What are the battery requirements for the 4100ES and when is an external battery cabinet required?

The 4100ES requires two 12 V sealed lead-acid batteries wired in series to provide 24 VDC system voltage [1].

These batteries must be identical in voltage, model, and approximate date of manufacture for proper operation [1].

An external battery cabinet, such as the 2081-9280, is required for 110 Ah batteries or whenever the battery size exceeds the internal cabinet's capacity [1].

For 110 Ah applications, the external cabinet must be close-nippled to the control panel and requires a 4100-5128 Battery Distribution Terminal Module for connection [1].

Additionally, 50 Ah batteries require a 4100-0650 battery shelf when installed in 4100ES cabinets (Page 33) [1].