LiPo Batteries in Gliders

33 wrote:
I have been flying with an Ultralife UBBL09 Li Ion battery for several
years now with very good results. This is a military grade battery
and built to very high standards. It comes integraded with 12 and
24VDC output from the same battery and also has LCD charge
indicators. Because the Li discharge curve running flat at 11.1, I
run the battery at 24VDC with a 12VDC voltage regulator to maintain
constant voltage to the radio to improve performance. The transponder
takes 24VDC, so I don't need to regulate that. Other instruments are
much less sensitive to voltage. I run a 4700, 302 and transponder and
go on multiple day 8 hour cross country flights without recharging.
The only draw back is the insane price for the battery and charging
system. I am contemplating upgrading my panel to all glass and will
add an additional UBBL09 to power all the electric instruments.

What is the price, and where are they available?

What was the main reason for going to this battery?

What radio do you have? Many of the new ones work up to 30 volts.

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl

- "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what you need to know tinyurl.com/yfs7tnz

What is the price, and where are they available?
What was the main reason for going to this battery?
What radio do you have? Many of the new ones work up to 30 volts.

Eric Greenwell - Washington State, USA (netto to net to email me)

www.ultralifebatteries.com

I use this battery because it allows me to have up to 36Ah at 12VDC in
the battery pockets in my ASW-27. This should allow me to run an all
glass cockpit including a Ultimate and a transponder as well as 5
other electronic gages for a very long day.

They run about $500 for the battery and $300 for the charger. It
definately does not make any financial sense to buy these. There is
NO ROI. Using the charger is highly recommended for safety reasons.

I use a Dittal FSG70 which has a warning flash at 10.5VDC as described
above. Dittal says that it can operate up to 28VDC as long as you use
the 12VDC regulator that they provide. Go figure!!! I sent for the
regulator from Dittal. I was having problems with long distance radio
transmission clarity and thought that I would give this a try. It
stops the flashing and I don't hear "Say Again" as much.