Minn Kota and Lithium Ion batteries

[baitable]

Mate of mine imported a Rhodan from the US last year for his 7.8m Riptide, fortunately before Covid. He reckons it was worthwhile, solidly built and hasn't missed a beat. He originally ordered it as none of the others had the length of shaft he needed at the time. They others have since brought out longer shafts but still seem to suffer other issues.

Yup but what happens if you need a replacement part or a warranty claim? If there isnt a dealer in Aus kiss good bye to a timely and cost effective repair... I'm paying for the backing of BLA personally. If it's bought overseas then i'm pretty sure you dont have an AUS backed warranty even if a dealer does come to AUS.;

[Lovey80]

Looks good mate.....

One of the benefits of the individual cells is that you can configure them however you want to fit the space available to put them....

Mine fit nicely in the space beside the passenger seat under the walkway..

Attachment 122767

for simple 12v applications on smaller boats. Would you say that 4x3.2v cells is enough or is 5 (16v) a better way to go?

[disorderly]

for simple 12v applications on smaller boats. Would you say that 4x3.2v cells is enough or is 5 (16v) a better way to go?

The Max charge per cell is 3.65v which makes for 14.6v with 4 cells..

With my 36v bank I charge up to about 42v (14v per 12v bank equivalent or 3.5v per cell) and when we get out there and first deploy the motor it seems to start about about 41.5 v..

These are the first lithiums I have had so i was thankful for the advice of Tim at EV works and it seems by the graph on the spec sheet I am working within the parameters provided..I have not experienced any negative issues with the motor (aside form a gps replacement) over its 15 months of regular use so far, where it can often be run for 8-10 hrs per day, often over a 2 day fishing trip..

voltage chart for calb 100.jpg

[gazza2006au]

Heres an interesting read on lithium technology advancements

https://arstechnica.com/science/2020...-breakthrough/

[Lovey80]

The Max charge per cell is 3.65v which makes for 14.6v with 4 cells..

With my 36v bank I charge up to about 42v (14v per 12v bank equivalent or 3.5v per cell) and when we get out there and first deploy the motor it seems to start about about 41.5 v..

These are the first lithiums I have had so i was thankful for the advice of Tim at EV works and it seems by the graph on the spec sheet I am working within the parameters provided..I have not experienced any negative issues with the motor (aside form a gps replacement) over its 15 months of regular use so far, where it can often be run for 8-10 hrs per day, often over a 2 day fishing trip..

voltage chart for calb 100.jpg

thanks for that. Would you use a 100ah set up for a start battery? Say on smaller 60-100hp engines?

[rayken1938]

for simple 12v applications on smaller boats. Would you say that 4x3.2v cells is enough or is 5 (16v) a better way to go?

Would be hard to get a charger to put out the voltage for a 16v bank and also be worried about the higher voltage on the electronics in the motor.

[The Mad Cat]

thanks for that. Would you use a 100ah set up for a start battery? Say on smaller 60-100hp engines?

http://www.ausfish.com.au/vforum/sho...tarter-battery

I spoke to a couple of auto sparkies and they thought the technology was not there yet.

TMC

[disorderly]

thanks for that. Would you use a 100ah set up for a start battery? Say on smaller 60-100hp engines?

Yeah i looked into it and decided not to for the reason The Mad cat suggests..then I thought about using one for my auxiliary house battery but decided against that because my Honda's alternator charges at about 90 amps whereas i was recommended not to charge the CALBS above about 40..(the 240v charger i use at home is about 5 amps).

I ended up going 2 dual purpose 100amp lead acid batteries though i would love the weight drop and extra capacity of lithiums (CALBS supposedly claim 2000 cycles to 100% DOD) .

Hopefully it wont be long before the technology catches up ..for me it would mean a weight saving of almost 50kg including the extra stand alone 12v lithium I carry for appliances..

[Lovey80]

Cheers

i think I’ll look at an LTO battery.

[disorderly]

Cheers

i think I’ll look at an LTO battery.

Like these ones..?

https://www.ebay.com.au/itm/Solarkin...-/223916714903

I particularly like this feature..


"These batteries can be shot with a gun, drilled through or pierced and the battery will still function safely."

just cause ya never know if someone will take ramp rage too far and start blasting at your boat with a shotgun..?...

[Lovey80]

Oops. Double post

[Lovey80]

Like these ones..?

https://www.ebay.com.au/itm/Solarkin...-/223916714903

I particularly like this feature..


"These batteries can be shot with a gun, drilled through or pierced and the battery will still function safely."

just cause ya never know if someone will take ramp rage too far and start blasting at your boat with a shotgun..?...

was thinking more like these.

https://www.ebay.com.au/itm/Lot-of-1...-/223465807026

[Dignity]

was thinking more like these.

https://www.ebay.com.au/itm/Lot-of-1...-/223465807026

Titanate appears to be the next step, only 20 amps for this lot, add transport from Kansas and probably just short of a grand. There are Iron Phosphate ones for cranking but very few. I would Love to change my batteries over but with only 1 to 2 years before I down grade Allison and upgrade the tinnie (just one boat, not sure I'll like it but age takes its toll) I'm not sure it is worth the expense now.

[gazza2006au]

Hey guys while you're considering lead acid filled vs lifepo4 etc.. i recall reading about a guy that was out boating solo and his boat capsized he was found clinging to the hull with reported burning to his skin from the salt water

Heres a bit of food for thought.. if your running 3x lead acid filled batteries and u capsize the leaching acid may be a concern with your skin..

[shortthenlong]

Sharks, drowning, exposure, hypothermia the list is long and frightening if you let it be but it probably isn't a reason to select one battery over another.

Matt