Its recommended that when choosing a new battery, a battery that has the greatest reserve capacity or amp hour rating is chosen. Of course the physical size, cable hook up and terminal type must also be taken into consideration.
Other recommended battery types include Gel-Cell or Absorbed Glass Mat (AGM) rather than a Wet Cell; if the battery is not or can not receive regular maintenance.
Be sure to purchase the correct type of battery for the job. An engine starting battery will need a very different charge to a deep cycle battery.
Freshness of a new battery is very important. The longer a battery has been sitting and not charged, the more damaging sulfation has likely built up on the plates.
Most batteries have a date of manufacturers code on them. The month is indicated by a letter ‘A’ being January and a number ‘4’ being 2004. C4 would tell us the battery was manufactured in March 2004.