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LiIon, LiPo, NiCd & NiMh General General Battery Support


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Old 10-04-2013, 10:01 AM   #261
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If you are discharging... 8A would be 1C and is what would be ideal.. but you will find your charger cannot discharge anywhere near that amount. This is why if I need to discharge large packs I use a couple of 12v car headlamps in series. Then it takes 20-30 minutes. But you need to monitor the voltage carefully.. if you forget your lipo will go all the way down to zero
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Old 10-05-2013, 06:10 PM   #262
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Default ** LIPO BASICS ** Read me first!

The max that charger does is .9 amps even when set to 1 amp.
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Old 10-06-2013, 09:21 AM   #263
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So when discharging my LiPo or to Storage Charge them....it would be best to leave the set rate at 0.1a or would it be aright to bump that up to like .5a?
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Old 10-06-2013, 11:26 AM   #264
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Discharge as fast as you charger can. Think how fast a heli does it? A full pack in 4-6 minutes.
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Old 10-06-2013, 12:12 PM   #265
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Default Re: ** LIPO BASICS ** Read me first!

Im gearing up for the future cause it dont look like im going to be leaving this hobby so im going to purchase the 4010duo can you reccomend a PS that is a all in one unit I saw junsi had one the s1200 11v-24.5v 50A 1200w would that feed this charger or would I need 2 of them
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Old 10-06-2013, 12:16 PM   #266
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Normally I field charge with my 4010 and power it with two deep cycles in series for 24V (sometimes 3 for 36v) this way I get full output (although I've never needed it yet)

For home.. I use one of these... link below.. the $110 24v47A unit... and it works fantastic. Of course it's not enough to get full output on the charger but its enough for me.

www.feathermerchantrc.com
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Old 10-06-2013, 12:21 PM   #267
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Default Re: ** LIPO BASICS ** Read me first!

Did you have to put in a bigger breaker in your home to run it ....

Does it have the dc ground mod or would I have to do that myself ...

And the pin board that must be ground for power on and fan do I do that as well ...
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Old 10-06-2013, 12:25 PM   #268
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Default Re: ** LIPO BASICS ** Read me first!

I dont think as of yet ill get anything bigger that a 550 size I want to stay with one pack per flight maybe a 6s 600 but that is the limit but I want at least 6 packs which I figure would be enough to keep me up for a while and this charger will have room for me to grow into should I go any bigger down the road I do have some electronics schooling under my belt certified ac tech but I dont use it
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Old 10-06-2013, 12:44 PM   #269
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Default Re: ** LIPO BASICS ** Read me first!

Www.Lithiumpros.com/tag/lightweight-battery/

Slyster have you any knowledge of these
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Old 10-06-2013, 12:54 PM   #270
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Ive not heard of those. I just use $80 120Ah deep cycles. The 24v47A can run full out on a typical house circuit. I've not blown a breaker.
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Old 10-06-2013, 12:59 PM   #271
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Default Re: ** LIPO BASICS ** Read me first!

The have a 36v 40Ah lipo for 2500 with charger at 36lbs
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Old 11-18-2013, 05:12 PM   #272
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It just occurred to me Sly has been actively maintaining this thread for over two years. Not only HF members, but countless Google users have come here for good easy to understand answers to their Lipo questions, and gotten em.

Kudos Slyster! Thanks for 2 years of helping all of us Lipo rookies not burn down our houses, keep our batteries in good order, and save a few bucks in the process.
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Last edited by Sabooo; 11-18-2013 at 05:21 PM.. Reason: math.
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Old 12-16-2013, 03:58 PM   #273
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What about us folks with the LITTIE baby ones, 1s 25c ect...As it stands now I'm so confused about these dang lipos, 1c,1s,, 15c, 235 30c... I do understand the 1,2,3 = number of cells, also was told to NEVER charge these 1 cell greater than 30ma BUT the manual that came with the heli, says .6 max, in fact the charger defaults to .6 but I always scale down to .3. My bigger ones, 2 ea.1300ma (45-90c discharge)3s nano-tech and a 3s 1350 eflite 30c what are those charged at, Don't understand these formulas, is there a plain dummy's 101 explaination on all these diff ratings? This little heli-max says 1Wh on it

Sorry for being so dumb here but cant afford to keep e buyin batts every week. The charger I have for the bigger 3s batts is a dual charger, AC/DC min charge rate is .8, max is 5a. It's a Dynx 245 from Hobby Town. It doesn't have a storage charger on it. After readin these posts now I'm worried that I have ruined these 1300 and 1350 ones I have and haven't even used them yet, They came with a BL 300X I got so the first thing I did was to charge them and put them away. What is the best way to DS them without running the heli, (cant fly it yet)

Thanks for the advice folks
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Old 12-16-2013, 04:01 PM   #274
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It's easy (see first post).. if the packs are 1300mah.. just charge at 1.3A for a 1C charge (1 hour) or 2.6A for a 2C charge (1/2 hour).

Just don't store them full. Your charger must have a storage charge or discharge feature?? If not get one that does. Don't over discharge either.. get a cheapy cell spy meter to see what each cell is at (or your charger should show each cell as well on the screen?)

Read this entire website.. very valuable.

https://sites.google.com/site/tjingu...arging-how-tos
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Old 09-04-2014, 02:02 PM   #275
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I know this has been gone over, but in reading through many of the posts in this thread and in others, I think there is still (and always will be, frankly) some confusion with C ratings and "what amperage should I charge at?"

mAh = milliampere-hour (sometimes just abbreviated "milliamp")

milli (m) just means thousand. So, a 1000mAh battery = 1 amp-hour (Ah)

I've often been a bit confused as to why the standard way to talk about a battery is in milliamps, but when talking chargers you always hear amps. Just pick one, mmmmm-kay?

"C" rating is just the multiplier for how much to charge or discharge at. Discharge is the primary "C" rating you see on the battery (25C, 45C, etc...) Typically, your max charge rate will also be labeled on the battery. Most of my batteries are rated for a 3C charge. So, for my 2200mAh 3cell batteries, that's 6.6 amps (2.2amps * 3 = 6.6). That's the number you plug into your charger.

The only time you need to keep the voltage (i.e. the number of cells you have) in mind is when you are telling the charger what kind of battery you have (cell count), most non-crap chargers will automatically set the voltage for you (~3.7V per cell). Once that is set, forget about it (more or less) and worry more about the amps you're stuffing into the battery.
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Old 09-28-2014, 05:44 PM   #276
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Ok another confused newbie. I'm flying micros right now. First post tells me to store my battery at 50% (3.8v-3.9v per cell). These 1S batteries are 3.7v. They are 150mah. Do I just set my charger to 75mah for a storage charge? I'll keep reading but would like some input from the pros before I ruin my 6 batteries. Trying to learn as much as I can now before I get into the bigger helis and more expensive batteries. Thanks.
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Old 09-28-2014, 06:09 PM   #277
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What charger do you have?

You do a storage charge. Charges have that setting.. they bring the charge up or down as needed. Use .2A or so current setting.
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Old 09-28-2014, 06:13 PM   #278
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It's an Onyx 235. On loan from a friend. I'll try to find the storage feature on it. Tx.


Don't see that feature on this charger.
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Old 10-02-2014, 02:15 PM   #279
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Hi everyone
I went through the thread and registered the valuable comments. I wanted to know if I fly my fully charged batteries down to 3.8v per cell, than is it necessary to hook them to the charger for storage level again or there is no need to do so as the cell count is already at 3.88v per cell.

thanks
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Old 10-02-2014, 02:20 PM   #280
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I usually end around 3.80v/cell (sometimes as low as 3.75v) and leave them... good enough. I believe a good storage ranges from around 3.7v to 3.9v)
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