Batteyr charging in an RV

panther3505 wrote:
5. Current converter “multi-stage” technology offers no real benefit over a single stage converter. When viewing the charge curve of a single-stage versus a multi-stage converter, the charging is nearly identical. The only thing that stands out is the fixed points in which the output voltages drop, however, time and current are constant regardless of single or multi-stage. Even with more popular 4 stage converters on the market, the misnomers that abound in the RV world are frightening. According to major battery manufacturers, the voltages that are required to desulfate or equalize a battery need to be a minimum of 15.4VDC. Due to the limitations of an RV’s electrical system that is 13-14.4vdc, the voltages required to desulfate a battery would be detrimental the sensitive low voltage systems now inside modern RV’s.

So if I have a 70% depleted battery and a 90 minute window to run my generator you are saying a fixed voltage of 13.6 volts is the same as a multistage charging at 14.4 volts?

This graph must be flat out wrong?



http://www.progressivedyn.com/charge_wizard.html