Looking for a mid-sized sealed battery, something that can put up with the higher loads of a stereo.

What brands are recommended and where would I be able to pick one up?

I have been looking at optima, but they seem very over-priced. Kinetic used to be reasonably priced, but they seem to have gone the same way.

 

i use MARATHON M12V90F batteries. they are heavy as HECK and VERY pricey but i am lucky to drop 2V at most with vehicle running and no lights flickering.
i can listen to radio upto 5 hours before killing.
have seperation relay from truck battery so i can still stat truck to charge back up.

i have some for sale for $200 each
www.apeximg.com/spec/SLA0063.pdf


otherwise i used redtop before

 

Look no further, I am using the same one as a secondary trunk battery and was able to support 2k+ watts dipping into 12.5 volts at idle full tilt and would stay above 13.2 volts while driving. For $90 bucks its a steal.
Deka Intimidator 9A34M Marine AGM Battery Deka Intimidator 9A34M AGM Marine Battery - Remy Battery