I have a small solar system with a 20W panel and 16Ah of AGM SLA storage, which is used nightly for running a few 5W 12V LED bulbs. I'm after a reasonable controller to try and maximise the lifetime of the AGM SLA.
The Morningstar SS-6L-12V looks attractive, as it has a flooded mode which absorbs to 14.4V (good for AGM), but they're all gen3 which have a monthly equalisation charge to 14.9V for 3 hours (not so good for AGM).
The battery states that its cycle-use charge voltage of 14.4-15.0V, so my question basically is, would that monthly 14.9V equalisation do much harm to the AGM, considering that it's still within its rated cycle charge voltage?
My other option was the Morningstar Sunguard, but it only absorbs to 14.1V, which is apparently pretty bad for AGMs.
Otherwise, if anyone has any suggestions for a different controller that would be suitable, and under US$50, feel free to recommend. Thanks
The Morningstar SS-6L-12V looks attractive, as it has a flooded mode which absorbs to 14.4V (good for AGM), but they're all gen3 which have a monthly equalisation charge to 14.9V for 3 hours (not so good for AGM).
The battery states that its cycle-use charge voltage of 14.4-15.0V, so my question basically is, would that monthly 14.9V equalisation do much harm to the AGM, considering that it's still within its rated cycle charge voltage?
My other option was the Morningstar Sunguard, but it only absorbs to 14.1V, which is apparently pretty bad for AGMs.
Otherwise, if anyone has any suggestions for a different controller that would be suitable, and under US$50, feel free to recommend. Thanks
Comment