QUESTIONS re: MEGA-WATT 33-AMP POWER SUPPLY
This critter can be found on eBay. It is a switching type power supply. Supposed to have an ultimate amperage potential of 33, voltage adjustment of 10, to 15, and work fine as a long term battery ...
Forum Discussion
NinerBikes wrote:
As mex wanderer said, relay timer the lower voltage bulk mode one, when it times out, relay timer the second, higher voltage desulphate model one as the 2nd stage.
2nd stage need only be done every 10-14 days if dry camping in the shade, or if without solar panel or other manual equalize charge methods.
As mex said, this is serious stuff, not for rookies or amateurs. Do I think I could get the settings right? I think so.
GC2 batteries paired, need to see 15.0V daily. Program accordingly. Possibly required for any industrial use lead acid battery with 5% antimony content in the plates, too?
Give them 15.5V or better yet. 15.7V to 16.0V to equalize cells, every 10-14 days.
Program them the way YOU want them, to suit your individual needs... but you better understand your batteries and what they truly need to live a long long life, better than 99.9999% of the rest of North America.
I think this is all possible using just one supply. It looks like the adjustment knob is attached externally, which means it can be automated. The knob is just a variable resistor, so once you find out the resistance is needed for the voltages you want, you just wire in fixed resistors of those values. A multi-selector switch, timers, relays or all of the above can then be used to switch the single supply into different output voltages.
I guess a shoe string budget requires creative solutions. I tweaked the various voltage points on my Magnum Inverter/Charger to match the spec sheet for my DEKA agm batteries. Only a year in, but they're working great and survived the long cold winter without issue.
