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
The starting converter output voltage is hard to know. We see the two voltages at each end of the wires from charger to battery, with the difference being voltage drop at the current at the time. The "converter voltage" plotted would be the actual converter voltage as pulled down somewhat by the battery voltage.
When I set my adjustable voltage converter to 14.8 before starting a recharge, the voltage at the converter's terminals drops right away on start up to whatever the battery voltage spikes to, say 13.6. Then it slowly climbs till it gets to 14.8. At near that point amps start to taper.
Here is an ugly graph of the adjustable PowerMax 100 amper when it was near freezing out, so 14.8 adjusted is 15.2 which is what I set the converter at. The amps start at 100 with this thing, but within a couple minutes amps are higher, to 103. I guess the batteries warm up or something.
The two voltages don't come closer at the end because Vbatt was with the Trimetric and Vconv was from its volt meter, both being only to one decimal point. They should be near the same voltage by the end there with current way down.
When I set my adjustable voltage converter to 14.8 before starting a recharge, the voltage at the converter's terminals drops right away on start up to whatever the battery voltage spikes to, say 13.6. Then it slowly climbs till it gets to 14.8. At near that point amps start to taper.
Here is an ugly graph of the adjustable PowerMax 100 amper when it was near freezing out, so 14.8 adjusted is 15.2 which is what I set the converter at. The amps start at 100 with this thing, but within a couple minutes amps are higher, to 103. I guess the batteries warm up or something.
The two voltages don't come closer at the end because Vbatt was with the Trimetric and Vconv was from its volt meter, both being only to one decimal point. They should be near the same voltage by the end there with current way down.
