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4 cell Li-Ion with LTM8055/LTM8064 ?

Hi, I was going to use the LTM8062A as my 4 cell battery charger but for system efficiency I think I want to switch to the LTM8054 or LTM8055.  Are there any recommended designs or red flags I need to know before jumping in?  

It looks like I can set the Iin and Iout resistors to try and get a behavior where I don't kill batteries.  The supply is going to be controlled with some logic by an FPGA I have so I can control the enable and keep track with a timer.  I have system information available to me for temperature and voltage/current measurements.

The power flow is something like this:

USB PD3.0 -> LTM8054 -> 4 cell battery

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