AT&T E5900B - Manual (Page 49)

47
Appendix
Charging spare batteries
Optional spare batteries (sold separately) can be kept charged in the base, for quick
replacement when handset batteries become depleted.
In the event of a power failure, the charged batteries in the base will allow you to
make and receive calls from the cordless handset for up to 2.5 hours.
Spare batteries require at least 20 hours to reach full charge.
Slide latch left to open battery drawer
Insert spare batteries,
then close drawer
Caution: Use only AT&T AA NiMH
rechargeable batteries. Do not
use AA alkaline batteries.
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