TaylorMade Putter

Callaway FT, more megapixels usually result in a more expensive camera. This is less true now than in older times,
Titleist 913 D3 Driver, (5+ years ago). Now you can buy 12mp to 16mp cameras for very low prices.

That means 4 series and 4 parallel,
TaylorMade Putter. 1S4P means the capacity is multiplied by four but the voltage remains the same,
Titleist AP1. 4S1P means capacity remains the same but voltage is multiplied by four,
TaylorMade JetSpeed Driver.