Sierra Wireless AIRPRIME WISMO218 - Manual (Page 71)

WA_DEV_W218_PTS_002 Rev 006 April 29, 2010 71
Product Technical Specification &
Customer Design Guidelines Interfaces
3.16.3.3. Rechargeable Battery Cell
Figure 35. RTC Supplied by a Rechargeable Battery Cell
Rechargeable battery cell: Sanyo ML614
Estimated range with fully charged 3.4mAh rechargeable battery: at least 7 days.
Caution: Before battery cell assembly, ensure that cell voltage is lower than 3.0V to avoid damaging the
AirPrime WISMO218.