Estimado Señor Niner, we are supposed to be smarter than the problem. The problem is the unit is incapable of being overdriven. I own many things that can be easily overdriven and have to deal with it on a case by case basis. I am planning on HAND CARRYING a 60 amp potential (2 Cheapowatts) charger to feed a single group 31 AGM battery. Up the stairs and into a hotel room.
What I do not clearly understand is this: At 22 dollars each and a motor vehicle size that can hide a concert Steinway, why is the insistence of overdriving a single power supply so important? I don't get it - forgive me.
An overdriven power supply is going to do one of two things:
1. Die trying (the cheapo)
2. Shut down and self-protect (MeanWell maybe the MegaWatt)
The concept is similar to connecting an accessory to an unfused power line. If it has the POTENTIAL to overload the power line, something has to be up or downgraded.
The 22 dollar chargers can be connected in parallel through Shottkey diodes. The addition of a Shottkey rectifier is easier and simpler than changing battery cables or spark plugs. It is a snap - no talent needed whatsoever.
If the unit MUST be used singly, back off the voltage. Devices fail because of WATTAGE. Incrementally charge first to 14.4 then to 14.8.
I wasn't joking when I wrote, if you need high voltages use a DC to DC converter. Waiting for me is a 300 watt unit adjustable to 60vdc.
But bashing a converter because it was flogged to the point of suicide is a little unfair don't you think? I am uncomfortable with the notion that a MegaWatt or even a MeanWell can do what some of you seem to be asking of a small defenseless power supply.
Twenty two dollars a pop. Gigantic storage spaces. Look inside those spaces up at the roof (floor). Should start ringing bells.
I am going to experiment with my units. See if a SINGLE pot can control both to an acceptable tolerance. Yes it's going to take custom selection of resistors to bias the reluctant ones into marching cadence. 30-amp ATO fuses on the outputs in case the Cheapos love the story about Chernobyl.
How much confidence do I have in what I write? My VISA card goes where my typing hands are located. I am ordering two more Cheapo-Watts. For eighty eight dollars plus a pair of Shottkey rectifiers and a 15-turn pot I am going to have 120 amps worth of SAFE charging power. The 300-watt DC to DC converter makes this setup ludicrous in overkill. All for a SIXTH of the price of one 40-amp portable charger and a tenth the weight.
I try my best to keep things in perspective.
