24 volt battery bank?
Other than needing to use a DC-DC converter for the 12 volt system, what problems would there be in going with a 24 volt battery bank for a custom rig? The reason for this is that Magnum Energy has...
Forum Discussion
pianotuna wrote:
Hi,
With sufficient solar who cares about efficiency?
The pure twelve volt loads amount to about 40 amp-hours a day so the losses would amount to 8 amp-hours. So again, who cares about efficiency?hbski wrote:pianotuna wrote:
You already have a converter. Run that from an inverter or shore power for the 12 volt needs.
90ish % inverter efficiency, times typical 80% converter efficiency probably prohibits this....but good for back up.
but DC to DC can be >95% efficient (per manufacturer anyway)
but for $90 for a Victron 25A 24 to 12V @ 96% why not?
it would replace the converter 80% X the 93.7% peak efficiency total of ~75% PLUS extra transmission losses going from 24V DC to 120V AC to 12V DC. Not to mention peak efficiency is only at a specific output (~1400W on the 4024) and typical efficiency will likely be 90% (or less) garnering 72% or less.
Plus some of us have limited roof space for solar!
