PD Converters and Water Usage
For Dry Campers Only No secret I've been a fan of PD converters for 15 yrs or more, and for more than one reason. The PD maintains my batteries every day of the year, except for the 4-5 months that...
Forum Discussion
Need to make a correction. The PD was not tested in my rig. I have a '07 Navion J, the other rig is a '07 Navion H. The converter in the H is located closer to the battery (two G24).
The J battery line resistance is 28 mohm
The H battery line resistance is 16 mohm
The batteries were discharged by about 50 AH.
The J has 75% more resistance! Despite this extreme difference, the Iota beats the PD by about 18%.
The problem I have with the PD is that in boost it operates open loop. The output voltage can be anywhere between 13.8V and 14.4V. It it should always go directly to 14.4V or max current when the battery is depleted. No PD does that. It isn't operating to its fullest capability. It's a slacker!
It takes the PD almost 2 hours to get to 14.2V, and start to pass the Iota in output voltage. It takes the PD almost one hour to pass the modified Parallex 7345 in output voltage. That's lame!
BTW, I didn't know it at the time but this Iota was defective. No matter what, it stayed in boost for only 15 min.
After getting a replacement converter, installing two GC2 and locating them closer to the batteries, the Iota gives a solid performance. It stays in boost for about 2 hours.
As for the topic being battery water, the OP himself changed it to performance.
The J battery line resistance is 28 mohm
The H battery line resistance is 16 mohm
The batteries were discharged by about 50 AH.
The J has 75% more resistance! Despite this extreme difference, the Iota beats the PD by about 18%.
The problem I have with the PD is that in boost it operates open loop. The output voltage can be anywhere between 13.8V and 14.4V. It it should always go directly to 14.4V or max current when the battery is depleted. No PD does that. It isn't operating to its fullest capability. It's a slacker!
It takes the PD almost 2 hours to get to 14.2V, and start to pass the Iota in output voltage. It takes the PD almost one hour to pass the modified Parallex 7345 in output voltage. That's lame!
BTW, I didn't know it at the time but this Iota was defective. No matter what, it stayed in boost for only 15 min.
After getting a replacement converter, installing two GC2 and locating them closer to the batteries, the Iota gives a solid performance. It stays in boost for about 2 hours.
As for the topic being battery water, the OP himself changed it to performance.
