BFL13 wrote:
Very few brands of converters have temperature compensation. Only one but it costs you lots (Parallax Paramode) Some inverter/chargers have temp comp for the charger and also some solar charge controllers have it.
I see nothing against the Parallax Paramode unit, and that's what I would replace my Parallax fixed voltage converter with if I ever needed to so as to not spend too much $$. I seems like we can concentrate too much on three stages being required. Notice the lower voltage stage for the Paramode unit ... it gets nicely way down in voltage for safe maintaining/floating (as does it's boost stage get nicely temperature compensated downwards) when it's temperature probe is mounted on the battery and temperatures of the battery creep up into the high range:
https://bestconverter.3dcartstores.com/assets/images/Parallax/4400/4455%20Voltage%20Curves.pdfHowever, here's one of the best RV chargers available if you can afford a bit more for the optimum. It not only has temperature compensation, but also power factor correction to get the best fuel usage efficiency and shortest charging times out of a generator when drycamping:
http://www.xantrex.com/power-products/battery-chargers/truecharge-2-2.aspxHere's a product review on the above Xantrex unit:
http://www.rvdoctor.com/2011/03/product-spotlight-xantrex-truecharge2.html