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Why carry a jump starter instead of a spare battery?

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Why carry a jump starter instead of a spare battery?

Old 09-10-2020, 11:24 AM
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Default Why carry a jump starter instead of a spare battery?

I have a couple of jump starters at home that I use for stuff around the house but for the boat I carry a spare battery in the cuddy. Other than the weight why would you choose to carry a jump starter -vs- spare battery? With the jump starter you only get a couple of cranks before it goes dead and if it's not fully charged you may not get any cranks.

Just curious why you would choose one over the other?
Old 09-10-2020, 11:28 AM
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You spelled it out. You get a jump when you may need a full battery.
Old 09-10-2020, 11:34 AM
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Why would anyone carry a spare battery when they could get a stealth charging system? ( I guess it costs a little more)
Old 09-10-2020, 11:34 AM
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I know when I ran my CC, I carried a jump start on overnight trips, (boat had a two battery system) as a back up jumper and to run lights and electronics at night. But off the top of my head
-weight; my jump unit was lighter than my battery.
-storage: easier to store and carry a jump start unit than a bulky battery. My jump start had a non skid base and easily stored. Battery needs a hold down in most cases on a boat.
-maintenance: you'd need to keep a spare battery on a trickle charge during it's life, vs. plug in/quick charge and go on the jump start unit. Jump starters are big re-chargeable batteries right?
-longevity: jump starter as a rule will last longer than the average 3 year life span of a battery, (especially if you don't charge the battery). My old jump starter is 10 years old and still viable/useful.
Old 09-10-2020, 11:47 AM
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Originally Posted by cobraarvey View Post
I know when I ran my CC, I carried a jump start on overnight trips, (boat had a two battery system) as a back up jumper and to run lights and electronics at night. But off the top of my head
-weight; my jump unit was lighter than my battery.
-storage: easier to store and carry a jump start unit than a bulky battery. My jump start had a non skid base and easily stored. Battery needs a hold down in most cases on a boat.
-maintenance: you'd need to keep a spare battery on a trickle charge during it's life, vs. plug in/quick charge and go on the jump start unit. Jump starters are big re-chargeable batteries right?
-longevity: jump starter as a rule will last longer than the average 3 year life span of a battery, (especially if you don't charge the battery). My old jump starter is 10 years old and still viable/useful.
Agree with all of this. Have a high quality small jump box that stays charged very well and can start multiple times.
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Old 09-10-2020, 11:51 AM
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Old 09-10-2020, 11:52 AM
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I have a jumpbox rated for a large diesel. I can't imagine carrying an extra battery around. If I was going to do that I would wire it in the system so it's always charged.
Old 09-10-2020, 12:10 PM
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I have a NOCO GB150 that does a real good job. It’s started my 6.7 diesel with it and it hold a charge
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Old 09-10-2020, 12:13 PM
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assuming the battery went dead from running electronics a single jump should be all you need to get back to the dock

if you are jumping your boat every time you start it well you should reevaluate that habit lol
Old 09-10-2020, 12:16 PM
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Why carry a "spare" battery and not just connect it into the system as another house battery so it at least stays charged and you don't have to use jumper cables if your starting battery goes dead. Just flip the switch to combine and you're back in business.
Old 09-10-2020, 12:18 PM
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Why would you need either or spend your money on either?
If your battery is weak do the right thing and buy a replacement that way you won't have to piss around trying to jump start a dead battery every time you need it.
Old 09-10-2020, 12:21 PM
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Also, don't batteries go boom? Would not want an extra battery sitting in my cuddy cabin, (is it stored in a battery box?).
Old 09-10-2020, 12:23 PM
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Originally Posted by Garett View Post
Why would you need either or spend your money on either?
If your battery is weak do the right thing and buy a replacement that way you won't have to piss around trying to jump start a dead battery every time you need it.
Batteries can fail suddenly and sometimes fairly new so having a backup is never a bad idea. Whether it is 2 batteries or a jump start that you can keep in the truck when you are not boating is up to you.
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Old 09-10-2020, 12:32 PM
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everyone should have 8 batteries
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Old 09-10-2020, 12:40 PM
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Originally Posted by gfretwell View Post
Batteries can fail suddenly and sometimes fairly new so having a backup is never a bad idea. Whether it is 2 batteries or a jump start that you can keep in the truck when you are not boating is up to you.
I've never bought cheap batteries or no name batteries so I've never experienced a good battery just going bad all of a sudden.

I've got three batteries on my boat, 2 6v golf cart house batteries, 1 cranking battery and switching between the two or both at once. So I can not imagine needing a jumper or a spare battery just in case.

And I do Not milk my batteries to the point I have to fart around with jumping dead batteries, to me that is just irresponsible, especially out on the water..
Old 09-10-2020, 12:44 PM
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Originally Posted by Garett View Post
Why would you need either or spend your money on either?
If your battery is weak do the right thing and buy a replacement that way you won't have to piss around trying to jump start a dead battery every time you need it.
Who said I needed one? I change my batteries out every 3 years but I also carry a full sized spare battery. I've never had to use the spare battery either but I have one. I would trust a full battery more than a jump pack battery which is why I keep one on the boat.

What do you keep in your boat?
Old 09-10-2020, 12:44 PM
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Originally Posted by Raybo Marine NY View Post
everyone should have 8 batteries

Split coffee, your killing me. Now everyone knows you need 9.
Old 09-10-2020, 12:49 PM
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Originally Posted by MilesExpress View Post
Split coffee, your killing me. Now everyone knows you need 9.
That's assuming that everyone buys cheap batteries....if you have expensive batteries you only need 6.
Old 09-10-2020, 12:50 PM
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Most saltwater boats already have at least 1 backup battery. Thats why the battery switches say #1, #2, or both.

If your boat is small enough to only have 1 house/start battery then the biggest assumption is weight.

My flats boat has 1 start, 3 trolling. I carry a jump pack in case the starting battery fails. I can also rig power off the TM batteries but a jump pack is much easier. Weight is so important i'm working on getting lithium TM batteries to save weight.

The jump pack is also part of my ditch bag. I can power my phone, has a small light, etc...
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Old 09-10-2020, 12:53 PM
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I carry both. The weight of 1 extra battery on the boat is negligible unless it is a small skiff. The way I see it, if the starter battery dies, I try the jump. If that fails I have a battery.

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