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CCS/TIDA-01556: MPPT with BQ25895

Part Number: TIDA-01556
Other Parts Discussed in Thread: MSP-EXP430FR4133, BQ25895

Tool/software: Code Composer Studio

We purchased the MSP-EXP430FR4133 and connected as instructed in the guide to our BQ25895 demo board, but still haven't got it working for some reason. Not sure on that yet, but had a couple of other questions before I go too far.

Our product incorporates ~13W of solar (14V OCV) and 3x 3.7V LiON batteries in parallel. 

After watching the training video I wondered if you would suggest a method of charging with the solar panels when the solar is in motion or if the battery is being used heavily by the system? I understand that the algorithm uses the voltage in and the charge current to constantly improve the power and that it works best when stationary. I'm thinking that if our system is being used and its getting fluctuating energy from the solar, it may give false info to the algorithm and perform badly. Would you recommend that we switch from the P&O method to F.OCV method when the system is in non ideal conditions? We could monitor our motion sensor as the trigger to switch modes I'm thinking.

Second question. If we still want to use the battery charger with a standard USB charger, would you recommend we use an external Mux controlled by the CPU to switch between solar/USB sources? Any other alternatives to using a mux?

Best, John