Is it safe to draw current from a 11.1 li-po battery pack while they are charging. If the battery is connected to a balancing charger can it be used to power an atty while it is charging or will it screw up the charger or worse burn the battery?
Question for the experts??
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i tested like that but with 18650 li-ion. atty will draw current from battery pack and from charger. If charger have a maximum current set it`s ok .i think it works
Agree. Chargers always have current limit. Also, when you load a battery, its voltage just drops a little, nothing more. For charger it is safe.
The problem is that it is 3 cells and each is balance as they charge. My understanding of the balancing circuit is that it cuts the negative to the cell that is getting overcharged stopping the charge to that cell until the others catch up. I am afraid that a hi drain like an atty would confuse the balancing act.
When you use a notebook switched in a socket, you get the same - balancing charge and discharge simultaneously 
When you use a notebook switched in a socket, you get the same - balancing charge and discharge simultaneously
You are so right, now you got me thinking of if I can remove the charging circuit from old laptops for modding..lol
I thought about that as well but the power environment of most laptops is integrated into the mobo so it can better interface with the OS's power options.
Laptop batts are more sophisticated. If you've ever opened one, you'll find a lot of electronics in there along with the cell pack. A laptop actually switches over to the external supply when available and isolates charging from loading. Cell phones do the same thing.
In any case, it shouldn't be an issue to load the pack while the balancing charger is going. As already mentioned, the charger will just run up to the current limit. It will provide some of the current powering the atomizer and the pack will pick up the rest of the load.
The only issue I can see is if the charger has any safety features that could get confused by the sudden change in loading. It that case, the charger would probably just shut down with some kind of fault indication. Depends on the charger, you'd have to try it and see.
In any case, it shouldn't be an issue to load the pack while the balancing charger is going. As already mentioned, the charger will just run up to the current limit. It will provide some of the current powering the atomizer and the pack will pick up the rest of the load.
The only issue I can see is if the charger has any safety features that could get confused by the sudden change in loading. It that case, the charger would probably just shut down with some kind of fault indication. Depends on the charger, you'd have to try it and see.
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