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-   -   Drop in Lithium to Replace FLA in Cart & Boat (http://www.buggiesgonewild.com/all-things-lithium/154998-drop-lithium-replace-fla-cart-boat.html)

cricketo 07-17-2019 10:05 PM

Re: Drop in Lithium to Replace FLA in Cart & Boat
 
For cranking applications it may be worth to consider a supercap bank - charge it from the Lithium pack, then flip over for starting the motor.

Hunter450 07-18-2019 08:54 AM

Re: Drop in Lithium to Replace FLA in Cart & Boat
 
Quote:

Originally Posted by cricketo (Post 1636537)
For cranking applications it may be worth to consider a supercap bank - charge it from the Lithium pack, then flip over for starting the motor.

I'm not familiar with a "supercap bank". The serious bass fishing group are cranking their 250hp motors with a single 125AH lithium battery so to keep things simple, my plan to parallel 2 of the 100AH batteries would provide 700 amp peak discharge current.

cricketo 07-18-2019 09:10 AM

Re: Drop in Lithium to Replace FLA in Cart & Boat
 
Quote:

Originally Posted by Hunter450 (Post 1636633)
I'm not familiar with a "supercap bank". The serious bass fishing group are cranking their 250hp motors with a single 125AH lithium battery so to keep things simple, my plan to parallel 2 of the 100AH batteries would provide 700 amp peak discharge current.

Super capacitors. There are quite a few videos of people building a bank out of them for engine starting applications.

Hunter450 07-29-2019 12:56 PM

Re: Drop in Lithium to Replace FLA in Cart & Boat
 
Quote:

Originally Posted by ThreeCW (Post 1635611)
Can you download a run file from your Alltrax controller to determine your amperage draw? I believe you will need to connect it to a laptop computer.

Either that or you could use a clamp on DC amp meter.

I did just that and made some test runs this weekend and logged the data and have sent them to Alltrax for help. I did 3 separate runs 1.) Flat road-100% throttle, 2.) Uphill road climb -100% throttle and 3.) Uphill road climb at approx. 50% throttle. The tool kit is awesome and tells the real story. Here are a few of the results from the runs

Flat Road Test 1:
Max rpms-3933, Max Battery Current Amps-216, Max Motor Amps-246

Uphill Test 2:
Max rpms-2900, Max Battery Current Amps-290, Max Motor Amps-273

Uphill Test 3:
Max rpms-1688, Battery Current Amps-120-130, Max Motor Amps-210


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