Long Charge Times??

[Inch High]

Hi all

I'm using the BC6 to charge my FP4900mah Lipo. Am about 13 flights in. When I first started charging it, charge times were around the 70min mark, putting back 3000. Now, charge times have doubled, and I'm putting in around the same amount................ I went through the settings on the charger and all seem fine, not cutoff or things like that. I have set all the safety ranges so I'm not going to blow the thing up.

Anyone had simillar experiences??

Cheers

[Raydee]

The more out of balance the cells become the longer the charge times will be. My set of 4s packs are getting the same way. Try giving them a low current charge and let them balance real good and see if that helps (seemed to help mine a bit) Also don't be afraid to cut off the charge at 90%, just make sure you watch your flight time.

[MrMel]

Doenst the BC6 have a QuickCharge and a FullCharge mode? I usually run QuickCharge (about 97%), FullCharge takes a good while longer for those last 3%.

[DebianDog]

Out of balance/Bad packs take longer to balance is the key. ;)

A full charge should take a bit longer than an hour but not that much.

[Inch High]

Thanks for the input guys.

Gave it a good balance, and got the charge time down to around 90 minutes. Is that the average time it should take a 4900 FP 22.2V. Am putting back about 3200.

I will check out that fast charge. Will crack out the manual.

Cheers

[dlmcmichael]

If I am not mistaken, the BC-6 has a max output of 50 watts. This would mean you could only charge your 6 cell 22.2 volt battery at about a 2.0 amp rate which would make the 90 minute charge time sound correct (2,000 milliamps per hour X 90 minutes = 3,000 mah's).
David

[Inch High]

Thanks David.

Here I was thinking that my $370 battery was a dud! I will stick with the longer charge time, well until I get a better charger that is :)

[DebianDog]

yeah 2 amps explains a lot :lol:

Most people charge 1 which would be 4.9 amps