Re: 2 amps on one battery?
You should be fine.
Most people don't pull anywhere near rated power. I have three 1000 watt amps on one battery, combined they never pull more than 80 amps when playing music.
Your concern should really be your alternators output rating not the number of battery's.
Work van - Pioneer Prs DEH80
PPI. P-1000.1 -- P-900.4 -- P-1000.1
***Front DEQ.8 - Satori 6.5", Satori tweeters, *** Rear JBL MS-8, stock rears (looking for a good efficient coaxial)
Sub testing, * SI's BM MKIV and *Pioneer TS-W1200PRO