Chris_in_Texas wrote:Yes in Texas I would only see about 3 years at most on the batteries. That is keeping an eye on the levels as well. The heat isn't their friends for sure. I would just replace with cheaper Walmart Group 29 and get the 36 month replacement warranty along with additional 2 years of pro rated replacement. I am not sure what size your dealer used as according to my dealer Regal doesn't ship them with batteries and its up to the dealer to put them in. I had three Interstate G31 truck batteries in there when I purchased it.
prisk wrote:I replaced the battery today. Turns out the old one had exploded (that explains the loud bang/crack noise I heard on Thursday). The water caps were blown off - one was in the bilge and one was behind the battery. The top was broken and peeled back partially, and the strap holding down the battery was broken. A part of the left side was blown clear off and parts of the battery case were lying around it. Glad it didn't do more damage.
Thinking maybe I should replace the cranking batteries in the off-season before the same thing happens to them. Although they seem to be performing just fine. They are also much harder to get at than the house battery.
Chris_in_Texas wrote:I just go with the flooded cell G27:
https://www.walmart.com/ip/EverStart-Ma ... 7/28275658
For the price and warranty its hard to beat them for the most part. With the heat in Texas the batteries don't last. I am sure that AGM ones would but for the price you spend on 3 of them, you can purchase these a number of times for sure. The downside is keeping them topped off fluid wise as they are a pain to get too.
Chris_in_Texas wrote:They have different charging profiles, each phase is a bit different when they go from phase to phase. Either you will not charge the flooded cell correctly or the AGMs correctly and you won't float them at the correct voltage when charged. Ideally the voltage regulator out of the alternators has to be changed when you move from flooded cells to AGMs, however because normally the engines aren't on all the time vs the charger its not near as important with those.
With AGM's the colder it is the higher the float voltage has to be, and many smart chargers will compensate for this. What happens is when you get down in the 68F range you should be around 13.94 float on an AGM, however that is high enough to boil off a flooded cell, the colder it gets in theory the higher the float level should set at around 32F you are up to 14.4VDC float voltages. The Promariner charger will do temp compensation as well, but not sure to what extremes it will ultimately go to at temps change.
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