comparison li po li ion for trolling motor fishing

Joined
May 18, 2018
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291
HI

could someone estimate the price of those 2 options for a 100 amphour battery

how many 18650 would it take 4s?
 
id go with the mnke 26650 from 18650 canada. 20p gives a real 100ah so 80 cells required.

https://18650canada.com/collections/26650/products/mnke-5000mah-26650

i tested it for a 10kw boat conversion im thinking of doing, good bang for the buck
https://endless-sphere.com/forums/viewtopic.php?f=14&t=107191
 
i was looking for a 26650 like a litokala 50amp/5000mah that i could get in Canada.

ES member DogDipStick has a bunch of lg pouch cells down in the used section that he guarantees for probably half the cost of using the mnke.
 
For my 30lb Minnkota, I built a 24AH pack using 8AH lipo pouch cells three years ago. I use it in a kayak.
All-in price is $70 for my pack: $30(cells)+$14(I upgraded resistor-network minnkota controller with much more efficient PWM variable speed)+$25(water-proof case, fittings, copper cable).
 
pullin-gs said:
For my 30lb Minnkota, I built a 24AH pack using 8AH lipo pouch cells three years ago. I use it in a kayak.
All-in price is $70 for my pack: $30(cells)+$14(I upgraded resistor-network minnkota controller with much more efficient PWM variable speed)+$25(water-proof case, fittings, copper cable).

hi very interesting. are ;you saying there is a device that we can add to the old minnkota tech to give it the caracteristic of the new minn kota teck( only using the power needed at low speed)? if you have an how to link about that i would appreciate it .

Also why did you want to use 28650 instead of 188650? is there and advantage?

on the site you liked it says

Size: 26650
Nominal Capacity: 5000mAh
Nominal Voltage: 3.7V
Maximum Voltage: 4.2V
Nominal Capacity: 5000mAh for one cell at 5.85$ can you help me calculate?
for a 100 Amph like recommended in general for 12v trolling day i would need 100 amh divides by 5 amh = 25 cell? is my calculation correct
 
the 26650 weighs twice as much as an 18650 and it has about twice the capacity. you only have to do half the connections. if your spot welding that could save you quite a few thousand spot welds :D or if i use magnets, i only need half the magnets :thumb:
 
goatman said:
the 26650 weighs twice as much as an 18650 and it has about twice the capacity. you only have to do half the connections. if your spot welding that could save you quite a few thousand spot welds :D or if i use magnets, i only need half the magnets :thumb:

hi could you send me a link or tuto how to about those magnets? never heard anything like that in my option exploration.
tx
 
from about here in this thread is what im leaning toward, with plasti dip

https://endless-sphere.com/forums/viewtopic.php?f=14&t=106190&hilit=40t&start=75#p1563730

heres the mnke/magnets/plastidip

https://endless-sphere.com/forums/viewtopic.php?f=14&t=107191
 
want to build said:
For my 30lb Minnkota, I built a 24AH pack using 8AH lipo pouch cells three years ago. I use it in a kayak.
All-in price is $70 for my pack: $30(cells)+$14(I upgraded resistor-network minnkota controller with much more efficient PWM variable speed)+$25(water-proof case, fittings, copper cable).

hi very interesting. are ;you saying there is a device that we can add to the old minnkota tech to give it the caracteristic of the new minn kota teck( only using the power needed at low speed)? if you have an how to link about that i would appreciate it .
[/quote]

Exactly. It is actually a very simple modification.
Remove control assembly, several wires lead to motor through downtube. The red/black wires are the DC brushed motor leads, the yellow wires are resistor (which are housed in motor housing) wires. You no longer need resistor wires. Just hook controller up to motor red/black, and hook power up to controller. Done.

You will need a waterproof enclosure for new controller. I simply put the controller inside the same enclosure I used for the battery and called it a day.
The MPP controller provides gobs more range compared to stock speed controller, especially when you troll at slower speeds (when resistors would have been reducing current to motor).

Includes forward/reverse PWM features.
Here is a link.
https://www.amazon.com/s?k=60A+pwm+speed&ref=nb_sb_noss_2

I bought mine on ebay and got it for about $15.....its $19 now:
https://www.ebay.com/itm/US-10-55V-100A-5000W-Reversible-DC-Motor-Speed-Controller-PWM-Control-Soft-Start/402377320655
60 amp sustained rating should work fine for up to 50lb thrust motor.
 
humm
i d like to have so estimation.

could somehow help me with the maths? plz write the equation so i can re re re learn it, small memory..


12 volt

an 50ah around this

with vtc4 2000mah

having 4 s battery


50 amp peak demand at full speed.

v x a =w
not sure what are the operation to do to discover the nb of cells need could someone write them for this example?

for fans of fishing would that equate around 3 hours of medium trolling?
 
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