ORIGINAL: digitech
ORIGINAL: Xantos
HI,
I have been flying Duralite in all my jets till now.
Right now I have 2 X 4000mA Rx packs PPD-07404's which seem to be a problem
Mfg Date Mar7 - 2005 and June 21-2004
Both have gone thru only 24 and 30 charge cycles each.
Both the packs come off charge at 8.1 to 8.12V (Black lead)
With a 1 amp load the voltage drops to 7.1V (Black lead)
The instructions state 8.2V fresh off the charger and 7.5V (black lead).
Are these batteries safe to use ? Is there any other way to establish the capacity ?
All my jets are configured with a single 4000mA Rx pack therefore there is no redundancy if it fails.
If stop fly voltage is 6.9V with a 1amp load and freshly charged batteries show 7.1v with 1amp load there is very little margin.
Also although instructions state about 6hrs for a full charge the LEDs on the charger do not go off for atleast 10hrs - Is this normal ?
Nandan
get a balancer and a decent Charger for it
a lipo is full at 4.2 volts so it should be 8.4 for 2 cells
i think you have a balance problem between the 2 cells.
the load is normal , get a charger that counts whatever goes in.
use a balancer after about 10 cycles.
Does the same hold true for the Duralite LI-ION packs?