Have you tested charging the batteries with just that PCB alone?
Since it only seems to be a protection PCB not an actual battery management PCB
The wording for some of the protection PCB's for these batteries can be very misleading
"Charger PCB" - Although really this is only a protection PCB
Looking through ebay and various other websites it's pretty much impossible for me to source a charging PCB for an 11.1v pack - only laptop style power bricks which are normally used for higher voltage RC car LIPO battery packs.
This is the type of IC which would be suitable for charging such battery packs which you want to use: http://docs-europe.electrocomponents.com/webdocs/10e2/0900766b810e269b.pdf
Evaluation kit version of that IC: http://www.maximintegrated.com/datasheet/index.mvp/id/3105
If for some reason I am completely wrong then please school me about my errors :(
Yes and no. I am using one type of PCB in one amp, and another type in the other amp.
To clarify, Both battery management boards keep the cell pack from over discharging and over charging.
I am trying to test both to decide whitch one i prefer, but either one will work fine.
I have been away from this project for awhile, I will post an update soon.
Ok, I have been away for a few weeks, and have not been able to work on this much at all in that time.
My job sent me out of state and while i was away I simply did not have any spare time to work on this.
However, I am back now, and shortly I will be caught up on things at the office that piled up while I was away.
An update is in order! I have the new PCB designs pretty much done, but I am working on a couple of upgrades to the amp that i want to include in the PCB order to keep costs down.
The first is a digital POT that will allow not only volume control, but also allow adjustment of the op-amp and buffer bias settings from a single encoder.
The second is a small DC/DC converter board that will allow this amp to be powered from a USB port, and then paired with a small DAC for a neat little desktop amp.
Both of these are still early in development, but hopefully they will work on the first try.....