LFP YT4XL-BS LiFePo4 Battery For Motorcycle Starting Lithium-ion Product Overview WBD POWER LFP4L-BS is a direct replacement for YT4L-BS lead-acid motorcycle starter battery. Adopting Grade A LiFePO4 cells and built-in smart BMS, this 12.8V 3Ah battery delivers 120A high CCA cold cranking current for fast, reliable engine ignition. Ideal for 50–150cc scooters, pit bikes, mopeds and mini ATVs. Lighter, safer and longer-lasting than traditional lead acid batteries, it fully