Features: High quality and high reliability. Long service life Exceptional deep discharge recovery performance. Wide operating temperature range Product Description Model: SW435(4V3.5AH) Nominal voltage: 4V Nominal capacity (20hr): 3.5Ah Dimension Length: 35mm Width: 90mm Height: 60mm Overall height: 66mm Weight: 0.45kg Terminal: T1 ABS or Flame retardant ABS containers