12 b3


I have a Gill  G-35 in the C182

I took it out and checked the battery voltage. It was down below 4.5
volts.

Aircraft Spruce wants $231 dollars for a new one.

The acid level was a little below the top of the plates.

I added a little water to each cell.

I hooked up the battery charger and very little current flowed. I
left it charging for 18 hours. Voltage is now over 12 volts and
charging current is 10 amps.

I was blown away. That battery sat around for years.

I'll learn more when I start the engine with it.


Paul Lamar

--------------------------------------------------------------------------------------



Well I hooked everything up including my 200 amp battery charger. It
puts out 200 amp to aid in starting so it claims. It works on the
TTC engine.

In this case the O-470 engine turned over very slowly while the pre
oiler was running. The Gill measured over 12 volts just before I
tried to turn the engine over.

No question of starting.

It could be a lead acid battery that measures the correct voltage
will not put   out the current. I don't know of this and never heard
about it.

Looks like I will need to buy a 12 volt battery from Walmart and see
how that does. The prop rotation was so slow I could have turned it
by hand.

After this was all over I checked the Gill battery again and it was
over 12 Volts. I am a bit mystified.

Paul Lamar


My Gill did the same thing, showed over 12 volts but failed on
delivering any amps, I used to have to hand prop the Pacer, once you
replace it your worries will go away. I also bought an el cheapo
cigarette lighter volt/ammeter on Amazon to see how the new battery
does, and it confirmed no voltage regulator issues and normal
current draw for everything except the landing light on my Pacer, so
there's a wiring issue on that circuit that I will fix when I next
have time


Alex Molteno

Paul,

I’ve found that my deep cycle trolling motor batteries would only
last about two years.

I also discovered that if I use a small charger called a “Battery
Minder” the interval would increase to about six years. It will
usually charge a battery back to 12 V within 24 hours if everything
is healthy. At that time it starts blinking showing that it is using
a pulse charge that supposedly destroys the sulfurdatian on the
plates. It was on special for about $39 at Northern Tool? Works great
for me. Barry Bordes




I have frequently seen batteries that will display their appropriate resting Voltage level, but failed to produce their rated amp hours.   This usually first manifests by slow starting.  For 12 V batteries, the local auto parts place can easily test this function.

I have used the batteryminder device for over 10 years, which seems to add at least one or two years to the life of aircraft batteries.

Scott Gettings


------------------------------------------------------------------
Please  add your questions or comments  at the end of the thread. Not the beginning.

I am going to enforce that rule. If people don't do that it will not be forwarded. My ISP changed the rules.

The Rotary Engine free News Letter. Powered by Linux. If you want off the list PLEASE let me know and I will remove  you.

ACRE NL web site. http://www.rotaryeng.net
You Tube  http://tinyurl.com/beqqxas or PaulLamar2
Copyright 1998-2018 All world wide rights reserved.