Unidentified IC Circuits

Hello, I'm taking apart a powerIT! Lithium ion battery portable power supply.

The PCB board is labeled: 94V-0 E318500 HK-500W-V30 Fubing 2015

Anyway, I can't identify many of the ciruits, but they seem to have a prefered supplier. I say this because they mostly have GZ in the part numbers.

An example would be: 358 GZ448

I think this one might be an op amp circuit.

Anyway, What company uses GZ in there part numbers? Where can I track these? Maybe the PCB board as a whole has some documentation. Where can I look for that?

Thanks.

by Cyndaquil
February 14, 2021
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