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othello · 12:32 PM

The german manual can be found here. I know this won't be of much use for you. But there is a note concerning using the BK ESCs at their maximum rated voltage:

Basic translation:
Be carefull when using the max cell count (20 cells) that you won't use them fresh from the charger. Those cells could be above 1.2V.

So the max voltage should not exceed 20x1.2V = 24v. A 6s lipo is at 25,2v fresh from the charger. This could mean trouble. As they also state that they can determine the max voltage the ESC was subjected to when you send it back to BK. Guess it's at your own risk. I know at least of one guy in germany who fried his BK 9920 with 6s lipos. Not on his firt run, but after a while. If i were you i would only use it with 5s max. It's never a good idea to push Esc to their voltage and/or amp limit.

	(#6)
othello HV basher Offline Posts: 392 Join Date: Jun 2007 Location: Austria (Europe)	01.05.2008, 12:30 PM The german manual can be found here. I know this won't be of much use for you. But there is a note concerning using the BK ESCs at their maximum rated voltage: Basic translation: Be carefull when using the max cell count (20 cells) that you won't use them fresh from the charger. Those cells could be above 1.2V. So the max voltage should not exceed 20x1.2V = 24v. A 6s lipo is at 25,2v fresh from the charger. This could mean trouble. As they also state that they can determine the max voltage the ESC was subjected to when you send it back to BK. Guess it's at your own risk. I know at least of one guy in germany who fried his BK 9920 with 6s lipos. Not on his firt run, but after a while. If i were you i would only use it with 5s max. It's never a good idea to push Esc to their voltage and/or amp limit. Brushless 1:5 custom 4wd Baja based on 1:8 truggy chassie Jazz 55-10-32, Neu 1515/2Y (1100kv), 9s2p A123 (27v), up to 3.1KW Latest video with eagletree Data inserts: Run on asphalt Last edited by othello; 01.05.2008 at 12:32 PM.