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I have in my ASW27 three batteries and two solar
panels on the fuselage for recharging.
Batteries need a certain time to adjust their
chemical process for delivering current and for
receiving current from the panels. The racers for
the solar challenge overcome this problem by using
two batteries: One for driving and the second for
receiving the energy delivered by the panels or
from the motors while braking. Is the second one
full the batteries are exchanged in the circuit:
the second for driving and the first for recharging.

I did the wiring of the rotary main switch the same
way for my ASW27 (example for 2 batteries)
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BATTERIES 7.2Ah 0 A 0 B
¦ ¦
+-----¦------¦---+--- LOGGERS
¦ ¦ DIODES ¦
¦ +------¦---+
¦ ¦
ROTARYSWITCH + +-+ + +-+
ROTARYSWITCH --¦-----¦ 0 A B
ROTARYSWITCH + + + +
¦ ¦ ¦ ¦
+-------+------------- AVIONICS
¦ ¦ ¦
SOLAR-CHARGER -------+---+ = 10000uF
¦
GROUND ------------------+-------------------
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The Cambridge Logger takes the power from the battery
with the highest Voltage.

The capacitor bridges switch over time up to 1sec if
radio is in receiving mode.

I fly with this layout for more than 10 years and never
had a problem with instruments, loggers or palms failing.
I normally fly a complete week until I recharge the
batteries externally.

Additionally I have an override switch which connects the
Solar panels directly to the Avionics, but I never saw
need to use it up to now.

Chris
CH
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