BFL13 wrote:
The PowerMax 100 amper is too much for a pair of 6s. A 75 amper is the most for that.
The 100 will cause the voltage to spike right away, and trigger dropping to 13.6. You will still get good amps, but not at 14.6v which the batteries want for Bulk.
The other thing is that 100 amper will not run on a Honda 2000 at 14.8 ( it just might at 13.6)-- it needs a 3000.
I have a PowerMax 100, but I opened it up and changed the voltage to 14.8 so it is no longer a three stage, just a two stage (Bulk and Absorption), all at 14.8. When I have done my 50-90 I shut off the generator. At home I still use the 13.8 Parallax 7355 as my shore power converter, so I don't need the 100amper to drop to Float.
If you get two more 6s, that 100 amper will be getting used. In fact for 4 sixes you could use their 120 amper :)
I am a big PowerMax fan, but you have to know how to use them to advantage. Their new model, just came out, is perfect IMO--you can pick (and go back and forth on that) auto-three stage or set your own voltage like I did without having to open it up--it has an access hole to the voltage pot inside. They have the "LK" designator in the model name.
I have the "new' model with the pots right in the front so it is easy to make adjustments.
