Texas Fishing Forum

lithium battery question

Posted By: hopalong

lithium battery question - 02/20/22 04:54 PM

anyone here ever had to jump off li-on trolling motor battery to start the boat?

wondering if it is a good or bad idea due to amp draw to start.
Posted By: grout-scout

Re: lithium battery question - 02/20/22 08:45 PM

Won’t work unless it’s a starter rated lithium. You could leave the jumpers hooked to the starting battery and hope it transfer’s enough voltage to let the regular cranker fire over.
Posted By: hopalong

Re: lithium battery question - 02/20/22 09:08 PM

thought that would be the case. guess I will invest in a noco jumper.


Break
Out
Another
Thousand!


roflmao
Posted By: grout-scout

Re: lithium battery question - 02/20/22 09:32 PM

It is a good reason to go with the 100 ah cranking rated lithiums on the TM vs the 50’s; but more $$$ obviously.
Posted By: hopalong

Re: lithium battery question - 02/23/22 12:15 PM

Originally Posted by grout-scout
It is a good reason to go with the 100 ah cranking rated lithiums on the TM vs the 50’s; but more $$$ obviously.



got the deka agm grp 24 dual purpose for starting now, gonna save for the ionic 125ah start battery next.

out of my price range for the moment.
Posted By: SRitchey

Re: lithium battery question - 02/23/22 01:41 PM

I bought one of these for my boat but I carry it in my truck too. Works great! Used it on my sister's car and boom, it started right up.
https://smile.amazon.com/dp/B09N37C4LG?psc=1&ref=ppx_yo2_dt_b_product_details
Just noticed these were out of stock but they do have others available. Just tray to match the specs.

Originally Posted by hopalong
anyone here ever had to jump off li-on trolling motor battery to start the boat?

wondering if it is a good or bad idea due to amp draw to start.

Posted By: 4Weight

Re: lithium battery question - 02/23/22 08:58 PM

If you can afford lithium why not have a 2nd cranker in the boat?
Posted By: hopalong

Re: lithium battery question - 02/24/22 12:49 AM

Originally Posted by 4Weight
If you can afford lithium why not have a 2nd cranker in the boat?



taking the chance that the durability is what they advertise on the ionics, 11 yr. warranty.
next will be a 125 ah start battery, not worried about the deka I have now as it is a grp24 agm and only 3 yrs. old

weight loss is main reason to change out.
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