LFM vs LFX - What's the difference?

SHORAI Lithium-Iron (LiFePO4) Powersports battery w/BMS, 4.5Ah 13.2V, "A" polarity, Case Type 5, Length 5.28" Width 3.15" Height 6.30". Shorai Batteries require a charging system output of 13.1 Volts or higher at idle, and must not exceed 15.2 volts at maximum output.

 - NOTE - Some recent 14 series batteries were labeled with an incorrect CCA rating.  ALL 14 series LFM batteries have a CCA of 210.

Case size #5, 134mm length, 80MM Width, 160mm height

Specifications and Dimensions

Part +	Voltage Pb Eq	Polarity	W/HR	A/HR	CCA (A)	Weight (KG)	Weight (LBS)
LFM14A5-BS12	12V		59.4	4.5	210	1.032	2.27