So, I’m doing research on what is out there to hopefully make the right choice. I’m only listing ones that I could actually use (ie: rated > 25amps, ideally higher, and have an input voltage appropriate for my pack at 154v nominal).
Cloud Electric generic brand. $280
Probably the same as the Kelly, but has a bit higher output, which I like.
132-168V nominal input 13.6V / 35A out (sealed type)
Which are these ones imported from China: http://www.hztiecheng.com/english/ specifically: http://www.hztiecheng.com/english/Product/T16/38.html
Others that might meet my needs, but have concerns:
Vicor: 150V Input Maxi Family DC-DC Converter – $280’ish
But, these are just the bricks and not a complete system! Vicor produces high quality parts, from what I hear
Kelly HWZ Series DC/DC Converter 156V to 13.5V 25A – $150
I’ve heard from two sources that Kellys are bad. Another source (Travis) has had good success with them.
Zivan – $498 – $525
14vdc / 60 amps output. I’m not so sure about the Zivan, since they seem to be more of an AC-DC charger, than a purely designed DC-DC converter. It looks like they come with an AC plug, which I don’t want. I want something designed for a car.
Elcon – $250, 25amps out
These seem to be the same one as the generic Cloud Electric ones, just rebranded. The pictures and part numbers are identical.
So, I’m opting for the Belktronix — it gives the most output (35 amps) with no fans, and higher output if you cool it (up to 55amps). Plus, Bryan is quick to answer emails and seems to really support his products. Unfortunately, it has a 3-4 week lead time, and right now I’m using my car with the temporary fix again (another inrush limiter) which could fail at anytime.
How much would it cost me to drive a gas car for 4 weeks, assuming I can charge at work for free? I drive 40 miles/day on normal, and 50 miles when I got to the gym (twice a week). 40*3 + 50*2 = 120 +100 = 220 miles / week for 4 weeks gives: 880 miles. Say I drive the old Ford Focus we have, ~30mpg: 880/30 = ~29.3 gallons of gas. Times $4/gallon (which it basically is here in CA): $117. It would be worth it that much for me to get the converter earlier to avoid using the gas car. (NOTE: Edited my math).