Re: Batteries - EV Conversion

On 4/6/2025 10:06 AM, Jim Wilkins wrote:

"Jim Wilkins"  wrote in message news:vstnuv$s7al$1@dont-email.me...
 For LiFePO4 the current limit is typically the Amp-hour rating or a small
multiple of it, ...
---------------------------
Which means that a 12V, 100Ah LiFePO4 could ideally power a 1.6 HP motor for an hour. 16 of them in the BMS maximum 4S4P configuration equals 25HP. I had such an engine in a Beetle, whose 0-60 time was 15 minutes while the tranny oil warmed up.
 That was a good excuse to avoid the Autobahn and instead wander through picturesque little villages on service calls. At the time the Autobahn was a squareish loop around the edges of Bavaria and cutting across diagonally was nearly as quick, plus a Jeep or Army truck wasn't much faster and I couldn't leave them parked outside a Gasthaus overnight.
 

 From what I have found the only "economical" way to even make good use of a mid voltage motor like the Hyper 9 is to buy used commercial EV cells.  If I ran with something like a 48 volt forklift battery as Clare Snyder suggest I could run multiple LiFePos in parallel, but for higher voltages I'm stuck with used commercial Lithium Ion EV cells.  Well, new cells/modules are available, but they price puts it back in new car range.
--
Bob La Londe
CNC Molds N Stuff
--
This email has been checked for viruses by AVG antivirus software.
www.avg.com