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Author Topic:   Battery and Charger
cban posted 08-15-2012 11:37 AM ET (US)   Profile for cban   Send Email to cban  
I am finally putting my 1960 13 foot Sport back together after making repairs to the hull and painting. The 1963 35 horsepower Mercury motor has been professionally overhauled and tested and is back on the boat. One thing that I found odd is that the motor is an electric start (or manual with a pull string) but it doesn't have an alternator or other device to recharge the battery.

Any recommendations for a new batter and charger setup?

Thanks

jimh posted 08-15-2012 01:31 PM ET (US)     Profile for jimh  Send Email to jimh     
The most convenient method of charging would be to install a 120-VAC-operated Battery Charger in the boat. Look for a charger that is encapsulated so that water intrusion will not be a problem. If you can let the charger run overnight, a charger with 5-Ampere output should be enough to restore most batteries to full charge.

For a battery look for a smaller form factor and an AGM battery. It should not take too much current to crank over a 50-year-old 35-HP outboard.

cban posted 08-15-2012 04:08 PM ET (US)     Profile for cban  Send Email to cban     
Thanks for the response. I thought that might be the route to take but I'm not very familiar with electrical systems and thought I might be missing something.
jimh posted 08-15-2012 08:16 PM ET (US)     Profile for jimh  Send Email to jimh     
Installing a charger in the boat is the way to go in your situation because your need to recharge the battery is going to be chronic, continual, and constant. People who occasionally might want to recharge the boat battery from a 120-VAC source can tolerate lugging the charger over to the boat and hooking it up. You will need to use the charger all the time. Essentially, any day you run the boat you will need to be sure you start with a fully-charged battery, and at the end of the day you will need to recharge the battery. If you want to mess around every time you use the boat lugging down a charger, connecting the charger, and charging the battery, you can use an external charger. But if you want a convenient solution, install the charger on the boat, wire it permanently to the battery, and you will always be ready to charge the battery. A small charger should be less than $100. It will give you $100 worth of value in the first week of use.

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