YBX7000 EFB Start Stop Plus Batteries
YBX7055 (M42R) 12V 40Ah 400A Yuasa EFB Start Stop Battery
Capacity Ah (20-HR): 40 Capacity at 20-hour Rate (Ah): 40 Cold Cranking Performance (Amps) EN1: 400


  • Up to 270,000 engine starts
  • Designed & engineered for vehicles with advanced technology such as Start – Stop
  • Lithium carbon additive for improved charge acceptance & performance
  • Reduced fuel consumption & lower emissions
  • The recommended choice for standard ignition vehicles that make lots of regular short journeys such as taxis & delivery vehicles

Yuasa YBX® next generation automotive batteries are:

  • Original equipment (OE) quality, performance & specification
  • Fully maintenance free
  • Supplied charged & ready to fit
  • Designed with advanced safety features for ultimate peace of mind
  • Next generation battery technology developed with leading vehicle manufacturers
  • Optimised for the partial-state of charge performance required by vehicles with advanced technology
  • Developed with a lower self-discharge rate for longer shelf life
Tech Spec

Additional Information

Case Type JIS B20 EFB (M42R)
Voltage 12V
Capacity at 20-hour Rate (Ah) 40
Cold Cranking Performance (Amps) EN1 400
Mean Weight with Acid (kg) 11.5
Cell Layout 1
Terminal T1/T3
Recommended Charge Rate (Amps) 2
Water Loss W3
Charge Retention C2
Vibration V3
Endurance M1
Capacity Ah (20-HR) 40
Terminal Type T1/T3
Length (mm) 197
Width (mm) 128
Height (mm) 227
NCC Class N/A
Feature Range YBX7000 EFB Start Stop Plus Batteries
Container Feature
Terminal Type