[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: (ET) motive power sources

Just to move, you need to be able to draw 50 Amps surge, 10-20 running on the flat to slight incline, In low 1.
If you wire battery packs in series, you also need to be sure they are designed and rated to handle the total voltage.
A 3AH 36V battery would give you about 0.15 hours of run time at a 20Amp draw. 2) 18V 3AH batteries in series is still 3 AH.  AH add for batteries in parallel.
I converted my ET to Lithium Ion batteries, but I am using batteries from a BMW i3, rated to deliver 150Amps continuously, 300A for 10 seconds.  I have 2 sets in parallel.  With a BMS rated for this kind of power. 

Dave

On 5/12/2024 3:05 PM, Mike Finck via Elec-trak wrote:

I recall reading/hearing that an Electrak can be motive by plugging in the 
charger (with an extension cord) and using it as a power source, sans 
batteries. Comments?

Also i was wanting a temporary/portable battery pack just for short 
distance moves for an  E-16 that i do not keep batteries in. Seeing the 
battery powered ZTR mowers using multiple tool batteries for power I 
schemed up a tote box using 4 Ryobi 18v tool batteries wiring them to 
produce 36v. I had found caps/sleeves/adapters that slip over the battery 
post with 12ga leads. Perfect. And the tractor worked! However, one of the 
off-brand batts failed. I disposed of it months ago but recent reflection 
i believe I used 2-3amp/hr and 2-1.5amp/hr batts. Perhaps that is relevant 
info.
As an aside, what might the range be for 4-3amp/hr batts?
Thanks for any discussion 🙂
Mike
Pix would be fun but i don’t know how to keep them from being scrubbed.


Sent from my iPhone

_______________________________________________
Elec-trak mailing list
Elec-trak cosmos phy tufts edu
https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak