# Why Low Leakage Current Matters in Coin Type Supercapacitors
In backup circuits, capacitance is not the only specification buyers should consider. Leakage current can directly influence standby time and the reliability of a low-power circuit. For smart meter backup, RTC backup and memory backup applications, a low leakage supercapacitor helps reduce unnecessary power loss during standby.
## Buyer pain point
Many buyers first ask for a 5.5V coin type supercapacitor by voltage and capacitance only. But after testing, they may find that backup time is shorter than expected. One possible reason is that leakage current is higher than the circuit can accept. This is why sample testing is recommended before bulk order.
## Where low leakage is important
Low leakage current is especially important in RTC circuits, memory backup systems, smart meters, gas meters, water meters and small electronic devices. These applications do not always need high power output, but they do need stable energy retention and predictable backup time.
## What buyers should send
To help check a suitable model, buyers should provide rated voltage, capacitance, target backup time, load current, operating temperature and available PCB space. If an original model is being replaced, send the original part number and datasheet so that a replacement supercapacitor can be compared more accurately.
## LORIDA support
LORIDA supports 5.5V coin type supercapacitor selection from 0.1F to 4F, including common options such as 0.47F, 1F and 1.5F. We can help customers check sample availability and support model discussion based on application requirements.
## Need Support?
Need a low leakage supercapacitor for memory backup or RTC backup? Send your voltage, capacitance, backup time and application. LORIDA will help you check a suitable option.
