The FX-10 cabinet accommodates sealed lead-acid batteries up to 10 Ah (Page 1) [1].
While the system supports a maximum charging capacity of 24 Ah, an external battery cabinet is required for any batteries larger than 10 Ah (Page 1) [1].
The 12V10A (10 Ah) battery model may specifically require a BC-3 enclosure for installation (Page 66) [1].
