Bang, Buck, Batteries

GordonThree wrote:

Chris Bryant wrote:
These want 14.7 for bulk and absorb and float at 13.6. I have not looked that closely at the Magnum manual, but I don't remember a setting close to that.

14.7 yikes, that's a generous bulk voltage for AGM, closest I see is 14.6 as "flooded".

I wonder if your batteries really want that voltage, or if they've been tweaked to tolerate it, to make them "drop in" compatible with flooded batteries?

If your remote is showing "Future" instead of "Custom" you need a firmware upgrade. Under custom, you can set all the parameters:

Magnum Dimensions wrote:
? Set Battery Type (Custom) – This selection allows you to individually adjust the Float, Absorb, and Equalization charge voltage settings and to set an equalization time for your batteries.

The following Custom battery settings display only if Custom has been selected from the 03 Battery Type menu. Use these settings to determine the battery’s absorption, float, and equalization voltages, and the maximum amount of time spent equalizing.

CAUTION: To avoid damage during battery charging or equalization, consult the battery manufacturer to ensure the best charge settings are used for your type of batteries.

I haven't really looked at the inverter- coach is not here, so I'm trying to gather the right manuals to read- just haven't had the time yet - the "future" reference was from a manual, not the unit itself.:)
Full River does like their charging voltages pretty high- http://www.fullriverbattery.com/product/batteries/DC250-6 gives the specs. FWIW, they also make the AGM batteries for Rolls Surette http://rollsbattery.com/agm/- this is the same as the Rolls S6-275 -they use the 100 hour figure for the 275 number.