Batteries are always a hot discussion topic. Jeff Schwen, DeepCycle Battery Store, hosts this video with a great explanation and recommendation for batteries.
This video discusses why a traditional car or truck battery may be failing in some applications. Some new cars and trucks are rolling off the production line with AGM (absorbed glass mat) style batteries because of the vehicles increased demand for 12 volt power. An AGM battery is better equipped to cycle (discharge and recharge) and has a lower self-discharge rate.