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 Jan 18, 2012, 10:54 AM They Call him Dead! United States, SC, Pawleys Island Joined Jul 2003 9,428 Posts I am sorry if this question has been asked over and over, but I have done a search and can not find an answer. How do I determine the amp rate at which I can discharge a particular lipo using my Icharger so as to put the lipo in storage? For example: I have a Gens Ace 3300 Mah, 6s, 25C lipo. Obviously it can theoretically discharge in the air at 72.5 amps. I am correct on that right? But what rate should I use to discharge it for storage?
 Jan 18, 2012, 11:25 AM Registered User Tallahassee, FL Joined Sep 2009 2,309 Posts The discharge rate you use will be limited by the charger, not the battery, unless you are using regenerative discharge. You don't say which icharger you have but if you look at the specs you will see the maximum discharge rate.
 Jan 18, 2012, 12:13 PM They Call him Dead! United States, SC, Pawleys Island Joined Jul 2003 9,428 Posts Thanks for the reply. I understand that the charger has a limit to the discharge rate. But I want to make sure that I do not discharge too fast and damage the lipo. So I am trying to find a formula that tells me how fast (as in how many amps) I can discharge a particular lipo safely. Now that you mention the specs, I own an Icharger 206B. Here are the pertinent specs: Maximum discharge power capacity: 20W Maximum regenerative discharge power capacity: 300W Maximum extern discharge power capacity: 500W @ 25V/20A What is "regenerative discharging" ? What is meant by "extern dishcarge"?
 Jan 18, 2012, 12:41 PM Registered User Tallahassee, FL Joined Sep 2009 2,309 Posts Discharging at the maximum internal rate of 20 watts will not harm your 6 cell pack. With a fully charged pack the rate will be less than 1 amp. Regenerative discharge takes power from your pack and uses it to charge a lead acid battery. External discharge uses some external load like resistors or bulbs to absorb the power being taken from the pack.
Jan 18, 2012, 02:49 PM
They Call him Dead!
United States, SC, Pawleys Island
Joined Jul 2003
9,428 Posts
Quote:
 Originally Posted by Turner2 Discharging at the maximum internal rate of 20 watts will not harm your 6 cell pack. With a fully charged pack the rate will be less than 1 amp. Regenerative discharge takes power from your pack and uses it to charge a lead acid battery. External discharge uses some external load like resistors or bulbs to absorb the power being taken from the pack.
Great info!

Oh I see on the discharge even though it allows me to set the amps in the discharge screen to higher than one amp, when I actually hit "go" it is only going to be able to pull of less than 1 amp
 Jan 18, 2012, 03:04 PM Registered User Tallahassee, FL Joined Sep 2009 2,309 Posts That's right. The amperage will depend on voltage but will always be limited to 20 watts. So divide 20 watts by the voltage to get approximate maximum amps that the chargers internal circuits can tolerate.
 Jan 18, 2012, 03:09 PM They Call him Dead! United States, SC, Pawleys Island Joined Jul 2003 9,428 Posts Thanks Again!!!!!!!
 Apr 07, 2012, 01:59 PM Registered User Joined Dec 2011 68 Posts hi I have been using genace 3cell 2200 mah 30c batteries, no problems 7 mos old and doing well. BUT THE GENSACE BATTERIES ARE NOW IMPOSSIBLE TO GET, ALWAYS BACK ORDERED. DOES ANYONE KNOW IF THE NANO TECH OR THE BLUE LIPO , OR WHAT BRAND LIPO IS A GOOD REPLACEMENT ANY INFO WILL BE APPRECIATED TOM
 Apr 07, 2012, 02:05 PM Space Coast USA Space Coast Joined Oct 2000 23,205 Posts Try HiCountry Hobbies - Billowy Power packs
 Apr 07, 2012, 02:06 PM They Call him Dead! United States, SC, Pawleys Island Joined Jul 2003 9,428 Posts sky lipo is as good or better
Apr 07, 2012, 05:44 PM
Space Coast USA
Space Coast
Joined Oct 2000
23,205 Posts
Quote:
 Originally Posted by dead sky lipo is as good or better
Please provide the discharge graphs for these packs that show that.
 Apr 07, 2012, 06:55 PM They Call him Dead! United States, SC, Pawleys Island Joined Jul 2003 9,428 Posts I can provide no scientific proof. Also I was reffering to Gens Ace. I did not see your post about Billowy packs. I do not know those. My comparison of Sky Lipos and Gens Ace is based on subjective opinions....
 Apr 07, 2012, 07:49 PM Space Coast USA Space Coast Joined Oct 2000 23,205 Posts Got it...
 Apr 27, 2012, 07:13 PM I need a bigger shed.. Australia, TAS, Launceston Joined Nov 2011 1,498 Posts Hi, what do you guys think of storing Lipos in my shed, where temperatures get to below freezing regularly on frosty mornings? I understand fridge is good to store at, and some people even put them in freezer, but I am worried of the temperature fluctuating daily whether it will have a bad effect. Other annoying thing with storing in those conditions is if I want to charge batteries in the morning I spose have to wait for battery to warm up before charging.
 Apr 27, 2012, 09:52 PM Space Coast USA Space Coast Joined Oct 2000 23,205 Posts Lipos can operate down to -20C so your storage area location should not be a problem. They should be warmed before charging. I think the magic number is 50F but you should check that.