Consider the following list of items when chooseing a battery charger:
Flooded, Sealed, VRLA, AGM, GEL, etc.*
This is the capacity in amp hours. Some batteries will not have this number displayed on their label. Typical labels will show either CCA (Cold Cranking Amps) or Reserve Capacity in Minutes. Reserve capacity is the number of minutes that the battery can deliver a constant 25 amps to a load.
What is the application? SLI (Starting Lighting Ignition), Deep Cycle, or Standby Power.
Shallow cycling (discharging 20% to 50% of the battery’s capacity) does not usually require as much recharge power as deep cycling (discharging more than 50% of the battery’s capacity).
*Note: All Deltran battery chargers will charge all types of lead acid batteries: either flooded (standard STD), sealed maintenance free Absorbed Glass Mat (AGM), or sealed maintenance free gelled electrolyte (GEL) batteries. However, for optimum battery performance in deep cycle applications (for example, running a trolling motor), it is best to chose the Deltran charger that has the charging software specifically designed for the battery type. Fortunately, since the technical staff at Deltran has developed charging software that works equally well for both STD & AGM batteries, the only choice to be made is between 2 models: either STD & AGM or GEL software.