Recommended Battery Pack - SimCom SIM548C HD V1.01 Hardware Design

SIM548C Hardware Design
It is recommended that the battery internal resistance should not exceed 70mΩ and the
internal resistance include battery and protection circuit of battery pack should not exceed
130mΩ.
The battery pack must be protected from reverse pole connection.
The Li-Lon/Polymer battery charge protect parameter is required as following table
Table 8: recommended battery protect circuit parameter
Item
Over-charge protect threshold.(V)
Released Voltage from Over-charge(V)
Over-discharge protect threshold(V)
Released Voltage from Over-discharge(V)

3.5.2 Recommended battery pack

Following is the spec of recommended battery pack:
Table 9: Spec of recommended battery pack
SIM548C_HD_V1.01
Min. Typ.
4.25 4.3
4.1
2.2
2.35 2.4
34
Max.
4.35
4.2
2.35
2.45
09.05.2008