Meanwell is here!!

BFL13 wrote:
My wake up was from smk who told me I could run my 20a Vector and 35a Vector at the same time and get 55a. I ended up with more Vectors and was able to recharge with four doing 130a on the Honda 3000.

If I'm recalling correctly, it may have been pianotuna that years ago - ahead of all of us - started mentioning using multiple chargers at the same time in parallel with each other to speed up RV battery charging.

Because of that, I starting using a Sears 2/10/50 charger along with my Parallax converter to charge our AGMs a bit faster when drycamping. I let the Parallax put out whatever current/voltage it wants to (based on the acceptance of the batts in parallel with the Sears) and set the Sears to it's 50 amp position so it can put out whatever current/voltage it wants to (based on the acceptance of the batts in parallel with the Parallax).

I think that the Parallax is trying to wind up at ~13.6 terminal volts and the Sears is trying to wind up at ~15.5 terminal volts. The parallel combination of the three (batts||Sears||Parallax) turns out to be around 14.2volts, or so, actually on the terminals of the AGM battery bank. The result of all three hooked up together is about 50% more current going into the batts than from the Parallax by itself and still within the load capability of our little EX650 Honda portable generator powering the whole thing - including supplying all other 12V power in the RV while the charging is going on. Both the Sears charger and Honda generator are over 25 years old and make a great charging team along with the converter for our particular set of batteries.