Hacking together a ~$5000 48v battery charger using $100 of Old Server Power Supplies -No Resistors
7$1000 to $5000 of value from $0 to $100... $5k, being overpriced brandname chargers.
This is somewhat dangerous; in a follow up video i wire it a bit better. in this video i'm building and testing; the wire sizes are way too small for what is produced.
The need aross todo this, as my generator for the past 1.5 years started having problems; i took it apart and put it back together, unable to find the problem other than 2 spots, the electronics and stepper motor. both i can't really replace.
So, i bought a new generator... a cheaper open-frame AVR generator.
The generator's output fell within spec of my hybrid solar chargers; however, once hooked up, it resulted in random electrical spikes and surges within the chargers. This never happened with my inverter generator... which produced clean electricity 60hz electricity. where as the AVR produces dirty electricity ranging from 110volts to 125 volts, and 50hz to 60hz.
So this is my solution; bypassing the hybrid inverters completely and using my own charging setup. Taking the Dirty AVR generator's electrical input, putting them through some hacked-up server power supplies, and sending it to the batteries.
In part 2 / the next video, i make things less sketchy with some more hacking.
--
HP hstns-pd18 and hstns-pl18 power supplies.
---
something to note; the psus do draw from the DC side to run fans and maybe some other things; it wasn't noticable at first. so you do need something inbetween; ie a breaker, dc rated switch or charge controller, so that you can disconnect them when not charging.