Another Battery Question

[hghost]

Yeah i know, I ask to many questions

Anyway.....

Since I did not get to fly today, as we all know I had to set my batts to Store again

Either I never paid attention and or I do not remember, but

when I went to do that I noticed my Batteries were not at the full charge state they were
when I first charged them up.

Example ;

When i charged my batteries they were 12.60 and each cell was 4.20 when charger stop alarm went off

Today it said when I hooked one up- 12.39 and each cell was 4.13

It was not used late yesterday evening .

Just curious about the drop in Volts.

btw the little hand held battery checker said the same thing.

[flydiver]

Normal. All batteries will drop a little soon after charging. Better batteries will lose a tad less. The difference between 4.20 and 4.13 is 0.07v after all. Trivial.

[hghost]

Thanks again

I figured so, but just could not remember, and could not find a note about it.

wanted to be sure

Strange at the things I can Remember and retain versus what I can't

Guess if it's not a routine thing, it does not stay within the memory bank in my head.

Thanks Fly

[flydiver]

What is actually more odd is that many people haven't got a clue what is going on with their batteries. Then there's another segment that is frantic if their charger is off 0.01v in accuracy (they aren't that accurate in the first place), or doesn't take them to storage at exactly 3.75v/cell (storage is far more flexible than that).
Seems, at least by posting questions that we have an inverse bell shaped curve with not much in the middle. Folks either seem to not have a clue or be obsessive.
Probably not really true but that's how it seems.

[hghost]

I have spoke to many who do things so different

I debated which way to go.

Many keep them at store charge and in a safe place in metal containers

Some simply keep them fully charged at all times and throw them on shelves and wherever is convenient.

I read allot of articles about these batteries and asked and still ask many questions about them.

After reading and asking those who know and experienced the good and bad of them, I decided to follow the
advice of those who know. I keep them at store charge and in a safe place in lipo bags and in metal containers
to stay as safe as possible, plus get as much out of them as I can.

Had another one of those who claim to be an electronics expert tell me they have a "Memory"....of course that has
been disproved time and again, but me not being a electronics expert it is impossible for one such as i to
have any knowledge....well according to them.

I just reminded them that about 99% of people, who use them almost daily and have tested and worked out the
figures have proved the "memory" idea was simply wrong.
And that i could read and the vast majority of users across the many forums also disagree with their "memory" idea.

It does not take an electronics scholar as it were, it simply takes a little proactive common sense and the ability to read
and ask those questions and compare the answers one gets from those who claim to know, versus those who actually do.

Plus the fact of one using them as much as possible...one learns with time, what is right and what is wrong.

Same is the way people handle them....many have no issues even with throwing them around at full charge all the time
BUT, all it takes is One Mishap.....and all the care free wish i would have's will not make a difference after that.

Me ? I rather be safe than sorry, and I much rather learn and keep learning, than throw caution into the wind , as it were ( pun intended)

[flydiver]

Don't even get me started on men that are stupid (which is distinctly different from uninformed/ignorant) but claim on unsupported evidence to be experts. Seems some people only need to know a couple things about a hugely complex topic to think they know everything. The groups are simply loaded with them.
I find this interesting. People keep asking the same questions over and over and over and over and over.....etc, and think they'll get a different answer. Sometimes they don't know, about as often is they don't get the answers they want. Generally what they get is chaos.
Then having gotten an answer(s) from some stupid SOB(s) that knows d**n little, NOW they think they know something and are completely willing to spread the knowledge. "I heard from a guy.....". Repeat until sane people go nuts.

[hghost]

I get attacked on other forums for using the "self claimed Expert" term...seems the forums are full of them

They will tell you everything they want you to know, instead of answering the question someone posted and wanted to know.

Worse ones I have found so far are those who like the one i mentioned above have an education ( or claim they do ) but are
educated idiots with no common sense or ability to back up what they claim.

Another are those who say they are pilots or many years of RC flying and tell me wind has no affect on these tiny foam planes ?
When i mentioned turning onto the wind and the plane was blown straight up , I was told it was pilot error as the wind has no affect
on my foam plane...as they stated, the plane does not know it flies in wind ??.........I almost fell out of my chair.

I never knew so little about so much......well according to the "experts " out there.

[Knackered Sailor]

Jun 6, 2015 20:07:18 GMT 1 hghost said:

Another are those who say they are pilots or many years of RC flying and tell me wind has no affect on these tiny foam planes ?
When i mentioned turning onto the wind and the plane was blown straight up , I was told it was pilot error as the wind has no affect
on my foam plane...as they stated, the plane does not know it flies in wind ??.........I almost fell out of my chair.

I never knew so little about so much......well according to the "experts " out there.

Ha ha love that. 

When it comes to batteries, like you, I keep 'em in a Lipo bag which is in a tin box. If I'm not going to use them for a couple of weeks or more then I put them to storage level. However if I think maybe there'll be a chance to fly in the next week I keep them fully charged ready to grab n go.

[flydiver]

Jun 6, 2015 20:07:18 GMT 1 hghost said:

Another are those who say they are pilots or many years of RC flying and tell me wind has no affect on these tiny foam planes ?
When i mentioned turning onto the wind and the plane was blown straight up , I was told it was pilot error as the wind has no affect
on my foam plane...as they stated, the plane does not know it flies in wind ??.........I almost fell out of my chair.

I never knew so little about so much......well according to the "experts " out there.

Well, on that one, yes and no. The plane is simply moving through a 'fluid'. It's reacting to speed and physics. If you go downwind it goes fast > it builds momentum > you turn suddenly back into the wind and the increased speed can easily make it pull up suddenly, much the same way it would it you could suddenly apply that much throttle, which you can't so you never see this behavior except in wind. This is especially true if you have some elevator input from the turn (likely). A small plane would react very quickly to that combination of forces.

This is all based on LAMINAR (smooth) flow. But, a harsh reality is there seldom IS laminar flow. There in lies the nut of the discussion and vigorous opinions. Gusts can do all kinds of nasty and unpredictable things. The smaller/lighter the plane + lots of draggy surface area will be affected even more.

[hghost]

Jun 7, 2015 15:36:48 GMT 1 flydiver said:

This is all based on LAMINAR (smooth) flow. But, a harsh reality is there seldom IS laminar flow. There in lies the nut of the discussion and vigorous opinions.

Do not tell them that...be it 5 mph or 100 mph winds, it has no affect on my plane
if it does it is pilot error...no matter what.

there is no wind, there is no wind, there is no wind "

I tried telling my SC that,,,, and I almost lost my plane the other day as a result !!

[flydiver]

From the description of where you fly I seriously doubt you could ever see anything resembling laminar flow. In sloping I've run into it a couple times. It's remarkably different. Flying is so fluid and predictable instead of bouncy and erratic.
It's probably like a perfect powder day in skiing - rare.

[hghost]

That is what i try and tell folks, the old saying in Real Estate as I hear is

Location , Location, Location

seems most can't understand what works in one area does not in another

my little field down from my house as a horrible twisting winds, almost always

go down the road the other direction North of me and less than a 1/4 mile
and beside that same Interstate in that location, tho windy, it is not as bad

I am sure I could travel around this City and locate some other flying locations where the wind is
not as bad or blocked whatever...One is just another 2000 feet from that second one I mentioned, larger
lot, grown up, but nice, Mountain on one side blocks allot of wind, BUT, could not get permission
to fly there .

Now the local school yard where many would go and practice sports has now been fenced off
and No Trespassing signs put up, so definitely no flying there . ( I never did anyway, but thought
about it.)

The problem I have with traveling about is health issues. Sometimes I just can't be off away from
my house. Plus now days, one never knows what sort of people may be about. Many sue happy people.

I have to pick and choose and be patient and wait for my time to fly. Can be frustrating , but
I would rather be safe than sorry .

This Interstate, puts out allot of heat...closer you walk towards that boundary fence the temps increase Allot
I also dare say that also is one reason that location is much windier, or affects the spin, mph, who knows ( just speculating)
BUT , there is a Temperature difference that is very noticeable for sure.

And I also notice one side has a dip and it is far windier on that side than the other as well...
so many variables and most way over my pay grade to figure out .

[sham]

Don't know what you're worrying for.

Wind doesn't affect these planes even a little*.













* comment may not be entirely serious.

[hghost]

Jun 7, 2015 22:30:32 GMT 1 sham said:

Don't know what you're worrying for.

Wind doesn't affect these planes even a little*.
















* comment may not be entirely serious.

[pug205]

So, me being one of that know's no better, which battery voltage checker is the best for our Cub batteries? As you may have guessed, I'm just getting back into my Cub. I have just been putting a monthly 1/2 charge into mine and hoping for the best tbh.