Thanks for your reply.
I was told that these have a service life of 20 years?
I have seen many that were over 10 years old still in service.
I was curious as to how they would work in an RV application?
I have 6 of these and while trying them out I have been able to run 12 overhead lights plus an inverter powering a TV for 14 hrs. The voltage meter showed 12.30 after 14 hrs of use.
I don't know if this is good or bad but I figured since they were free, it might be worth a try.