Battery Discharge while not being used?

[SteveReno]

Should Solo's battery lose charge while not in use?
2 of my batteries need about 10min. charge time after staying on table for over 2 to 3 days.
Normal?

Thanks

 

[Timmytimetravel]

I have many batteries. I've not flown for two weeks. When I checked them, they were all at 5/8 dots. So it seems pretty uniform standby drop rate. Wasn't expecting it to be that quick

 

[SteveReno]

I have many batteries. I've not flown for two weeks. When I checked them, they were all at 5/8 dots. So it seems pretty uniform standby drop rate. Wasn't expecting it to be that quick

Thanks for the reply & info.
I thought it might be the norm, but i remember receiving these & other batteries via mail & they were all about 1/2 charged.
If they lose a "Dot" every 3 days, then 30 days they exhausted there charge?
Can't be?
Smart Battery? Not so much.

 

[Carson]

Thanks for the reply & info.
I thought it might be the norm, but i remember receiving these & other batteries via mail & they were all about 1/2 charged.
If they lose a "Dot" every 3 days, then 30 days they exhausted there charge?
Can't be?
Smart Battery? Not so much.

Yes It seems to be the normal I have 5 batteries and every 3 day's they R down 3 dots put of 8.....Basically I need to charge the night before and by morning they R probabaly at 90% already ......The batteries suck at $ 200 a piece in Canada

 

[SteveReno]

Yes It seems to be the normal I have 5 batteries and every 3 day's they R down 3 dots put of 8.....Basically I need to charge the night before and by morning they R probabaly at 90% already ......The batteries suck at $ 200 a piece in Canada

This seems to be the "Norm" then.
Several members have confirmed this. Must be the nature of this type of battery.
thanks all whom replied.

 

[1Lastcast!]

They are designed to discharge down over time. These types of Batterys (Lipo) are very unstable at full charge. A quick youtube search (Lipo fires) and you will have a new respect for them. I have 5 batterys and 2 chargers. Currantly I only charge when im going to be awake and in the same proximity of the batterys being charged. Although I think im going to contruct some sort of charging station in my basement using a cement block and patio stones. I'm not taking any chances. Please guys don't charge this batterys or any for that matter while your sleeping or away.

 

[prowler9]

Mine were the same.. (I have 3) all were fully charged and when I went to go fly they were down to about 1/2 over 2 weeks time..

Sent from my SM-N910V using Tapatalk

 

[RolandS888]

If you were to leave your batteries fully charged for weeks at a time, after a year you would see significant flight time reduction as the capacity decreases.
Staying 'full' is detrimental to a LiPo. On a standard Lipo you should always finish the day with charging your batteries up to storage level (1/2 full, 15.2 volts on 4S). Your batteries will last longer if you do this.
I did a bit of measuring of these batteries, and whilst storage charging them to half I noticed that storage level of these batteries equates to 5/8 leds.

 

[Timmytimetravel]

I've watched my smart battery over a week
And it's still 5/8 vs previous period. So far I concur. The smart battery has dropped to storage voltage. See what happens in coming weeks. It's seems like night before charge fest is the way to go. Bring on the 4 way charger . What happened to that ?

 

[Mark_T]

Philip from 3DR has confirmed on the Facebook group that these packs do not have any self-discharge capability. That is not one of their smart features.

I monitored 3 of my packs at various charge states over a 2 week period and none of them lost more than 0.3V over that period.

Right now I have a pack that I fully charged on Saturday and it still has all lights lit when I checked it.

Are you charging your packs until the lights all go out and the charger shows a green light?

 

[RolandS888]

Ok , this is good to know.
It also means that if the batteries are to be left for an extended period they should be only charged to 5/8 leds, or discharged to storage voltage.

 

[Mark_T]

Correct, although I do recall Philip saying that there was less need to be too worried about leaving them fully charged as they were more tolerant to that than most other packs.

Personally, a week is about my comfort level, and it is rare that I'd go longer than that.

 

[Timmytimetravel]

Interesting. Another week has gone by and my testing pack is still at 5/8. I always charge them till the lights go out because I'm usually flying within a few days again. So all my batteries discharged from full down to 5/8 over 2-3 weeks then the one I left stayed the same over another week so far.

Sounds ideal to me however weird to hear it's not by design according to 3dr

 

[Timmytimetravel]

I have many batteries. I've not flown for two weeks. When I checked them, they were all at 5/8 dots. So it seems pretty uniform standby drop rate. Wasn't expecting it to be that quick

So after 7 weeks I decided to charge my test battery. It was still at 5/8 before I put it on charge. I conclude it drops to that level quickly when not used but stays at that level for a long time.