On 6/14/2010 7:31 PM, Todd Fischer wrote:
Reading the Univair memo it sounded like the older generators just
couldn't handle charging the larger batteries and only approved the
RG25 batteries.
This is a misconception. The larger battery has more capacity, so it
will take longer to discharge, as well as longer to recharge, but,
unless you continually discharge it, which means your constant
electrical load exceeds the generator capacity, it will remain charged
the same as a smaller battery. OTOH, if you are exceeding the capacity
of the generator on a regular basis, the smaller battery will go flat
faster.
If the RG-35 battery is in good shape, and you charge it up (once), and
you do not exceed the capacity of the generator with your electrical
load, then the battery will work fine.
As an aside, the constant load on the electrical system should not
exceed 80% of the generator capacity. Constant load includes comm
recievers, nav radios, transponders, nav lights, etc.; everything that
is not intermittent, e.g. landing lights, flap motors, gear motors, comm
transmitters, etc.
--
John Cooper
Skyport East
www.skyportservices.net
