bmwhitetx
Well-known member
Congrats on the purchase. I bought MickeyAO's Mongoose a couple of weeks ago but had been looking at that Topdon.I'll note it doesn't look like this one has aligator clips, but those won't cost $200 which is the next step up for the next Powermax or even more for the Clore. I would never have another need than for applying updates to the truck, so truly looking to keep that expense reasonable.
It would be nice to get both of these for less than the cost of the Mongoose alone.
I made my own supply out of a 1200W HP Server power supply (because I can
I bought these 3-foot 8-gauge cables and just connect them directly to the battery with 6mm nuts. No alligator clips to mess with. If you do this, you need to connect to the negative lug on the BMS module and not the actual battery. I did buy just plain alligator clips that can attach to the cables for when I work on my son's Mach-E.
There can be quite a bit of voltage drop on the DC side at 75 amps, so I kept those cables short so I could use #8 instead of #4 for example. There are online calculators that will tell you the voltage drop for various cable lengths.
To answer your 1st question, the power supply will provide whatever amps are needed. On the Mach-E, it provided 28 amps and on my Lightning close to 70. The 12V battery SOC will also vary this. I wired in a cheap DC volt ammeter. so I could monitor the power supply's output voltage and amps supplied.
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