The MS-9200UDLS uses sealed lead-acid batteries with a minimum capacity of 7 AH (Page 15) [1].
The standard control panel cabinet is designed to house and charge two batteries up to 18 AH (Page 14, 163) [1].
An external battery cabinet and a separate charger, such as the CHG-75 or CHG-120F, are required for any batteries larger than 18 AH (Page 19, 163) [1].
Common external enclosures include the BB-26 for batteries up to 26 AH and the BB-55F for larger requirements up to 120 AH (Page 21) [1].
