Yuasa SY50-N18L-AT / SY50-N18L-AT-BS 12V Yumicron Battery with Sensor
Capacity Ah (20-HR): 21.1 CCA @ -18C: 240 Cold Cranking Performance (Amps) EN1: 240


Personal watercraft, snowmobiles and ATVs make special demands - and YUASA's YuMicron Battery meets them head-on. The high-tech, power-boosting design also makes YuMicron ideal for accessory-laden touring bikes and modified vehicles.


  • Heavy duty glass mat resists vibration damage
  • Special thin Separator packs in extra plates, delivers up to 30% more cranking power than conventional types
  • Through-the-wall intercell connector minimises internal resistance, maximises power
  • Sulphate Stop curbs plate sulphation - and provides longer life

SY50-N18L-AT = DC / SY50-N18L-AT-BS = CP

Tech Spec

Additional Information

Cold Cranking Performance (Amps) EN1 240
Pack Type DC/CP
Capacity Ah (10-HR) 20
Capacity Ah (20-HR) 21.1
Weight with acid (kg) 6.5
Acid volume (litre) 1.4
Charge current (Amps) 2
Terminal Type 7
Length (mm) 205
Width (mm) 90
Height (mm) 162
NCC Class N/A
Feature Range YuMicron
Front Side Top
Assembly Figure