Yes, clearly 4 shown! Hence,not a single battery mod. Its a 2S2P.

However.... also an error with that pic as well!

As... it shows the batteries as apparently going in the same way! Positives down... Which is NOT right!

You DO NOT have the negatives all towards the removable battery door as pictured!

It would in fact be, positives on top, towards removable door and negatives on the bottom, towards removable door.