Quick overview from the supplier:
Baterie UPS 12V/ 4AH Yuasa NP4-12-TW, 3-5 Yeras
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https://www.yuasa.co.uk/np4-12.html
Capacity at 20-hour Rate (Ah) 4
Capacity Ah (20-HR) 4
Length (mm) 90
Width (mm) 70
Height (mm) 106
Total Height (mm) 106
Weight (kg) 1.75
Nominal Voltage 12
Capacity Ah 4
