The Crown 12-85-11 is a heavy duty industrial (fork lift) type battery. These batteries are designed for extremely heavy usage. In a typical solar electric system they will normally last for about 20 years or more. We have been selling these for over 25 years and have the utmost confidence in their reliability. Fork lift batteries have a slightly different plate composition from smaller deep cycle batteries in order to withstand industrial usage. The self-discharge is slightly higher and they should be equalized about once a month. Some solar systems are not capable of putting out enough current to fully equalize these batteries - it will require about 40 to 80 amps, depending on which battery you're using. Most inverter chargers can supply that much amperage.
fernur246 wrote: »
[USER="3299"]Photowhit[/USER] What brand model forklift batteries are you using Photowhit ?