jmauld
Well-Known Member
- Jun 9, 2020
- 2,844
- Boat Info
- 2010 Sundancer 390
2016 Sea Hunt Ultra 211
- Engines
- Twin 8.1l of gas guzzling iron
Nice!!
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Yup. Bilge pumps/ ac pump etc are in front of this. This sits just behind all that.Nice clean install! Do you not have a bilge pump there?
What’s the consensus on adding capacity over time?
Can you start with a small system and add more batteries two years down the road, or would you need to create a fresh set?
The good thing about these batteries as long as they are properly charged and discharged they will remain a peak performance for years. Adding capacity as long as that capacity is the same profile should not be an issue for quite a few years. Lead acid batteries loose performance within a year or so and the reason that adding new capacity tends to be hard on the new batteries. The only thing I would say on the lithium is the new capacity must be on a separate BMS; but then it has to be....Best practice would be to get the all at once, all the same capacity, matched.
But lots of people add cells over time. You just won't have as much capacity the further from spec the cells are.
Since I changed packaging about 3 times…a lot more than If I had purchased off the shelf, and prices has been dropping over the course of the build.What cost do you have in each battery?
Since I changed packaging about 3 times…a lot more than If I had purchased off the shelf, and prices has been dropping over the course of the build.
But starting today….
SFK Battery Kit $200
JBD 200A BMS $200
4x304 Ah Eve Cells @$135 = $540
4s Active balancer $25
Misc wire/terminals $50
So roughly $1000 each.
My issue is getting the current flow necessary to support a 2800W inverter @ 12V.
if I were starting from scratch, I’d go with a 24V version and off the shelf batteries that Will recommended….probably the SOK marine versions.
Oh well. Learned a lot and had a good time. Probably build 1 more to be able to get several hours out of the front AC…we shall see.