Siemens SL45i Battery and Performance

Battery and Performance

The SL45i was equipped with a removable Li-Ion 540 mAh battery, providing up to 200 hours of standby time and approximately 4 hours of talk time. For those seeking extended use, an upgrade to a slim extended Li-Ion 1000 mAh battery was available, which extended the standby and talk times to 350 and 7 hours, respectively. This range gave users reasonable performance and freedom from frequent recharges, aligning well with the power-efficient needs of the device's limited features.