BOSCH ST Hightec Q85L (EFB) Battery

12V • 75Ah • 660CCA • SAE Posts – Right Positive

Product Overview

The BOSCH ST Hightec Q85L is a popular Enhanced Flooded Battery (EFB) for Mazda and Subaru start-stop vehicles. It delivers strong cranking power with better cycle stability and charge acceptance than conventional flooded batteries—ideal for frequent stop-start and urban driving.

Engineered for dependable performance and everyday convenience, Q85L provides reliable starts, solid accessory support, and a maintenance-free experience with no topping up required.

Key Features

  • EFB technology for improved cycle life and charge acceptance
  • Designed for start-stop systems common in Mazda & Subaru models
  • 660CCA for confident starting across varied climates
  • No topping up required – maintenance-free design
  • Good resilience to short-trip, stop-start driving
  • Labyrinth lid, polypropylene case, and B7 base hold-down for secure fit

Technical Specifications

Battery Type
EFB (Enhanced Flooded Battery)
Voltage
12V
Capacity
75Ah (20-hour)
Cold Cranking Amps (CCA)
660
Dimensions (L × W × H)
229 × 172 × 199 mm (container)
Total Height (with terminals)
222 mm
Approx. Weight
18.0 kg
Terminal Type / Polarity
SAE Posts – Right Positive (− +)
Base Hold-Down
B7
Case / Lid
Polypropylene / Labyrinth Lid
Reserve Capacity
125 minutes
Warranty (private use)
24 months

Why Choose BOSCH ST Hightec Q85L?

Q85L is a proven fit for many Mazda and Subaru start-stop platforms, pairing strong starting performance with enhanced cycling durability.

Backed by Bosch engineering, it supports modern safety and comfort systems while keeping ownership simple—no topping up required.

Data Sheet

Voltage12
CCA660
Amp Hour75
Length MM229
Width MM172
Height MM199
Terminal Height MM222
Warranty24
AssemblyPositive Right
Post typeSAE
Battery TypeEFB
Weight KG18
Model # Q85L
Barcode # 04047026257397

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Is the BOSCH Q85L suitable for Mazda and Subaru start-stop vehicles?
Yes. Q85L is commonly specified for Mazda and Subaru models with start-stop systems and moderate accessory loads.
Does the Q85L require maintenance?
No topping up required. It’s maintenance-free by design (EFB technology).
What are the key specifications of Q85L?
12V, 75Ah (20-hr), 660CCA, 229×172×199mm (container), 222mm total height, ~18.0kg, B7 base, SAE right-positive posts, 125min RC.
How does EFB differ from standard flooded batteries?
EFB offers improved cycle stability and charge acceptance—ideal for frequent stop-start and short-trip driving.
What is the private-use warranty for Q85L?
24 months (private use). Application and usage conditions may affect eligibility.

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