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HelicopterMain Discussion › Question about storage of batts
11-07-2013 10:58 PM  4 years agoPost 1
fenderstrat

rrProfessor

Aston,Pa

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If you are going to go flying within a couple of days do you guys put the batts in storage charge?I was under the impression storage charge was if you were not going to use the batts for a few weeks.But in the various threads I see a lot of guys go into storage charge almost every time.If I am going to be flying within the week I just leave my batts where they are after the flight.So far all my lipos have gone past 250-300 cycles.I only storage charge if I am sure they wont be used for couple of weeks(which is rare except for dead of winter).So....who storage charges every time?

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11-07-2013 11:05 PM  4 years agoPost 2
wrongler

rrProfessor

Brewerton, New York

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I'm like you, most lipos are where they were the last time I flew them.

Bill Whittaker

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11-07-2013 11:25 PM  4 years agoPost 3
unclejane

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santa fe, NM, USA

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Same here, where they are after a full flight is storage charge. Around 50% to 60% depleted, with the cells usually around 3.8v to 3.85v.

The only time I do storage charge is if I don't get to fly a fully charged pack or had to cut the flight short. Then it's a brutal discharge on the charger down to 3.85v per cell...

LS

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11-07-2013 11:34 PM  4 years agoPost 4
gcm2

rrApprentice

Ft Worth, TX

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Me too. I'm not particular about giving store charge, unless they're gonna sit for 2 weeks or something.

Exception is since when I'm flying most every day when the weather is good, I store charge all the discharged batts the night before so they won't take so long to go full charge tomorrow!

TREX 700e, Goblins 500 & 570, DT520e, Gaui X3, Synergy E5

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11-07-2013 11:42 PM  4 years agoPost 5
fenderstrat

rrProfessor

Aston,Pa

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If you are going to fly the next day why waste time storage charging that night and charging again the next day?You might as well just charge them.Batteries are designed to hold energy,a full charge over night does no harm

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11-07-2013 11:42 PM  4 years agoPost 6
Vaderluck

rrApprentice

Melbourne - Australia

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lipos have gone past 250-300 cycles
Most of my Turnigy 3S1P 2200mAH 25C batteries after 50~60 cycles, they can only be recharged up to 1500mAH. When they were new, they can be recharged to 2000mAH. A lost of 25% capacity. So I throw them out because it is not worth to recharge them for an hour then fly for 3-4 minutes.
I never be able get pass 80 cycles.

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11-08-2013 12:13 AM  4 years agoPost 7
fenderstrat

rrProfessor

Aston,Pa

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Are you saying you normally put back 2000 mah into a 2200 mah battery?if so you are not following the 80% rule and that will kill a battery fast.You should never be putting more than 1760 mah into those batts.Over discharge is the number 1 killer of batts

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11-08-2013 12:21 AM  4 years agoPost 8
ZS-JAF

rrVeteran

Houston, TX

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I store a 1C charge rate every time I fly all of my packs to 3.9V. I like to parallel charge when I get to the field, so during storage I monitor cells and IR. It also gets me in the air a few min quicker when starting with stored packs not full empty. I always plan on flying the next day but it ends up being closer to a week.

I have a 3D heli, I don't understand why it doesn't do 3D

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11-08-2013 12:28 AM  4 years agoPost 9
McKrackin

rrProfessor

Lucasville,Ohio

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I charge mine after every flight.
They are ready to go in the morning.

If I go a few days without flying and it looks like it will be a few more,I storage charge...more often,I just go to the driveway and hover each pack a few minutes.

Storage charge is when it rains for 5 days with no let up.

I literally never use the word literally right.

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11-08-2013 12:30 AM  4 years agoPost 10
McKrackin

rrProfessor

Lucasville,Ohio

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But being a nitro guy,I consider every cycle after 25 as a bonus.lol....50 or 60 would be killer and if they go 100,I'll have a party

I literally never use the word literally right.

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11-08-2013 01:01 AM  4 years agoPost 11
Retired2011

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Lee's Summit, MO

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I see a party in your future!
I'd love to join you, but you live to far away

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11-08-2013 01:05 AM  4 years agoPost 12
Retired2011

rrElite Veteran

Lee's Summit, MO

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I don't treat mine very well either!

Sometimes I charge them ahead - sometimes I don't...if I know I'm flying tomorrow I will for sure. Most of the time I only fly them to about 3.7 or so anyway.

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11-08-2013 01:16 AM  4 years agoPost 13
gcm2

rrApprentice

Ft Worth, TX

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If you are going to fly the next day why waste time storage charging that night and charging again the next day? You might as well just charge them. Batteries are designed to hold energy, a full charge over night does no harm
OK, I'll keep this advice in mind thanks. I have read in a couple of places that fully charged even for 10 hours can increase internal resistance or something... But mostly, if I'm not absolutely certain I will be flying tomorrow (you never know, weather changes, wife springs a crisis on me, plumbing backs up, etc.) I don't want to worry about them being all charged up and I can't fly!

TREX 700e, Goblins 500 & 570, DT520e, Gaui X3, Synergy E5

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11-08-2013 01:23 AM  4 years agoPost 14
dcasole

rrApprentice

Dacula GA

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+1 on what McKracken said ....

I charge mine after every flight .... and sometimes dont fly for a week

if I see the weather is going to be bad ( which is not to often in the south ) i knock them down

3 of my 6 turnegys 3s 40 C are over a year old with at least 100 cycles on them and they still fly great

One Sky lipo bit the dust recently but it as never a strong pack even when new

I am a nitro guy to ....lol

Dav e

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11-08-2013 04:16 AM  4 years agoPost 15
Gregor99

rrElite Veteran

Western Wa

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There's no reason to charge UP to storage after a flight. Unless you over discharged the pack, or you are putting the packs away for winter. Even then, its not really necessary.

If you have cell that drops from 3.7v to below 3.0v in 6 months, that cell probably has short. The cell and possibly the pack should be retired.

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11-08-2013 05:23 PM  4 years agoPost 16
gcm2

rrApprentice

Ft Worth, TX

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full charging lipos night before
So I understand it IS just fine to consistently charge up the night before (I charge on my Hyperions to 95%) with no adverse effects? Makes me nervous, but I welcome your feedback guys. Thanks!

TREX 700e, Goblins 500 & 570, DT520e, Gaui X3, Synergy E5

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11-08-2013 05:30 PM  4 years agoPost 17
unclejane

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santa fe, NM, USA

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To be honest, the only time where I've personally seen a visible adverse affect of leaving a batt fully charged was when I retired from helis this last time. I left the 2250mah 3S batt in my starter fully charged; I had crashed my 700N on the first flight so the batt had hardly been used. I brought the body bag home, put it and all the rest of the gear in a corner and never flew again.

When I opened the starter a year later, the pack had puffed and was difficult to remove.

So yeah it isn't good for them, but I think even over the long term leaving your packs fully charged for a few days here and there won't make any noticeable difference in their lifetimes. My 6S Align packs are now about 4 years old and I've done that a number of times. But they're still in good shape with hardly any noticeable loss in capacity.

I get nervous only after a couple days of them sitting around at full charge, so charging the night before... meh... no problem.

LS

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11-08-2013 08:20 PM  4 years agoPost 18
fenderstrat

rrProfessor

Aston,Pa

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Yeah theres a lot of mysticism,voodooo and misinformation about lipos.I dont know where the whole "lipos can only be left fully charged for a few hours"thing came from.And thats not aimed at anyone,there are a lot of guys who think leaving a batt fully charged for just a few hours does damage

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11-08-2013 09:47 PM  4 years agoPost 19
ZS-JAF

rrVeteran

Houston, TX

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The only time I have had a pack turn from usable to puffed is by leaving it fully charged for weeks. My theory is that by avioding fully charged storage packs will last longer. I also I would like my packs to last as long as possible due to cost of good packs.

I have a 3D heli, I don't understand why it doesn't do 3D

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11-09-2013 08:29 PM  4 years agoPost 20
kcordell

rrElite Veteran

O Fallon, MO

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I think that depends (leaving packs full causes puffy packs) on the manufacturer. I have left many packs on full charge over a winter (for summer models) and over the summer for indoor models with no apparent ill effects. The better the pack, the less chance of issues. IMHO.

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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HelicopterMain Discussion › Question about storage of batts
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