jump box for back-up starting

vagabondmo

Cadet
Joined
Sep 14, 2006
Messages
6
Is a jump box adequate as a back-up poer source for starting or is a second battery best.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: jump box for back-up starting

Generally yes. But since we don't have a clue how large a motor you have we can't say for certain. It all depends on the size of the motor and size of the battery in the jump box.
 

Bob_VT

Moderator & Unofficial iBoats Historian
Staff member
Joined
May 19, 2001
Messages
26,064
Re: jump box for back-up starting

For the money you spend on a quality jump pack you can get a better marine battery. Yes, they do work.
 

vagabondmo

Cadet
Joined
Sep 14, 2006
Messages
6
Re: jump box for back-up starting

Silvertip said:
Generally yes. But since we don't have a clue how large a motor you have we can't say for certain. It all depends on the size of the motor and size of the battery in the jump box.
 

vagabondmo

Cadet
Joined
Sep 14, 2006
Messages
6
Re: jump box for back-up starting

The motor is a 1989 150hp v6. The present cranking battery is 750 cold cranking amps
 

Mike722

Petty Officer 1st Class
Joined
Nov 7, 2005
Messages
370
Re: jump box for back-up starting

A jump box will not always work if hooked to a defective or low battery. The jump box sents power to the battery instead of the starter. Sometimes you have to disconnect the main battery before using the jump box.

If you are going to use the jump box for other things besides the boat they are nice to have. If you are going to only use it on the boat, a second battery would be better.

Mike
 
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