LiFePO4 Converter Change?
I just want to switch from lead acid to lithium, not upgrade wires and everything else. Finding a new replacement board for my WF-8955PEC seems to be complicated. Straight 14.6V continuous boost singl...
Forum Discussion
pianotuna wrote:
Power factor on PD units is 0.7.
Power factor on powermax is 0.85. (they call it efficiency)
https://www.boatandrvaccessories.com/en-ca/products/powermax-pm3-75-12-volt-75-amp-converter-charger
Power factor in this application is nearly an inconsequential stat, and one that might even be skewed depending on voltage-current adjustment…
However, from what I can tell there appears to be other more substantial differences between the Power Max and the Progressive Dynamics charging strategies as follows;
Power max basics:
The charger’s ‘trigger point’ to return to 14.6v stage is not well defined, nor is the duration at this voltage, so it’s hard to know whether cell-balancing (or meter resync) has occured.
One advantage here seems to be that there’s no real need to periodically monitor SOC, yet when held at a possible near constant full charge, one might suspect this may adversely impact battery longevity…
https://powermaxconverters.com/wp-content/uploads/2021/11/PM3-LKL-Manual.docx
PD basics:
Once the battery voltage has risen to 14.6v, then followed by 1 hr holding period (presumably to allow for cell balancing) the charger reverts back to and holds at 13.6v…Charger stays at 13.6v to again repeat the 14.6v charging cycle in 8 days, or presumably triggered upon reaching a voltage somewhat lower than 13.6v…
(Note: ‘CW’ means built-in smart Charge Wizard’)
https://www.progressivedyn.com/wp-content/uploads/Support/manuals/Technical-library/Two-stage-lithium.pdf
Considering either device, my preference would be the latter, JMO,
3 tons
