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LiIon, LiPo, NiCd & NiMh General General Battery Support


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Old 11-22-2014, 08:31 PM   #281
sierracharlie
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If my charger only reports in voltage, how do I know what mah I am putting back in. I fly a 450 mah battery for 4 minutes and the voltage is 7.6.
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Old 11-22-2014, 08:37 PM   #282
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You cannot tell. What charger do you have? A blinky charger? You need, at minimum, a charger like this.

$24

http://www.hobbyking.com/hobbyking/s...arehouse_.html

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Old 11-22-2014, 10:01 PM   #283
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Its a G.T. Power 606-d I had for my foam planks. I going to upgrade but it works good for my 450 and 2200 batteries. I just started using My RC Log . com and wanted to start keeping data on my batteries.
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Old 11-22-2014, 10:17 PM   #284
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Quote:
Originally Posted by Slyster View Post
You cannot tell. What charger do you have? A blinky charger? You need, at minimum, a charger like this.

$24

http://www.hobbyking.com/hobbyking/s...arehouse_.html

I read the link about that charger. What is funny is at the bottom it warns about buying clones of this unit. That there are copies being produced and sold out of China, and that it is dangerous buying clones. Pot-> kettle


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Old 01-26-2015, 12:33 PM   #285
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I've read the entire thread. My brain is swollen!! Lots of good info. I haven't seen anything on what to do with puffed lipos. How do I make them safe to dispose of?
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Old 01-26-2015, 12:54 PM   #286
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Discharge fully (I use two car 12v headlights in series) then cut off connectors and twist main leads together and put in you garbage can. Not recyclable. Not dangerous to landfill.
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Old 01-26-2015, 10:03 PM   #287
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Thanks Sly. Soldering a bulb.
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Old 04-13-2015, 07:12 PM   #288
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As a newbie, is there an easy way for me to figure out the fast charge, discharge rates for my 11.1 3S 2200mah. I have a X4 Hitec charger and it wants to know charge, balance charge, fast charge, and discharge rates. I know a safe charge is 2.2 but not sure about the other rates.

Is there charging and battery 101 somewhere in HF? I searched but was not successful

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Old 04-14-2015, 10:39 AM   #289
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The battery should list the max safe charge rate such as 3C, or 5C, etc. of course, 1C would be 2.2, 2C = 4.4, etc..

If it does not list that, then you would safely be limited to 1C unless the manufacturer says otherwise.
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Old 04-16-2015, 05:06 AM   #290
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Quote:
Originally Posted by D_Vail View Post
The battery should list the max safe charge rate such as 3C, or 5C, etc. of course, 1C would be 2.2, 2C = 4.4, etc..

If it does not list that, then you would safely be limited to 1C unless the manufacturer says otherwise.
The X4 also allows me to internally set a fast charge rate, discharge rate, and storage rate. How do I determine these rates of charge? Maybe I am over thinking this?
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Old 04-16-2015, 07:36 AM   #291
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Quote:
Originally Posted by Heli ascot View Post
The X4 also allows me to internally set a fast charge rate, discharge rate, and storage rate. How do I determine these rates of charge? Maybe I am over thinking this?
The hitec x4 will allow you to set up to a 6.0 amp Charge rate. To set a 5000 mAh to 1c charge rate, set the charger to 5.0 amps. To set a 2200 mAh battery to 1c rate, set the charger to 2.2 amps. To set a 2200 mAh battery to a 2c charge rate, set the charger for 4.4 amps, 3c rate would be 6.6 amps, but your charger will only go to 6 amps.
The charger will automatically stop charging/balancing when the battery reaches 4.20 volts per cell.
I made the mistake of setting the safety cutoff amperage in the x4 when I first got it, but it is not needed. It will stop charging when it is done.

To discharge, you set the desired end voltage, you can set up to a 1 amp rate on the x4.

To store batteries, set your battery voltage ie 22.2V(6S), and you can ssh up to a 1.0 amp storage charge rate.

For my lager packs like the 5000mAh I always go with the 1.0 amp rate for discharge and storage. For a small capacity pack, like the 800mAh on my small plane, I go with a lower discharge/storage rate

Hope that helps



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Old 04-16-2015, 08:22 AM   #292
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Yes thank you.
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