Panasonic WX-ST200P Mode D'emploi page 16

Inserting the battery
⚫ When recharging Ni-MH batteries, only use the original charger
(WX-SZ200P). The charging time depends on the battery type and the
specific use situation, but at longest it will be around eight hours.
⚫ Some batteries may not perform well with this product. If possible, use one
of the recommended batteries. The recommended batteries are as follows.
Rechargeable battery: BK-3MCCA Panasonic Ni-MH AA-size battery
Dry-cell batteries:
16
LR6PA Panasonic alkaline AA-size battery
LR6XE Panasonic alkaline AA-size battery