To jump modern 250's, what's the minimum size jumper cables that would work?
To jump modern 250's, what's the minimum size jumper cables that would work?
Can't say about the "modern 250's" But I'm not sure they make one big enough to jump this 300XS..
Maybe hand built from welding cable.
10 ga is to light, 6 is ok, 4 is good for 10' or less and 2 is good for over 10'. The Harbor Freight heavy duty are ok. I think they are a 6 ga. Here's an "Old Tow Truck Trick" - use TWO sets of jumpers even on one battery to one battery and it will work much better !!
Ranger Boats / Mercury Motors
G Loomis Rods / Shimano Reels
Raymarine / MinnKota Ultrex
Garmin / Live Scope Plus
Pepper Jigs / Robo Worms
Troll Bridge / V-T2 Vents
This is what I prefer. This model may not be large enough for your engine but they make them for Diesel engines, should be big enough.
I try to drive as if my 16 year old Grandson is following me
Speak as if he is listening and act as if he is watching
I bought a NOCO GB40-- just in case !!
It also failed to start this 300XS on a cold morning.
I have since realized why, Mercury says it needs a min. of 1000 MCA and only certain batteries meet "THERE" requirements..
If you are jumping from a trolling battery you can make a set 3 to 4ft and get by with much smaller gauge but I usually still use a minimum of 6awg on a 4ft set but 8awg would work
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I agree with Bill 100% on this one. I have an Anker portable battery/jumpstarter and I have jumped multiple trucks when their old nasty 16’ jumper cables did nothing.
I walk over with this tiny little Anker, offer to help...they usually snicker, I hook it up, wait 5 seconds and I have yet for it to not work first try.
Every time the owner or the person with the cables takes a picture of it so they can get one. It’s the best $70 I’ve ever spent....except for fishing gear!
2006 Triton SP-185, 2006 Evinrude Etec 90, PowerTech NRS3, Garmin Echomap Plus 73CV & 93SV
"keep your blood thin,you will live longer"
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
I'm kind of looking forward to the next time someone asks for a jump. I just built a set from #4 welding cable. Just under 50'. I can be parked behind you, and run the cable up to your battery.
Ranger Z-20, Yamaha F225.
2011 Skeeter ZX225
225 Yamaha HPDI Series 2
Minn Kota Ultrex 112 52"
Console: HDS 16 Carbon
Bow: HDS 12 Carbon, Solix 12 G2, Mega 360, Garmin 106 SV, LVS 34
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
I got the 16' jumper cables from Harbor Freight, 6 gauge. I got the longer cables in case I needed to help out another boater in need. I believe they were $32 with a coupon.
Noco gb40
Last edited by Buck456; 09-28-2018 at 11:08 AM.
I see what what you're saying. It would also make a difference if it is being jumped off just a battery or from a running boat/car. If the dead battery was able to accept a charge you could hook it up with a 4 gauge jumper cable and charge it up awhile and then see if it would start but I agree with that length of cable bigger than 4 gauge would be preferred.