Hi Chris,
For most pratical purposes, five 50Ah batteries in parallel are essentially a 250Ah battery, so I believe that it is a matter of personal preference.
With a constant maintenance charge, flooded L/A cells are the cheapest solution for the capacity. Flooded cells come with physical maintenance (watering) and need to be mounted upright (usually not a big issue). The constant charge from a solar panel will prevent premature aging from sulfation while not in use. AGM will hold a charge longer without maintenance charging and generally last more cycles than flooded batteries. LiFePO4 batteries have an even greater life measured in cycles, are more tolerant of deeper discharges (but not discharge to zero) and are less than half the weight and volume for the same capacity.
Regardless of your choice, each battery type will benefit from charging profiles that are designed for that specific battery.
I believe that AGM represent a good compromise between durability and price, but it is really just a personal choice.
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, "chriskellyukuk" <chriskellyukuk@...> wrote:
>
> I have been an electricboats group user for a few years.
> I have seen many threads about batteries and hope there is a consencus.
> I am not using batteries for traction but domestic.
>
> Using a solar panel set up in the Northern Europe area (London UK)
> which are the best batteries ?
> are 5 50ah batteries better than 1 250 ah battery or does it not matter?
>
> What do we think is the best battery set up for deep cycle domestic use?
>
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