Originally Posted by Sceptre
also whats the difference between marine battery and car battery?
Marine batteries need to have lots capacity and lots a cranking amps
.Find out the size recomended for your motor and go up in size .
I always fit a HD cut off switch in the main line
between the battery and the motor ,so when its off eveything is off
. Its always in a place thats easy to see and to reach when needed to !!.
When things are damp theres always a small amount of power loss throught the dampness where ever, at the motor or the controls or instruments or where ever .
Radios, sounders ,lights ,and what ever else all draw current and if you've been sitting with everything running for hours fishing or just lazing in the sun come time to turn the key and head for home the motor wont start !!! .
Car batteries dont have much capacity and are mostly good for short bursts for a short time !!.
The new marine battries are sealed
so dosent mater if they fall over there now spillage of acid . ONE battery for your motor and a second for the toys , motor battery always has priority
and dosent get used for the gadgets , But the gadgets battery can be connected to the start battery in a emergancy , Its all in the switching and how its wired up !! check with a marine electrician !! Think safety and live to go boating another day !!
Dont forget to mount you battery in a place where its easy to get to , will stay dry , and in a proper box thats vented !keep all the terminals clean and well greased to stop corrosion and shorting .
Moisture in any form and electricity dont mix to well !!