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BQ24650: solar charger with 3S Lithium battery pack with BMS - when BMS disconnect battery to protect it

Part Number: BQ24650

Hi, 

I have a problem with BQ24650 solar charger buying from Ebay for my project. 

The problem is when battery is flat, BQ24650 doesn't start charge again automatically. I think battery pack was disconnected by BMS. 

As I know BQ24650 should have battery but in that case battery pack was disconnected by BMS circuit.

In that situation, I disconnect solar cable and put it back then BQ24650 start charge again. 

Anyone know how to charge again automatically? 

Thank you in advance.