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Amp Hours (Ah) for a full day on the water.

2693 Views 55 Replies 16 Participants Last post by  mboy, 
a1flyfishr
A question for the Elec reel users. What ah do you find best for a day of fishing without a charge being needed. I know depth and load play a big part so an overall estimate.
Trying to decide on an ah size. Is 20ah good or is 50ah or higher needed for a day of fishing. Trying to keep the size and weight down but rather have battery life.

Benny
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a1flyfishr
Waiting to hear back from these two companies. Then when reel arrives I’ll decide on which.

Benny

12 volt 45AH Lithium Battery

Buy 12 Volt 50Ah Lithium Battery | LithiumHub Ionic
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a1flyfishr
Gonefishings said:
I have the same battery it’s lasted more than 12hrs of jigging without recharged 14000mah. Used it on 36hrs trip and 56hrs trip..
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Are you saying you have the same battery as Kim? So a 14Ah battery lasts you a full 12hr day with jigging.

Benny
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a1flyfishr
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Think it’s narrowed down to this company. M-Tech has great reviews and customers are saying a longer life between charges than my other choice Ionic. Although I like the Bluetooth battery check capabilities from the ionic app, longer life is the goal.
Now the decision is one 45Ah or two 20Ah so I’ll always have one on charge and the smaller size makes it easier to store in a waterproof box.

Benny
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a1flyfishr
Kim said:
Benny let us know how it all shakes out. The reel brand batteries are cased and easy to carry but you would need two for all day.
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The reel batteries are hard to find and are higher priced than an equal Ah lithium. I think I’m leaning on the M-Tech batteries not sure yet on the 45Ah or higher. But either way I’m working on a waterproof box to store and carry.

Benny
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a1flyfishr
Went with a 45Ah battery.
It’s overall size is 9”x 8”x 5.5” and weighs 14.5#.
Hope to be rigging a watertight case with connections on the outside for reel wire clamps.

Benny
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a1flyfishr
Kim said:
Benny if you are going to build a W/T box for it, you might as well add a fuse/breaker and a receptacle so you have circuit protection and ease of connection.
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Yes! My thoughts exactly.
Two great minds think alike.

Benny
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a1flyfishr
Kim said:
Benny if you are going to build a W/T box for it, you might as well add a fuse/breaker and a receptacle so you have circuit protection and ease of connection.
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Hey Kim do you have a fuse on your battery and if so, what size fuse is installed. I ordered a fused line and it comes with 7amp fuses. Think 7amp will be ok?

Benny
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a1flyfishr
Anyone have a fuse between their battery and reel. Trying to find out what size fuse I should use.

Benny
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a1flyfishr
Thanks Jimmy, I emailed shimano asking the max draw on the MD3000 but no reply yet. The wire on the fuse holder is 10 gauge.

Benny
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a1flyfishr
Thanks Tokyo! Yes it will be mostly stationary on a private 6 pack charter. If I have to one of my buddies can assist with the battery.

Benny
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a1flyfishr
Great idea Bird! I have a bunch of batteries and chargers laying around. I’ll see if I can figure out something.

Benny
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a1flyfishr
Kim said:
Benny the factory packs its internal, but if I was to make a power supply, I'd probably fuse at 2.5 amp to start with. Having a load on rod would be big help, then if fuse blows, try 3a etc. you want the lowest rated fuse at full load.
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I can see some load tests from my deck in the future. All the reading I’ve been doing say a fuse of 20a or 30a is fine. I feel that’s way over what I would want it to trip at.

Benny
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a1flyfishr
Found this searching around. It seems the reel will use 8.3 amps if drawing 100 watts from a 12V battery?
So I can say a 7 amp fuse would be fine.

Benny

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a1flyfishr
Haven’t heard anything from Shimano via phone and email. Does anyone use external lithium batteries with their Elec reels without fuses. Thinking of making the battery box without a fuse then adding it in if needed. I just hate leaving on hold.

Benny
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a1flyfishr
jshorty said:
Benny,
I don't use a fuse with mine.
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Perfect! Thanks Joe, So if I don’t hear anything when everything is delivered I’m starting the build. If I need to install a fuse I’ll do it later.

Benny
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a1flyfishr
Kim said:
Benny, I checked the boat reel receptacles, and the breakers 15A and they have never tripped with 2 receptacles to a breaker.
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Thanks Kim! That definitely gives me an idea of what fuse size will work. So, I’m sure a 10a would be fine or maybe the 7a that came with the fuse holder.

Benny
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a1flyfishr
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My battery, are waterproof box are complete.
Total box weight with 45Ah battery is 17lb 11oz not the best for following a fish around a boat but not that heavy either. The weight inside is balanced and the recessed handle is super comfortable so it doesn’t feel like 17lb. Decided a fuse wasn’t necessary as the reels have fuses installed, but still have plenty of room if needed. Box also has enough room inside to store reel cables. Made reel connections to retract for transportation with a rubber cap on the ends
Battery brand is MTech
Box is Pelican vault ammo box
Positive and negative stickers by RCSwag.com
All the extra hardware was purchased on Amazon, rods, wire, and waterproof fittings.

Benny

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a1flyfishr
mboy said:
I am going to be using my G300j for Slow Pitch jigging, so I will prob wind up with one of the 17000mah ones so I can move around with it. Also have a small 2.5lb LifePo4 12ah as well. Have not used yet.
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Let me know how much time you get with the 17k mah when you get to use it.

Benny
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a1flyfishr
mboy said:
Will do. It should arrive today. Hopefully be using it Sunday on a SWORDFISH SPJ exploration trip on the reward out of Miami!
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Man do I envy you right now!
Good Luck

Benny
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