[NSRCA-discussion] Battery discharge/storage question

[Keith Hoard]

I take my batts to the field at 50% and leave the field at 50% charge. If I can't do that, then I discharge when I get home. My batts seem to last a long time. 

The (dis)charger is supposed to get hot, that is where the energy from the battery is going - into the heat sink. That's Ok, my PL 8 gets hot too. 

The PL8 can only discharge 100 watts by itself, but can do much higher if it is using "regenerative" discharge - dumping your LiPo's charge back into a lead acid battery. I don't know if the 10X has that capability or not.  Otherwise I'd just keep using the low discharge rate, or plan your flying day to end with a storage charge. 

Wow, that was a lot of typing to do on a phone!!

Sent from my iPhone

On May 8, 2013, at 11:15, "Bob Kane" <getterflash at yahoo.com> wrote:

> I have had to abort a couple of planned flying sessions so far this spring due to weather.  I have read that lipos should not be left at full charge for any significant length of time. So what is a significant length of time?
> 
> Hours?  Days? Weeks?
> 
> My Turnigy 10XS charger has a discharge/storage mode, but the maximum discharge current is 1 amp. It takes a couple of hours to bring a 10S pack down to storage level, and the charger gets pretty warm(!) during the discharge.  Up to now I have only worried about discharging the pack for long term storage.
> 
> If leaving the cells fully charged for more than a day or so is bad, I am considering building a dedicated discharger, there are some pretty simple yet effective designs on RCU.
>  
> Bob Kane
> getterflash at yahoo.com
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