Product rebrand is taking place across 2019. Please note that the label and specification may vary from the image and product data shown.

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