How long will a lipo retain its charge

[Charlie-III]

Originally Posted by Olle P

You're mixing up stored energy and capacity.

The capacity loss means that a nominal 1000 mAh battery will permanently lose 20-40 mAh of storage capacity per year, if stored under normal circumstances.
The charge will meanwhile drop from some 50% to 40% of that capacity.

That said, having a battery fully charged and then not used for a day or two is no problems. It's not like it will lose quite a bit of "bite" as a NiMH battery.
You can even have the battery at storage charge (to 50% capacity) and just plug it in for a run (with shorter run time).

If you read exactly what I quoted, the same thing was listed twice (said slightly different), thus my comment.

[12stepRC]

Originally Posted by Johnnysplits

You in fantasyland?

Mayyyybe

[12stepRC]

My "pos" has lasted fine for 3 years. Also with it being cheap I don't worry about losing it.. A good investment I guess. I (or you) could always go to the lhs and ask them to check the battery if you feel the need.[/QUOTE]

I stand corrected, ill have to keep it in mind then

[Johnnysplits]

Originally Posted by 12stepRC

Mayyyybe

I wish I could buy something once...but I have an r/c spending problem

[12stepRC]

http://www.maxamps.com/Lipo-13500XL-74-Pack.htm

If you could even use this in a wraith, scx10 etc how long would something like that last, as far as charge goes, guestimated ?

Also will the c rating in a lipo greatly effect the performance of a trailer/crawler because this bad boy has like 100-120 something like that

[12stepRC]

Originally Posted by Johnnysplits

I wish I could buy something once...but I have an r/c spending problem

Look at my user name, says it all, and I'm just starting, and I already know I have a problem :( haha

[Johnnysplits]

Dude, don't even waste your money on that lipo. However, 13,500mah would last a loooong time. As far as C rating, you really don't need more than 30-40C.

[Johnnysplits]

Originally Posted by 12stepRC

Look at my user name, says it all, and I'm just starting, and I already know I have a problem :( haha

It never ends!! The aftermarket parts suck me in and out comes the debit card.

[12stepRC]

Why u no rike max amps? and what's the issue with a high c rating because I haven't had that question answered yet?

[12stepRC]

Originally Posted by Johnnysplits

It never ends!! The aftermarket parts suck me in and out comes the debit card.

My biggest money crap Shute is the merv god I hate that thing, with all due respect to traxxas, they really let the ball down on that thing, every time I drive it something breaks so I have about $400 dollars of replacement parts I did t want to spend money on in the first place... Finally I gave up, so P.Oed,

[12stepRC]

Originally Posted by Johnnysplits

It never ends!! The aftermarket parts suck me in and out comes the debit card.

Then a couple years later


Debit card - card= debit. Debit-i=debt well I guess that's not really funny :/

[Johnnysplits]

Originally Posted by 12stepRC

Why u no rike max amps? and what's the issue with a high c rating because I haven't had that question answered yet?

MaxAmps=overpriced lipo. The C rating is the discharge rating of the lipo. It determines the constant amps out when multiplied by the mah of the lipo. Here's an example: 5000mah 30C...150 amps out
5000mah 50C...250 amps out
With most lipo's, the amp burst rating is double the constant. As C rating goes up, so does the weight.

[12stepRC]

So it wouldn't be bad to have a high c rating just not necessary? Also what would be the general target price for a good quality lipo that isn't over priced, and another question would that lipo work fine in a wraith, scx10 rigged for trailing?

[Charlie-III]

Originally Posted by 12stepRC

So it wouldn't be bad to have a high c rating just not necessary?

On a high mah/capacity pack, the "C" rating is not as big a deal. On a small comp pack (say less than 750mah) then "C" makes a huge difference.

Since you're looking at high mah packs, a 20C is fine, 40C is nice.

[12stepRC]

Ok makes sense now, thanks

[12stepRC]

Would a 750 mah battery be used for something like a Moa comp crawler or a super class ? And would they be the packs that you have one on each axle Velcroed in ?

[Johnnysplits]

Originally Posted by 12stepRC

So it wouldn't be bad to have a high c rating just not necessary? Also what would be the general target price for a good quality lipo that isn't over priced, and another question would that lipo work fine in a wraith, scx10 rigged for trailing?

Between $20 to $40 each

[12stepRC]

Originally Posted by Johnnysplits

Between $20 to $40 each

Well then I've been looking in all the wrong places and websites

[Charlie-III]

Originally Posted by 12stepRC

Would a 750 mah battery be used for something like a Moa comp crawler or a super class ? And would they be the packs that you have one on each axle Velcroed in ?

A single pack.

In my 2.2 MOA, I run 325mah-450mah 3S LiPO packs, one at a time and I can do maybe 2 courses but usually swap packs after each course.

[12stepRC]

I'm a newb when it comes to comp crawlers so is there any kind of general rule on how long it takes to complete a course? Or not