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Charging multiple glider batteries



 
 
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Old January 8th 14, 04:02 AM posted to rec.aviation.soaring
GC[_2_]
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Posts: 107
Default Charging multiple glider batteries

Very neatly executed!

I assume the vertical boards are the Ag102 and the horizontal ones are
your I/O circuits. Is that right? What did you need to add?

The Shortform doc says the charger IS temperature-compensated but also
says that "With the addition of a low-cost thermistor, charge voltages
CAN be temperature compensated". Which is right? Did you have to add a
thermistor yourself?

Is there an NZ/Oz distributor for Silvertel?

GC


On 8/01/2014 09:01, Neil Allison wrote:
Hi Don,

How do other clubs, commercial ops keep multiple batteries charged up?


I built a 1Ux19" rack mount, 12-way charger for the Canterbury Gliding Club. Batteries remain connected to the charger whenever they are not in a glider. The charger uses Silvertel Ag102 multi-stage battery charger modules, one per battery.

Each channel has a green LED that is illuminated when the battery has returned to float charging. The idea is to help club members identify which batteries have just been connected and which have been recharged.

These photos are from my workshop during testing:
http://www.avon-tech-solutions.co.nz...arger_Rack.JPG
http://www.avon-tech-solutions.co.nz...12WCharger.JPG

On our flying camps at Omarama, we take a couple of 4-outlet versions that are powered by a laptop AC adapter:
http://www.avon-tech-solutions.co.nz/gliding.html

When I test batteries I do a semi-automatic, timed discharge to 10.5V using a 50W 12V halogen light bulb. If this duration is less than about 75% of the nominal Ah value I suggest the battery is replaced.


 




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