Side-by-Side Comparison
Electrical & Ignition Standards
Automotive Blade Fuses vs. Car Battery BCI Group Sizes
Comparing 2 standards across 15 specifications. 15 key differences identified.
Comparing:
Automotive Blade Fuses
Car Battery BCI Group Sizes
Automotive blade fuses protect 12V/24V/48V vehicle electrical circuits, standardized under ISO 8820-3 / SAE J1284 into six physical form factors (Micro2, Micro3, Mini, Low-Profile Mini, Regular ATO/ATC, and Maxi) using universal color-coded amperage ratings from 1A to 80A.
Lead-acid and AGM 12V starter batteries are standardized by the Battery Council International (BCI) and EN/DIN into group sizes defining physical box dimensions (length × width × height), terminal post orientation (top post vs side post vs recessed European DIN), hold-down ledge profiles, and Cold Cranking Amperage (CCA).
Specification Comparison Table
15 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
ISO 8820-3 / SAE J1284 (Blade Type) / SAE J2077 (Miniature) | BCI Standards / EN 50342 / DIN 72311 / JIS D 5301 |
|
Micro2 Fuse (Dual-Blade)
|
9.1 × 3.8 × 15.3 mm | 5A to 30A | Modern tight packaging standard | — |
|
Micro3 Fuse (Three-Blade)
|
14.4 × 3.8 × 18.0 mm | Dual circuits sharing one center power terminal | — |
|
Mini Fuse (ATM / APM)
|
10.9 × 3.6 × 16.3 mm | 2A to 30A | Common in 1990s–2010s vehicles | — |
|
Low-Profile Mini (APS / ATT)
|
10.9 × 3.8 × 8.7 mm | Ultra-short tabs flush with plastic housing | — |
|
Regular Fuse (ATO / ATC / APR)
|
19.1 × 5.1 × 18.5 mm | 1A to 40A | Universal benchmark standard | — |
|
Maxi Fuse (APX / MAX)
|
29.2 × 8.5 × 34.3 mm | 20A to 80A | High-current under-hood primary feeds | — |
|
Standard Operating Voltage
|
32V DC (Standard 12V/24V) / 58V DC (Specialty hybrid/48V mild hybrid) | — |
|
Primary Dimension Landmarks
|
— | Physical Length × Width × Total Height (including terminals) in mm and inches |
|
Group 24
|
— | 260 × 173 × 225 mm (10.25 × 6.81 × 8.88") | Standard Japanese/American SUV & Truck |
|
Group 35
|
— | 230 × 175 × 225 mm (9.06 × 6.88 × 8.88") | Honda, Toyota, Nissan, Subaru sedans |
|
Group 48 / H6 (DIN L3)
|
— | 278 × 175 × 190 mm (10.94 × 6.88 × 7.50") | Universal European/US modern vehicle standard |
|
Group 49 / H8 (DIN L5)
|
— | 353 × 175 × 190 mm (13.90 × 6.88 × 7.50") | Large luxury sedans, BMW, Audi, Mercedes, Porsche |
|
Group 51R
|
— | 238 × 129 × 223 mm (9.38 × 5.06 × 8.81") | Compact Honda Civic, Fit, S2000 (R = Reversed Polarity) |
|
Group 94R / H7 (DIN L4)
|
— | 315 × 175 × 190 mm (12.40 × 6.88 × 7.50") | Heavy-duty European crossovers & US pickups |