[BrianG]

There are numerous threads on these A123 cells.

Briefly, the consensus is that they are much safer than lipos (case is a metal can rather than a foil wrap), can stand overcharging/discharging much better, and can charge at much higher than the standard 1C rate that lipos do.

However, they are heavier, have relatively low mAh rating, are sometimes hard to mount due to their size/shape, and use a non-standard per-cell voltage or 3.3v nominal and 3.6v max (compared to 3.7v nominal and 4.2v max for lipos).

2.3Ah @ 30C is 69A. To get higher max current, a 2p arrangment is commonly used.

They use a standard CC/CV charge profile, but due to the different votlage rating, you need a special charger that has a setting for a CC/CV threshold of 3.6v/cell. Many chargers now do have this though...

And that turbo module is not really recommended IMO. It is basically just a switching power supply that boosts the voltage. However, it has a power limit, and to get higher voltage output, it pulls more current from the battery. And then, there is efficiency loss. So, let's say you are using a 3s A123 pack (9.9v) with the module to get the standard 11.1v output of a standard 3s lipo, and want 50A output. The current the battery pack has to put out to the module is around 70A.