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Old 22-08-2020, 07:24   #1
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3 Firefly L16ís

I have three new ones, less than 30 days old sitting in my Salon, never connected. We are buying a house and will put the boat on the hard for a year, and I’d rather not do that to brand new batteries. They cost $771 ea, and of course shipping for 300 lbs on a pallet.
I was thinking $2,000 for all three which is $666 ea of course which is about $310 off.
Pickup In Jacksonville FL. Shipping would be expensive.
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Old 25-08-2020, 16:11   #2
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Re: 3 Firefly L16ís

I’m sort of surprised with as much interest as people have for the Firefly batteries that no one has jumped on this?
I could be somewhat flexible on the price, but I did have to pay for them when I ordered them, wait a couple of months for delivery as they are hard to get, and with shipping and tax I believe the price pushes $2,800 pretty hard.
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Old 25-08-2020, 16:58   #3
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Re: 3 Firefly L16ís

I'm curious as to why you dont just keep them at your new house on float if it's only a year before you wish to put them in service?
Wouldn't have thought they'd deteriorate much but I'm not familiar with Firefly chemistry so maybe you can tell me.
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Old 25-08-2020, 17:12   #4
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Re: 3 Firefly L16ís

Its a matter of size.

I just got 4 of G31s for $1953 including shipping. I couldn't have even fit 3 L16.
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Old 25-08-2020, 17:27   #5
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Re: 3 Firefly L16ís

Quote:
Originally Posted by Compass790 View Post
I'm curious as to why you dont just keep them at your new house on float if it's only a year before you wish to put them in service?
Wouldn't have thought they'd deteriorate much but I'm not familiar with Firefly chemistry so maybe you can tell me.



Don't even float them. Set them in a corner and they will do fine. Self discharge is very low, and the pick right up where they left off after you charge them.


I have a bank of six Group 31 Firefly's but would have considered the size the OP got, if I had the height in my battery compartment.
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Old 25-08-2020, 17:36   #6
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Re: 3 Firefly L16ís

Quote:
Originally Posted by Compass790 View Post
I'm curious as to why you dont just keep them at your new house on float if it's only a year before you wish to put them in service?
Wouldn't have thought they'd deteriorate much but I'm not familiar with Firefly chemistry so maybe you can tell me.
I cut n pasted this from the users manual https://www.emarineinc.com/Shared/pd...ers-Manual.pdf

FULLY-CHARGED WHEN SHIPPED
The Oasis will be shipped from the factory fully charged. Some venting from the valves is possible when it arrives.
STORAGE CONDITIONS- In the userís interest the storage period should be as short as possible.

We will likely sell the boat, in truth it would be financially more difficult to maintain both a house and a boat, if I kept the boat in the condition it is now, and Iíd hate to see it degrade over time in storage.

However if you download the Firefly user manual it seems to strongly suggest that the batteries should be placed into service and not stored, as I have zero experience with them, I have to accept the manual of course.

They are big, as in tall. In order to fit them I would have to put them in a storage compt, but I already have two 220 AH Lifelines in there as it is, so I wouldnít be wasting space, but from a technical perspective having three batteries in series to obtain a 450 AH bank is much superior to parallel connecting 12V batteries. Just as an example you would only have 6 cells.
To get to 464 AH with G31ís means four batteries, each have 6 cells each, so thatís 24 cells, four times as much of course, and the more cells, the more likely one will fail.

The L16ís are a much better bank than G31ís, but thatís pretty much true for anyoneís battery.

Plus if you look at the Firefly data, the cycle life is much, much longer than the G31 batteries.
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Old 25-08-2020, 17:37   #7
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Re: 3 Firefly L16ís

Those batteries will hold easily. Put them on float and leave them charged. No cycles. Self discharge is very low. You can even disconnect them and top a couple of times.
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Old 26-08-2020, 18:32   #8
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Re: 3 Firefly L16ís

Quote:
Originally Posted by a64pilot View Post
I cut n pasted this from the users manual https://www.emarineinc.com/Shared/pd...ers-Manual.pdf

FULLY-CHARGED WHEN SHIPPED
The Oasis will be shipped from the factory fully charged. Some venting from the valves is possible when it arrives.
STORAGE CONDITIONS- In the userís interest the storage period should be as short as possible.

We will likely sell the boat, in truth it would be financially more difficult to maintain both a house and a boat, if I kept the boat in the condition it is now, and Iíd hate to see it degrade over time in storage.

However if you download the Firefly user manual it seems to strongly suggest that the batteries should be placed into service and not stored, as I have zero experience with them, I have to accept the manual of course.

They are big, as in tall. In order to fit them I would have to put them in a storage compt, but I already have two 220 AH Lifelines in there as it is, so I wouldnít be wasting space, but from a technical perspective having three batteries in series to obtain a 450 AH bank is much superior to parallel connecting 12V batteries. Just as an example you would only have 6 cells.
To get to 464 AH with G31ís means four batteries, each have 6 cells each, so thatís 24 cells, four times as much of course, and the more cells, the more likely one will fail.

The L16ís are a much better bank than G31ís, but thatís pretty much true for anyoneís battery.

Plus if you look at the Firefly data, the cycle life is much, much longer than the G31 batteries.
Thanks for the link.
Interesting that they put it in red about the storage.
You'd assume with a long cycle life they'd be fine being stored but yes I'd believe the manual too.
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Old 31-08-2020, 11:51   #9
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Re: 3 Firefly L16ís

OK, how about $1,500? I’m going to sell the boat and just as soon had rather not go through the time and expense of installing these as I doubt they will raise the selling price of the boat.
Surprised there is no interest, I had to wait a couple of months after paying for these things before delivery as there was a backlog, so is the manufacturing rate just minuscule?
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Old 31-08-2020, 12:50   #10
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Re: 3 Firefly L16ís

I may be interested.....considering buying a boat that probably needs new batteries, and I already have Firefly's in my current one. No idea how easily they would fit, but I should know more, both regarding if I buy, and if they fit, in a couple of days.
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Old 02-09-2020, 10:51   #11
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Re: 3 Firefly L16ís

I believe they are sold, pending pickup.
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