[PSUBS-MAILIST] Power sources

[J. Foulkes via Personal_Submersibles]

I still don't think that is a fair representation.  The Li topology Jon
asked about was Li-ion.  If weight is the single greatest factor then LiPo
would be the hands down winner, one of the greatest problems with Li is the
recharge cycles.  LCO relative to other types is still pretty low for the
cost.  You would honestly be far better off going with something like LTO
for the efficiency or NiMH for the price. The only argument for SLA (AGM)
over something like NiMH is voltage sag, but that sort of discharge rate
can be handled with additional circuitry that still doesn't get anywhere
near the future cost of an SLA based system.

On Fri, Jun 2, 2023 at 9:02 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Jon, for me personally, Li is the way to go if weight is a concern.  If
> cost is a factor and weight is not an issue, then AGM is fine.  I think
> However that the cost gap is closing per useable ah hr
> Hank
> Sent from my iPhone
>
> > On Jun 1, 2023, at 8:29 PM, John Bussard via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
> >
> > Reading Busby and his discussion on the pros and cons of the battery
> types available at time of publication:
> >
> > Is there sufficient data as folks move forward in new sub designs re:
> newer battery types- Specifically Li ion?
> > I’m guessing that given the safety hazards there aren’t sufficient
> advantages to using- lead acid batteries seem to serve the majority of
> desired profiles.
> >
> > Is this something that’s changing, or do folks expect to continue using
> old school batteries?
> >
> > Thanks for thoughts and history,
> > John
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