the person that i need 50-amp battery as i have sound system in my car .
he ask me ... aap beefiakar rahe ye 50-amp ki hai bohat zabardast chalee ge..
after install the battery on the very next day my brother go with their friend for outing ... in night he telling me k...
bhai battery down hoo gaee .. 30 min sound system ko chlaya toh ..
i search on the internet and find the list that the battery has amp of 32 not 50 .... :((
lier cheater they are ..