E-Medic Silence TP 2 User Manual page 19

. The internal battery (optional)
For those systems installed with internal battery, below is the specification.
Battery cell type
Configuration
Typical capacity
Minimum capacity
Nominal voltage
Energy
Charge voltage
Charge time
Battery life
During the transportation, we suggest you to disable battery
. Power off the system
. Disconnect the DC power (or AC power cord)
. Press the "speaker volume (+)" button for 10 seconds
Next time when you connect the AC power and power on the system, the
battery will be enabled automatically.
Lithium-Ion rechargeable battery cell (2000mAh/cell)
2S2P
4000mAh (for two cells)
3800mAh (for two cells)
7.3 V (average)
29.2 Wh (typical) / 27.74 Wh (minimum)
8.4 V (typical)
.System on (1A): 200 minutes
.System off (2A): 120 minutes
Discharge (> 10 minutes) for 300 times, < 70% capacity left
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