At 16:35 19 March 2014, JS wrote:
I have had Strobl 2-panel units on a couple of gliders.
Even using SLA batteries, with the glider tied down outside overnight
between flights I could keep the batteries charged on a panel which had
no
VGA display.
Using LiFePO4 batteries the 2-panel system will keep the batteries
charged.
That panel was perhaps "full monty", having com, txp, vario, VGA, flarm.
Interestingly, leaving the ClearNav on and removing the batteries, in
full sun the 2-panel Strobl rig would keep the CN running if on minimum
brightness.
That glider had the Strobl charger on the avionics bus, so whatever
battery was selected was being charged.
Strobl also sells a dual battery charger.
Jim

Mine is two panel providing over 750ma in full sunlight. It connects
directly to both batteries using a two channel controller. I don't have a
switch, it seems to work it out for itself. Just works. Simples. Thorughly
recommend it.