24v battery systems

[Schloogs]

Keep in mind that I am somewhat new at this but when setting up a 24v trolling system does it matter if the 2 batteries are the same batteries? I purchase a new (used) boat and it came with a 24v bow troller. I currently have the starting battery and 1 other battery that I used for a 12v transom mount troller on my old boat. I am looking to pick up another battery but I am not sure if I need to get the same battery that I currently have?

Another question I have is, can I run both the 24v and 12v trollers off of the same 2 batteries?

[Giant_Jackpot]

For best performance you should have matched batteries in a 24 volt system. If the batteries are mismatched your performance will be only as good as the weakest battery (basically). Kind of like the weak link in a chain…..

[Whoaru99]

Quote:

---

Another question I have is, can I run both the 24v and 12v trollers off of the same 2 batteries?

---

Yes, and no.

The two batteries will be connected in series to get 24V. Your 24-volt motor will connect to this series arrangement of both batteries.

Your 12-volt motor can connect to either ONE of the two batteries, but not to both batteries at the same time.

[Schloogs]

Makes sense

[Schloogs]

Thanks, thats what I needed to know.

[Jeremy airjer W]

Quote:

---

Your 12-volt motor can connect to either ONE of the two batteries, but not to both batteries at the same time.

---

Unless you rewire the batteries into a parrellel cicuit.

[Schloogs]

Quote:

---

Unless you rewire the batteries into a parrellel cicuit.

---

Could you elaborate on this? Is there any benefit in running a parrellel circuit?

[Whoaru99]

Sure, if you rewire.

But, you can't have the same two batteries in a parallel 12-volt combination and a series 24-volt combination at the same time. That's what I thought the OP was asking about - can he use both motors at the same time, from the same set of batteries, without rewiring.

I suppose there is some type of switching arrangment one could concoct that could go back and forth with the flip of a switch, but you still couldn't use both batteries in parallel and series at the same time, afaik.

[Whoaru99]

Quote:

---

Quote:

---

Unless you rewire the batteries into a parrellel cicuit.

---

Could you elaborate on this? Is there any benefit in running a parrellel circuit?

---

Not really. Actually, you are better off running a 24-volt system if possible. It will be slighly more efficient, IMO, than a 12-volt system because of more tolerance for slight voltage drop. Also, you can use thinner wires to carry the same power vs 12 volts because twice the voltage requires only 1/2 the current to deliver the same amount of power (Watts).