Any really good reason to upgrade to AGM?
The Interstate standard LA battery (single 12V) in our TT is getting replaced today under warranty today due to a dead cell. Is there a good reason(s) to upgrade to an AGM battery? We never dry camp...
Forum Discussion
pianotuna wrote:
Hi,
Always teasing us, eh? What brand are these AGM's? Thanks in advance.
Don,
The two 12V AGM batteries we've had in our Class C all these years are the model shown at the bottom of this chart. I believe they are/were made by C&D Technologies for Interstate. As you can see at the top of the page, they're intended to be for "Wheelchair" use - which just happens to about match the type of perfomance needed for RV use. Note that their float voltage range is 13.5V-13.8V:
http://www.interstatebatteries.com/content/product_info/wheelchair_spec.asp
Here's the spec sheet for another excellent Fullriver 12V AGM battery that you can see also has a recommended float voltage range of 13.6V-13.8V:
http://www.dcbattery.com/fullriver_dc115-12.pdf
My "theory/idea/position" - and what has worked for us - is that if one wants to not spend money to replace a stock 13.6V fixed voltage converter that came in their RV while at the same time upgrade to AGM batteries ... just install AGM batteries with a float voltage range that matches what the converter's nominal output voltage is.
