merc 5.7 alpha 1 how many batterys???

[delsol]

i will get my boat out of the shop this week. rebuit motor. do you have to have 2 batterys. if so what should i buy. is 2 batterys a must...
bob

 

[delsol]

Re: merc 5.7 alpha 1 how many batterys???

sorry its a 5.7 with a alpha one.
bob

 

[Haut Medoc]

Re: merc 5.7 alpha 1 how many batterys???

Well, that is good news!.......
You can get away with one battery, but it is wise to have two.....
I would get one starting battery & one deep cycle range......
The bigger the better, IMO....
I would not go below 700 CCA or so.......
The manual will have your min. size.....
Just remember if the one battery gets run down for any reason, there is no rolling downhill & popping the clutch.......​

 

[vipzach]

Re: merc 5.7 alpha 1 how many batterys???

Two batteries is not required. Although it could be a good idea. It really depends on your needs. Are you running a trolling motor or a stereo for long periods?

 

[paultech6]

Re: merc 5.7 alpha 1 how many batterys???

Use two batterys with a switch. Buy two start batteries and a perko 3 way switch.Find a place to mount switch then wire one battery to one on switch then second battery to number two on switch. Then take a battery wire from the common on the switch to the starter. Your done.
When your out and wanna drop anchor and run accessories switch to number two.When your ready to go see if she starts if battery goes dead switch to number one and start the boat . Once running switch it to the all position and it will charge back up your number two battery.
If you leave boat in the water and shut switch off make sure your bilge pump is still has power. If not thats another simple issue you can do yourself
Dont use deep cycle batteries as a start battery they are not designed for a heavy amp draw that a engine starter puts on them

 

[delsol]

Re: merc 5.7 alpha 1 how many batterys???

just cruising in the local river. i guess i will shoot for 2 batterys. haut...the boat should be ready at the end of the week. i got as posted before the shop from hell. i was going to pull the boat out friday with motor installed but not mounted..but the owner convince me that he has a certified new guy starting today who seen my boat and my boat will be his to finish and make it complete as he says he's good. verses paying the arugued debated bill and getting my bolts in a bucket..waited this long . what 5 more days. by thursday if it dont look good with no warning i am pulling boat like real poor said no notice. wed. i will drive by and hope for progress.
bob/philly