Panasonic KX-TGM420 Operating Instructions Manual page 31

Panasonic Ni-MH battery performance
Operation
In continuous use
Not in use (standby)
*1 If eco mode is on and booster is off.
Note:
• Actual battery performance depends on usage and
ambient environment.
Handset battery installation (for replacement)
• USE ONLY rechargeable Ni-MH batteries AAA (R03)
size (A).
• Do NOT use alkaline/manganese/Ni-Cd batteries.
• Confirm correct polarities (+, -).
Operating time
13 hours max.*1
9 days max.*1
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