Quick overview from the supplier:
Baterie UPS 12V/ 65AH Yuasa NP65-12I-TW, 3-5 years
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https://www.yuasa.co.uk/batteries/industrial-view-all/np17-12i.html
Capacity at 20-hour Rate (Ah) 17
Capacity Ah (20-HR) 17
Length (mm) 181
Width (mm) 76
Height (mm) 167
Total Height (mm) 167
Weight (kg) 6.1
Nominal Voltage 12
Capacity Ah 17
