A BCI Group GC8 SLI battery is a lead-acid battery classified under the Battery Council International (BCI) Group 8 designation, primarily designed for automotive Starting, Lighting, and Ignition (SLI) applications. These batteries feature standardized dimensions (e.g., ~10.25″ L x 7″ W x 7.5″ H) and a nominal voltage of 12V, delivering 450–600 CCA for reliable cold-cranking performance. Pro Tip: Always verify terminal polarity alignment (BCI GC8 uses SAE posts with top-left positive) before installation to prevent electrical system damage.
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What defines BCI battery group classifications?
BCI group codes standardize battery sizes, terminal positions, and capacities for compatibility. The GC8 classification ensures precise fitment in vehicles requiring compact, high-cranking-power SLI batteries. Key specs include ≤15 kg weight and electrolyte volume of ~3.2L. Example: A John Deere Gator UTV often uses GC8 batteries due to their vibration resistance. Pro Tip: Mixing BCI groups risks terminal corrosion—use manufacturers’ fitment guides.
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How does SLI differ from deep-cycle batteries?
SLI batteries prioritize short high-current bursts for engine starts, while deep-cycle variants sustain prolonged discharges. GC8 SLI units typically offer 500+ CCA but only 30–50 Ah capacity. Comparatively, GC8 deep-cycle models (rare) provide 80+ Ah. Table:
| Parameter | GC8 SLI | Deep-Cycle |
|---|---|---|
| Cycle Life | 300 cycles | 1,200+ |
| Charge Rate | 15–20A | 5–10A |
What vehicles use GC8 batteries?
GC8 batteries power small-engine vehicles like ATVs, compact tractors, and vintage motorcycles. Their 180–220 RC (reserve capacity) supports basic electrical loads during engine-off periods. For instance, a 1965 Ford Mustang with aftermarket audio systems often upgrades to GC8 for stable 12V supply. Practically speaking, verify OEM manuals—some golf carts repurpose GC8 despite original 6V configurations.
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FAQs
Only AGM/sealed types allow multi-angle mounting—flooded lead-acid GC8 models risk electrolyte leakage if tilted beyond 45°.
Is lithium conversion viable for GC8 applications?
Yes, but requires BMS reprogramming. Our LiFePO4 GC8 replacements provide 2,000+ cycles while cutting weight by 60%.
