high rate charging on generator
Hi all, The batteries: 556 amp-hours of surplus acid AGM batteries 12 volt jars 105 lbs each. They are wired as two banks with balanced wiring. The depth of discharge: 12.1 volts under 425...
Forum Discussion
pianotuna wrote:
Hi Imurphy,
Welcome to RVnet!
By hit it hard, do you mean discharge rate? Or charging rate?
What would you suggest for the 139 amp-hour 12 volt battery for a maximum (safe) discharge rate?Imurphy wrote:
Where in telcom we generally hit it hard, and there for don't get as many cycles out of them.
Discharge. Everything in telcom is designed around a min 8 hour cycle life(load supporting). BUT, it is all to common for equipment growth to over run plant growth. Many systems have gone from 8hr min battery plants to battery plants to provide "carry through service". Basically last just long enough for the generators to come online. I know of many places that have 16,000+/- AH's of battery. But if the generator does not come online within 15 minutes things are going down. Usually due to space for batteries they start to shift focus not to battery backup but minimizing power loss all together. So they just buy a generator or two. And as long as that generator will run for more then 8 hrs with its fuel supply it makes the FCC happy. NEW E911 requirements have jumped this rating for many facilities to 24hrs as of Oct 15th of this year. That has caused a bit of a scramble for abilities pulling 302,000+/- watts, as there just is not anywhere left to put batteries. And the cost of huge Lithium plants is still largely out of reach for backup purposes.
