Hmm 10 minute charge sounds nice. Almost worth reconfiguring all my cars to use A123's and buying another charger/balancer....nope. Maybe in future vehicles, for me. Definintely make sure the cells are properly held down. We don't need any accidents now. Although the cells
ARE fireproof if you
DO crash bad.
I would be careful with the ESC that close to the limit. Exceeding either the amperage
OR the voltage rating of an ESC can blow it up.
In case you were wondering how to tell the difference: Voltage makes it "pop" whereas amperage makes it "fizz".