Jump Start devices

[jbinbi]

I looked for this in previous threads, and to my surprise, did not find any...

So I have been looking at keeping one of those portable jump start devices on board. Here is a small but powerful one, https://www.amazon.com/CHARGE-PP15-1.../dp/B00U3ZBTOI

Of course, I could go to the more expensive larger ones that have 2 or 3x the output.

My question is twofold. If my start battery is dead, will one of these work, and if so, what size do I need for a yanmar 29hp. I have a house bank separate from the starts, so I would just put this on the start battery.

Thanks.

[john61ct]

https://www.carid.com/oem/12v-18-amp...mpn-24455.html

Can find it cheaper

[ranger58sb]

Originally Posted by jbinbi

My question is twofold. If my start battery is dead, will one of these work, and if so, what size do I need for a yanmar 29hp. I have a house bank separate from the starts, so I would just put this on the start battery.

Look up minimum required cranking amps in the specs for your engine. You'll probably see CCA (cold cranking amps at 0°F and MCA at 32°F...

Then compare minimum engine requirements with jump start products.

Another option might be a simple pair of jumper cables, to be used from your house batteries to your start battery. (Wouldn't recommend that for folks with a gas boat, though, due to spark potential.)

-Chris

[john61ct]

Plenty of isolator/combiner ACR/VSR devices have a "self-jump" momentary switch.

Not to mention the classic 1/2/both switch, does the same thing.