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the boat has a new battery, and alternater, but after it sits for a while, we have to jump start it get it running, what can I do to keep the battery charged?

2006-08-06 06:05:56 · 8 answers · asked by tamemiller 1 in Cars & Transportation Boats & Boating

8 answers

Something is using your battery when you don't want it to. How long does it sit for before going dead? A week, you can take the easy way out and install the battery switch and connect everything to it. If it goes dead overnight, you need to find the source of the draw on your battery.
Did you add anything to the boat lately? New c/d player, amps, lights etc?
Is your charging system working?

2006-08-06 06:15:02 · answer #1 · answered by Mercman 4 · 0 0

Have the Battery tested just to be sure it OK, sometimes not often you can get a bad one that not last long, warranty will help. Then when it started get a Voltmeter set on MORE than 12 volts, I think the next setting is 50 volts set it there VDC. Should read about 13-15 volts if the alternator charging correct. This eliminates simple things. Now if we know this good let's look for what drain the Battery! Disconnect all your wires from battery and with your Voltmeter set to Ohms try to find your wire pair for various circuits and OHM them. You are looking for a Short Circuit!!!! When you touch the two Meter leads together you will see what you look for on a reading. Most times a Short develops with a bad Bilge Pump, Blower Motor or Guage in the Dash. Also the Ignition Switch may not work correct and it leaving the Ignition on draining the Battery. It can be checked looking under dash at the connections and using a simple test light to see if volt go to the "Ign. wire" when the key is off. If you know how to use the Meter and Test light you should be able to find your battery drain. If not you can disconnect one side of the battery when not using and then just connect the wires when you ready, but, this not the better way.

2006-08-06 06:21:47 · answer #2 · answered by Snaglefritz 7 · 0 0

you got drain some where ,if the boat is in the water ,check pumping ,time and duration ,make sure you have no radios with station memories or clocks,Last thing ,turn everything off you can find, un hook the positive side of the battery,touch it back to the battery,you get Sparks something is on some where.If you get no sparks you might have a bad Battery,dead cell wont keep a charge

2006-08-09 02:36:29 · answer #3 · answered by Bushit 4 · 0 0

sounds like a bad cell in the battery, test with a hydrometer $3 at any auto shop. Pop off the battery water fill tops, check ea. cell (6)w/the hydrometer. The #'s are not important on the hydrometer, as long as they are almost the same, if one cell has much lower #'s on the hydrometer, you will have a bad cell on the battery, and will need to replace the battery. This is a simple test, not complicated, easy to do (My Grandmother can do it).

2006-08-07 00:22:21 · answer #4 · answered by Anonymous · 0 0

Install a batterey switch and get a nice low amp trickle charger on a timer.
Inspect , Repair, or Replace cables from batt and alt

2006-08-06 06:09:50 · answer #5 · answered by captbryguy 5 · 0 0

make sure that you turn off the radio and lights. find the short and fix it. or disconnect the battery when not in use.

2006-08-06 06:12:27 · answer #6 · answered by justnotright 4 · 0 0

Could be your automatic bilge coming on when its not supposed to or its left uncovered in the rain and comes on to pump water. Sticky float on bilge.

2006-08-06 09:30:23 · answer #7 · answered by Anonymous · 0 0

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2016-09-28 23:21:31 · answer #8 · answered by banowski 4 · 0 0

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