Distinction From Lead-Acid Starting Batteries



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KAPower Supercapacitor vs. Starting Batteries

KAPower vs. Lead-Acid Starting (SLI) Batteries

KAPower Supercapacitor / Ultracapacitor Lead-Acid Starting (SLI) Battery
KAPower
Supercapacitor / Ultracapacitor
Lead-Acid Starting (SLI) Battery
Energy Storage Physical Chemical
Life Long (15 - 20 Years) Short (1 - 4 Years)
Charge Rate (Time) Short (15 - 30 Seconds) Long (14 - 16 hours)
Discharge Rate (Time) Short (15 - 30 Seconds) Long
Energy Density Low High
Power Capability High (100 - 1000 Times Higher) Low
Maintenance None High
Operating Voltage Window 4 - 16 Volts 10.5 - 12.7 Volts
Cycle Life High (~1,000,000) Low (Average ~400)
Charging Circuit Simple Complex (Different Rates For Different Battery Types)
Internal Resistance Very Low High (Increasing With Age)
Self-Discharge Rate Very Low High
(+) Plate Corrosion Not Applicable Yes
(-) Plate Corrosion Not Applicable Yes
Acid Stratification Not Applicable Yes
Resting Time Not Applicable Yes
Disposal Problems Low (NO LEAD) High (Contains LEAD)
KAPower is a electrochemical capacitor (a.k.a. supercapacitor or ultracapacitor)