This week I started 'playing' around with the ebayed Meanwell 48 volt power supplies. First, they will not operate on a battery without current limiting. The supply stays in a tripped state. Adding a 50 ohm current limiter resulted in ~200mA @170volts. The battery I'm charging started at 160 volts.
A few notes. Without diode isolation the power supply leds come on when connected to the pack. They also come on when plugged in in. At most they are slightly warm to the touch at the current levels mentioned. the set voltages of these supplies is also very stable without any fluctuation.
I haven't set up a final charger yet as I'm waiting for the led driver / 300mA current limiters to come in. The battery I am playing with is the battery from the car we picked up from RHDInsight. That battery appears to be less than a few years old and is testing at full capacity. It even has the yellow shrinkwrap on the subpacks. I'm pretty sure it had been replaced under warranty.
__________________
Mark
2000 Silver Insight, #5550
Pioneer P3900MP CD/MP3 4 X Polk Audio 6.5", Stealth Box
Mima #47, BCM Gauge, Escaped™ custom dual battery pack 150v 11AH battery pack, Matiz rear springs & Monroe shocks, 25mm rear wheel spacers & Blasphemer™ spat cutout
|
