Visit our Popular Forums

moseriw · 25-12-2016, 02:22

Some discuss 2V Batteries. Why? As for my understanding 2V is one cell on 12V Batteries. So do 2V Batteries have only one cell? And why is it better to have 6x2V instead of on 12V Accu?

mitiempo · 25-12-2016, 02:30

Quote:

Originally Posted by moseriw

Some discuss 2V Batteries. Why? As for my understanding 2V is one cell on 12V Batteries. So do 2V Batteries have only one cell? And why is it better to have 6x2V instead of on 12V Accu?

2 volt cells are traction batteries. Very heavily built and used in industry. They would outlast any conventional battery. Here is a link to some examples:
Deep Cycle Battery Catalogue & Specs | Rolls Battery

1124 AH to 4860 AH. This eliminates the need to parallel batteries. Some in the industry (Ample Power for one) suggest parallel batteries should be avoided.

Here is the spec sheet on the smallest 1124 AH battery: http://rollsbattery.com/wp-content/u...ies/S-1450.pdf

moseriw · 25-12-2016, 02:42

Tks I have a look at it during hulidays

masonc · 25-12-2016, 02:45

Always avoid parallel batteries. After a while the strings will have different inferences and one will charge more than the other(s).
All FLA battery cells are 2V, so 2V batteries are one cell.
The advantages are manageable size and ability to change one cell if faulty.

My IND17 batteries run my house weigh about 500lb each, we didn't so much put then in a battery box as build the box around them.

TeddyDiver · 25-12-2016, 03:01

Surrettes are a bit too big for most boat owners. Look forklift batteries

even more common than golfcart batteries

BR Teddy

hellosailor · 25-12-2016, 10:39

"So do 2V Batteries have only one cell?" When you have a battery of cannon, you have at least two of them. Probably more than two if you want to repel an enemy. This is the same word and the same meaning for voltaic cells. Two or more cells, and you have a battery. So when your flashlight needs two AA cells or two D cells, you need CELLS not BATTERIES. This is what happens in a sloppy culture with poor technical education and no "Academie Anglais" to patrol our slang. On the other hand, if you have a 9-volt transistor battery? Thta's a legitimate battery, there are six blocks (old style) or sticks (new style) of cells inside the metal case. And that pint-can-size 6-volt "lantern battery" really has four "F" cells inside, although cheapskates build those now with four "D" cells to cut the cost. Which begs the question, can you have a clown car if there are no clowns left in the glove box? :-)

Suijin · 25-12-2016, 11:00

Quote:

Originally Posted by Clipper4730

Hey yall after an incredible run of ten years our house bank is finally giving up the ghost

We didn't know exactly the age of the house bank when we bought the boat but I just heard back from previous owner who said he never replaced the house bank and he bought the boat in 2006. So super excited they lasted as long as they did now we are shopping for a new bank. Just curious as to what your favorite manufacturers are. As always balancing cost, performance and economy. Thinking of a 600amp/hr and bank as that is what we have now and seems to have served us well.

Thanks in advance.

If you really got 16 years out of your bank you would be well advised to replace the batteries with exactly what you have right now. You'll hear (and have heard) all sorts of advice about golf cart batt's, ACRs, etc but the simple fact is that what you have must be exceptionally well suited to your energy management routine. Sounds like you have enough capacity and that your discharge/charge habits have lead to good management and long battery life.

The only circumstance in which I'd monkey with that system is if you foresee your energy needs and habits changing in future. If that's the case then you need to forecast those needs and design a system to suit.

TeddyDiver · 25-12-2016, 11:49

Quote:

Originally Posted by hellosailor

"So do 2V Batteries have only one cell?" When you have a battery of cannon, you have at least two of them. Probably more than two if you want to repel an enemy. This is the same word and the same meaning for voltaic cells. Two or more cells, and you have a battery. So when your flashlight needs two AA cells or two D cells, you need CELLS not BATTERIES. This is what happens in a sloppy culture with poor technical education and no "Academie Anglais" to patrol our slang. On the other hand, if you have a 9-volt transistor battery? Thta's a legitimate battery, there are six blocks (old style) or sticks (new style) of cells inside the metal case. And that pint-can-size 6-volt "lantern battery" really has four "F" cells inside, although cheapskates build those now with four "D" cells to cut the cost. Which begs the question, can you have a clown car if there are no clowns left in the glove box? :-)

https://en.m.wikipedia.org/wiki/Battery_(electricity) Don't mix artillery into this

mitiempo · 25-12-2016, 12:04

Quote:

Originally Posted by hellosailor

"So do 2V Batteries have only one cell?" When you have a battery of cannon, you have at least two of them. Probably more than two if you want to repel an enemy. This is the same word and the same meaning for voltaic cells. Two or more cells, and you have a battery. So when your flashlight needs two AA cells or two D cells, you need CELLS not BATTERIES. This is what happens in a sloppy culture with poor technical education and no "Academie Anglais" to patrol our slang. On the other hand, if you have a 9-volt transistor battery? Thta's a legitimate battery, there are six blocks (old style) or sticks (new style) of cells inside the metal case. And that pint-can-size 6-volt "lantern battery" really has four "F" cells inside, although cheapskates build those now with four "D" cells to cut the cost. Which begs the question, can you have a clown car if there are no clowns left in the glove box? :-)

A single 2 volt cell is a 2 volt battery.

mitiempo · 25-12-2016, 12:06

Quote:

Originally Posted by TeddyDiver

Surrettes are a bit too big for most boat owners. Look forklift batteries

even more common than golfcart batteries

BR Teddy

Rolls/Surrette makes smaller batteries as well. They even make group 27 batteries. Probably the best Fla batteries you can buy.

**StuM** · 25-12-2016, 16:19

Quote:

Originally Posted by hellosailor

"So do 2V Batteries have only one cell?" When you have a battery of cannon, you have at least two of them. Probably more than two if you want to repel an enemy. This is the same word and the same meaning for voltaic cells. Two or more cells, and you have a battery. So when your flashlight needs two AA cells or two D cells, you need CELLS not BATTERIES. This is what happens in a sloppy culture with poor technical education and no "Academie Anglais" to patrol our slang. On the other hand, if you have a 9-volt transistor battery? Thta's a legitimate battery, there are six blocks (old style) or sticks (new style) of cells inside the metal case. And that pint-can-size 6-volt "lantern battery" really has four "F" cells inside, although cheapskates build those now with four "D" cells to cut the cost. Which begs the question, can you have a clown car if there are no clowns left in the glove box? :-)

"I don't think that means what you think it means."

But apart from that, when an artillery battery is reduced to one gun by counterfire, it is still a battery.

Dictionaries differ as to whether an electrical battery is "one or more" or "two or more" cells, but OED goes with "one or more" and Cambridge doesn't specify, it just says "a device that produces electricity to provide power for radios, cars, etc.".

Personally, I think that in current usage, if it has single external positive and negative terminals, it's a battery - regardless of the number of internal cells.