A jumper battery or pack might work on vehicles that don't care for a certain voltage and where the reflash doesn't take long. A reflash on a domestic vehicle shouldn't take more than 30 minutes, usually less. Nissan on the other hand, can take four hours or more with a J2534 device (my record: over 10 hours on a 2000 Maxima, was successful though). I would recommend to invest in a quality power supply now, than to have to deal with a control module that's a brick and a disappointed customer later.
The Midtronics PSC-550 works very well, but it's pricey. This model is sold under another brand as well, for less $$$. I can't find the info right now, I'll look for it later.
The Midtronics PSC-550 works very well, but it's pricey. This model is sold under another brand as well, for less $$$. I can't find the info right now, I'll look for it later.
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