RFBattery vs. Super Capacitor: Key Differences Explained
battery
super capacitor
energy storage
capacitor
lithium ion
Advertisement
This article compares batteries and super capacitors, highlighting their key differences. We’ll focus on Lithium-Ion batteries for our comparison with super capacitors.
Battery (Lithium-Ion) vs. Super Capacitor: A Detailed Comparison
The table below summarizes the key specifications of Lithium-Ion batteries compared to super capacitors:
| Specifications | Battery (Lithium Ion Type) | Super Capacitor |
|---|---|---|
| Charge time | 10 to 60 minutes | 1 to 10 seconds |
| Cycle life | 500 and higher | 1 million or 30000h |
| Cell voltage | 1.2 to 4.2 V | 2.3 to 2.75 V |
| Specific Energy in Wh/Kg | 100 to 200 | 5 (typical) |
| Specific Power (W/Kg) | 1000 to 3000 | Upto 10000 |
| Service life (mounted on vehicle) | 5 to 10 years | 10 to 15 years |
| Charge temperature | 0 to 45 o C | -40 to 65 o C |
| Discharge temperature | -40 to 65 o C | -20 to 60 o C |
| Form factor | large | Small |
| Weight | 1 g to >10 Kg | 1 to 2 g |
| Pros (i.e. Advantages or benefits) | • Power density | • Long cycle life |
| • Storage capability | • High load currents | |
| • Better leakage current than capacitors | • short charging times | |
| • Constant voltage than can be turned OFF and ON | • excellent temperature performance | |
| Cons (i.e. disadvantages or drawbacks) | • Limited cycle life | • Low specific energy |
| • Voltage and current limitations | • Linear discharge voltage | |
| • long charging times | • High self discharge | |
| • more temperature sensitive than capacitors | • High cost per watt |
Circuit Symbols
Here are the circuit symbols for batteries and capacitors:
