Sealed AGM

Sealed deep cycle batteries for solar, marine, motorhome and standby use. Sealed means no topping up and no acid to spill.

Deep cycle is not the same thing as a starting battery, and the two are not interchangeable. A starting battery gives a huge amount of current for up to two seconds and hates being run down. A deep cycle battery has thick plates and is built to be discharged and recharged over and over, which is what a house bank does typically every single day.

Four ranges, and what separates them is cycle life: how many times you can take the battery down and put it back before it is finished. All the numbers below are at 30 percent depth of discharge, because that is the figure that decides how long a bank lasts.

The E2 is the standard at about 1500 cycles, and it is the right battery for a bank that gets used sometimes rather than daily. The E2 Ultra is the same case and the same weight for about 2000. The E2 Ultra G2 goes to about 2600, and it wants a higher absorption voltage in the range of 14.6V – 14.8V, so check your charger will do that before you buy one. The C2 Carbon is lead carbon rather than plain AGM: about 4500 cycles, and it takes charge much faster, 0 to 80 percent in two hours. The PROFLEX lead carbon 200Ah is the longest lived of the lot at 6000 cycles and carries a 7 year warranty against the 5 years on the NOMAD range.

The cheapest battery is almost never the cheapest bank. A 130Ah E2 at 1500 cycles and a 140Ah C2 Carbon at 4500 are not the same purchase, because the second one will still be working when you have replaced the first one twice.

Sizes run from 9Ah to 300Ah, all 12V, and bigger banks are built by wiring multiple together. Tell us the daily load in amp hours and how many days you want to run without sun, and we will size the bank for you.