leaving sounder on while drifting

hey guys, the otherday when i was out fishing i left my sounder/gps on while i did about a 20 min drift, when i went to restart the merc 140 she didnt want to go. i have a duel battery system with brand new century deep cycle batteries. i left both batteries on because i knew it would only be a short drift. the sounder is an 11" colour lowrance gps combo

do u think i have a problem with my batteries or is this normal to drain batteries that quick?


brenz's picture

Posts: 2182

Date Joined: 15/06/06

battery problem mate . i can

Sun, 2011-03-20 14:50

battery problem mate . i can run my humminbird sounder and electric motor for 3 hours on a single 70 a/ph battery and still crank a yamm 100 4st over no probs

Posts: 9358

Date Joined: 21/02/08

Something isn't charging

Sun, 2011-03-20 14:51

Something isn't charging then! Thats too fast, even with a 1kw tranny.

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Posts: 169

Date Joined: 11/03/11

thats draining the batterys

Sun, 2011-03-20 15:14

thats draining the batterys way to fast mate i have left mine on when anchored up for atleast 3hours  and still starts the boat with no problem what so ever

Posts: 37

Date Joined: 08/02/11

yeah cheers guys, maybe the

Sun, 2011-03-20 15:22

yeah cheers guys, maybe the new batteries i got are duds or they left a terminal loose or something

allrounder's picture

Posts: 1853

Date Joined: 10/11/08

Are they just deep cycle or do they have a good crank rating?

Sun, 2011-03-20 15:38

 They may not have enough starting punch

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So tell me have you got your info from years on the water or hours on the internet?

  • was sponsored by Atomic Lures and Shimano but they dropped me.Now sponsored by Fog Dog(The best fish coating out there) and raider lures.

Posts: 37

Date Joined: 08/02/11

yeah not sure exactly, will

Sun, 2011-03-20 15:50

yeah not sure exactly, will check them over when i get home next week, they are fairly big girls, would expect at least above the 500cca mark. i never had any real issues with my last batteries, just replaced them because they were 3 years old and i had got my moneys worth out of them

allrounder's picture

Posts: 1853

Date Joined: 10/11/08

If they have a crank rating i would be looking at the install si

Sun, 2011-03-20 16:21

 I just put a combo in the truck and no way will that go flat over a few hours of running the stereo or the odd time you leave the lights on.

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So tell me have you got your info from years on the water or hours on the internet?

  • was sponsored by Atomic Lures and Shimano but they dropped me.Now sponsored by Fog Dog(The best fish coating out there) and raider lures.

Posts: 16

Date Joined: 01/01/70

CCA & VSR

Sun, 2011-03-20 19:22

Jez, if fully charged and you have say 700cca it should be sweet but theres obviously an issue. Once sorted i'd look at putting on a VSR setup on your dual batterys for recharging & maintenence......thats what I've done on my two boats and

AllBoatsChandlery's picture

Posts: 118

Date Joined: 17/07/10

Def batteries

Mon, 2011-03-21 22:39

yep your batteries are cactus to say, the lowrance sounder only draws 2-3 amps at max. something else you must have had on at the same time or during the drift.bilge pump, stereo, maybe some lights that u may not have noticed. Or the batteries just ran out of spark. What you should get is a vsr or when you leave the ramp switch it to both, once your there and wanna do a drift switch to the house battery(1 or2) and use that atleast when your ready to go and start your motor you know the other has plenty to get you started. 

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"There's no business like boat business"

biggerfish's picture

Posts: 669

Date Joined: 02/03/09

If u have your batteries set

Tue, 2011-03-22 08:48

If u have your batteries set to both or ( dual) and one battery is flat the flat batterie will drain the charged batterie until they ate both equally charged this could mean u go from having one fully charged battery and one flat battery to having two batteries that are good for f all. I always leave my terminal on either 1 or 2 never on both unless both batteries are nearlydead and u need to use both together to start the donk hasn't happened yet (touch wood)

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Play hard fish harder

sea-kem's picture

Posts: 14991

Date Joined: 30/11/09

Yep I do the same usually run

Tue, 2011-03-22 09:12

Yep I do the same usually run out on 1 and switch over on the way back in to give both a charge and work them.

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Love the West!