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Running batteries in parallel configuration
#10634657
02/21/15 05:40 AM
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Joined: Jul 2014
Posts: 4,340
Bobby Milam
OP
TFF Team Angler
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OP
TFF Team Angler
Joined: Jul 2014
Posts: 4,340 |
I bought a terrova 55# 12 volt. My boat is a 15' bass boat. I am running a series 27 marine battery. Unfortunately, there is only room for 1 trolling motor and 1 main battery in the back. I figure the terrova will eat up the battery using spot lock so I want to add a 2nd battery run in parallel with the other trolling motor battery. The easiest way would be to locate the new series 27 battery in a different part of the boat about 6 feet away. The only other option is to cut away fiberglass on the wall behind the back seats and find a way to make a floor for it to sit on and wedge it up in there somehow.
My question is, will I find any significant loss by having the two batteries about 6-8' apart? It might be doable cutting an access hole to fit under the seats but will be a lot of work and hard to access in the future. I plan on getting a 3 bank charger and attaching. I assume it won't affect that any.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10634888
02/21/15 01:25 PM
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Joined: Sep 2009
Posts: 1,220
Allan W
Extreme Angler
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Extreme Angler
Joined: Sep 2009
Posts: 1,220 |
Should be fine 6' away from each other
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10634932
02/21/15 01:58 PM
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Joined: Nov 2010
Posts: 5,099
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,099 |
I bought a terrova 55# 12 volt. My boat is a 15' bass boat. I am running a series 27 marine battery. Unfortunately, there is only room for 1 trolling motor and 1 main battery in the back. I figure the terrova will eat up the battery using spot lock so I want to add a 2nd battery run in parallel with the other trolling motor battery. The easiest way would be to locate the new series 27 battery in a different part of the boat about 6 feet away. The only other option is to cut away fiberglass on the wall behind the back seats and find a way to make a floor for it to sit on and wedge it up in there somehow.
My question is, will I find any significant loss by having the two batteries about 6-8' apart? It might be doable cutting an access hole to fit under the seats but will be a lot of work and hard to access in the future. I plan on getting a 3 bank charger and attaching. I assume it won't affect that any. You will only have two 12V batteries, you don't need a 3 bank charger.
Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3, Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10635277
02/21/15 04:30 PM
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Joined: Jul 2014
Posts: 4,340
Bobby Milam
OP
TFF Team Angler
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OP
TFF Team Angler
Joined: Jul 2014
Posts: 4,340 |
I will have 3 counting my cranking battery. Sometimes it will be low at the end of the day of I sit a lot running electronics.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10635329
02/21/15 05:09 PM
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Joined: Mar 2006
Posts: 2,765
basscaster46
Extreme Angler
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Extreme Angler
Joined: Mar 2006
Posts: 2,765 |
Friend told me you can run 2 6 volt batteries in series and get a better result
I got all day Iām retired
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10635359
02/21/15 05:38 PM
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Joined: Jul 2014
Posts: 4,340
Bobby Milam
OP
TFF Team Angler
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OP
TFF Team Angler
Joined: Jul 2014
Posts: 4,340 |
I already have a new trolling battery so I will stick with 12v for now but I will look into that and keep it in mind for future replacement.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10635369
02/21/15 05:41 PM
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Joined: Nov 2010
Posts: 5,099
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,099 |
I will have 3 counting my cranking battery. Sometimes it will be low at the end of the day of I sit a lot running electronics. Two 12 V batteries in parallel is a single 12V battery. Just more amps.
Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3, Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10635469
02/21/15 06:59 PM
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Joined: Jul 2014
Posts: 4,340
Bobby Milam
OP
TFF Team Angler
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OP
TFF Team Angler
Joined: Jul 2014
Posts: 4,340 |
I thought, and don't know much about it, that even though they were connected, they would charge more efficiently with each being connected separately. Thinking about what you are saying makes sense. The charger will charge until the bank is full. If a two bank works then that's better as it will cost less.
Looking at the boat today, there isn't enough room under there to really put a battery without removing flotation which I don't want to do.
Thanks for catching that for me.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10638516
02/23/15 01:43 AM
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Joined: Jun 2010
Posts: 837
CedarCreekWoody
Pro Angler
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Pro Angler
Joined: Jun 2010
Posts: 837 |
Six feet away isn't a problem, just be sure to use cable in the proper heavy Guage to carry the necessary amps. A three bank charger will recharge them faster, if that is a concern.
Woody Sea-Pro 170 CC 90 HP Mercury Saltwater 2014 Sun Tracker DLX 18 60 HP Mercury four stroke.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10641877
02/24/15 01:44 AM
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Joined: Jul 2014
Posts: 4,340
Bobby Milam
OP
TFF Team Angler
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OP
TFF Team Angler
Joined: Jul 2014
Posts: 4,340 |
I picked up a 10 amp 2 bank charger today. 5 amps per bank should be good enough for me. I went with Minn Kota. it was a little heavier than some but I liked the 3 year warranty.
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Re: Running batteries in parallel configuration
[Re: Bobby Milam]
#10652873
02/27/15 05:22 PM
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Joined: Jun 2010
Posts: 837
CedarCreekWoody
Pro Angler
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Pro Angler
Joined: Jun 2010
Posts: 837 |
I have the same charger and have been very pleased with it. It is designed to remain plugged in all the time, one of the few that shuts of completly once the battery is charged.
Woody Sea-Pro 170 CC 90 HP Mercury Saltwater 2014 Sun Tracker DLX 18 60 HP Mercury four stroke.
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