|Jul 07, 2004, 09:28 AM|
Joined May 2000
Is 3 volt OK when discharging LiPo
I would like to see how much capacity there is left in my
TP 7800mah 3s4p. My charger can discharge with 5 amps.
Is 9 volt cutoff voltage OK? How low before damage?
|Jul 07, 2004, 09:38 AM|
3v [i]off[/] load is OK, but really, its better to measure the voltage you have after flying, and then estimate from one of the published discharge versus votage charts.
If you take the fully charged voltage as about 4.2v, and as 'flat as you dare' at 3v, then e.g. 3.5v off load is (3.5-3)/(4.2-3)=41% capacity left. To a first approximation.
Its not QUITE accurate since the discharge curves are curves, not straight lines. But its near enogh for practical thigs like 'how near flat am I after ten minutes flying?'
|Category||Thread||Thread Starter||Forum||Replies||Last Post|
|OK to Use BL Controller for Discharging LiPo's with Automotive Bulbs?||green66||Batteries and Chargers||6||Nov 23, 2005 08:37 PM|
|Lipo Cell Voltage Rise when Discharging||hall woo||Batteries and Chargers||3||Jan 03, 2005 07:07 AM|
|wattage mig balance is 3-3/8 ok?||Cliff Smith||Electric Ducted Fan Jet Talk||0||Sep 21, 2003 08:13 PM|
|3 cell TP 2100's Lipo's in a Tantrum??||ChrisD||Parkflyers||14||Sep 03, 2003 10:53 PM|
|AXI 2808/20 and Jeti 30-3 esc...OK together?||AMTJIM||Power Systems||7||Jul 28, 2003 03:05 PM|