Super Capacitor; Non-Rechargeable Battery; Rtc Supplied By A Gold Capacitor; Rtc Supplied By A Non Rechargeable Battery - Sierra Wireless WISMO228 Product Technical Specification & Customer Design Manuallines

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A non rechargeable battery
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A rechargeable battery cell

Super Capacitor

Estimated supply time with a 0.47F gold capacitor: 25 minutes (minimum).
Note: The maximum voltage of the gold capacitor is 3.9V.

Non-Rechargeable Battery

The diode, D1, is mandatory to prevent the non rechargeable battery from being damaged.
Estimated supply time with an 85 mAh battery: 800 hours (minimum).
WA_DEV_W228_PTS_002
Figure 37. RTC Supplied by a Gold Capacitor
Figure 38. RTC Supplied by a Non Rechargeable Battery
Rev 001
Product Technical Specification &
Customer Design Guidelines
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