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Distinction From Lead-Acid Starting Batteries
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KAPower Supercapacitor vs. Starting Batteries
KAPower vs. Lead-Acid Starting (SLI) Batteries
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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) |
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