| Model No. | STZ-5S | 
| Nominal Voltage | 12V | 
| Rated Capacity (10 hours rate) | 4 Ah | 
| Dimension | Length 113 mm Width 69 mm Height 89 mm Total Height 89 mm  |  
| Approx. Weight | 1.38 kg±3% | 
| Charge Current (A) | 0.4 A (14.4V constant voltage charge) | 
| Capacity | 10 hours rate (0.4 A to 10.5V) – 4 Ah 5 hours rate (0.8 A to 10.2V) – 3.4 Ah 1C (4 A to 9.6V) – 1.8 Ah 3C (12 A to 9.6V) – 1.5 Ah  |  
| Cold Cranking Amperes (-18°C) | 45 A | 
| Internal Resistance (at 1KHz) | Approx. 2.3m | 
| Operating Temperature Range | Charge – 0° (32°F) to 40°C (104°F) Discharge – 30°C (-22°F) to 50°C (122ºF) Storage – -15° (5°F) to 40°C (104°F)  |  
| Life Expetancy (Cycle Use) | 60% depth of discharge 250 Cycles 30% depth of discharge 400 Cycles  |  
| Charge Retention (self-discharge life at 20°C (68°F) | 1 month = 92% 3 month = 90% 6 month = 80%  |  
| Warranty | 6 month | 
| Case Material | ABS |