I'm looking at getting a pv system capable of generating 3kw a day (power needed for a stand alone system). With what I've researched I've discoved that battery wiring is preferable via series instead of parallel. With this in mind I've been looking at purchasing 6x2v/1000ah batteries. Here is my reasoning.

-3kw per day needed.

-2 days of autonomy preferred.

-6kw for 2 days (x2) working on 50% discharge.

-12kw for 2 days (divided by number of volts)

-12kw divided by 12v = 1000 (min a/h battery required)

keeping in mind that the 2 days of autonomy will not be consecutive (e.g.: 2 days use/charge/2 days use/charge etc).

i will also be having a 2kva gen for those times of need.

This system would also be fitted to a 30' houseboat so space is limited. I am aware that the battery bank will be extremely heavy (>300kg) and pv array may take up as much space as 20m sq (lucky I have a top deck for the pv array.

would i be correct in assuming that the 6x2v 1000 a/h battery bank wound be sufficient for the storage of the 3kw/2 day autonomy?

any feedback would be appreciated.

cheers.

-3kw per day needed.

-2 days of autonomy preferred.

-6kw for 2 days (x2) working on 50% discharge.

-12kw for 2 days (divided by number of volts)

-12kw divided by 12v = 1000 (min a/h battery required)

keeping in mind that the 2 days of autonomy will not be consecutive (e.g.: 2 days use/charge/2 days use/charge etc).

i will also be having a 2kva gen for those times of need.

This system would also be fitted to a 30' houseboat so space is limited. I am aware that the battery bank will be extremely heavy (>300kg) and pv array may take up as much space as 20m sq (lucky I have a top deck for the pv array.

would i be correct in assuming that the 6x2v 1000 a/h battery bank wound be sufficient for the storage of the 3kw/2 day autonomy?

any feedback would be appreciated.

cheers.

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