The SKB SK4-6 is a recombination lead acid battery — commonly described as hermetic or sealed — with 2 cells and a nominal voltage of 4 Vdc. It delivers 6.0 Ah capacity and a 15-minute battery power of 34 W (17 W per cell), making it suitable for general backup and anti-blackout uses.

The recombination technology allows approximately 200–300 charge cycles at 100% depth of discharge. At 30% of capacity, the battery reaches 1,000 cycles. Charging must be carried out with a constant-voltage charger at the values marked on the battery; the battery must not be left in a discharged state after use.

Key Features

• Sealed recombination lead acid construction — 2 cells
• 4 Vdc nominal voltage, 6.0 Ah capacity
• Faston 4.8 mm terminals with layout 2
• 200–300 cycles at 100% depth of discharge; up to 1,000 cycles at 30% capacity
• EUROBAT Classification: 3–5 years Standard Commercial
• Usage: General, Anti Blackout

Product Benefits

• The recombination (sealed) design prevents acid spillage and requires no water top-up, making it maintenance-free in installed applications
• A 34 W 15-minute power rating confirms sustained delivery during short outages, not just peak pulse capability
• Memory retention during battery replacement is not a concern — the sealed construction allows normal handling without leakage risk
• The EUROBAT Standard Commercial rating provides a documented lifecycle expectation for planning maintenance schedules

Technical Specifications

• Number of Cells: 2
• Voltage: 4 Vdc
• Capacity: 6.0 Ah
• Battery Power (15 min): 34 W
• Power per Cell (15 min): 17 W
• Terminals: Faston 4.8 mm
• Terminal Layout: 2
• Dimensions (L×W×H / HT): 70×48×98 (101) mm
• Weight: 0.7 kg
• Usage: General, Anti Blackout
• Buffer Charging Voltage: 4.50–4.60 Vdc
• Cyclic Charging Voltage: 4.80–5.00 Vdc
• Standard Charging Current: 1.80 A
• Max Discharge Current (5 sec): 105 A
• Discharge Temperature: -10 to +60 °C
• Charging Temperature: -20 to +60 °C
• Storage Temperature: -20 to +60 °C
• EUROBAT Classification: 3–5 years Standard Commercial

Why You'll Love It

• Faston 4.8 mm terminals are a standard connector format, compatible with a wide range of alarm, UPS, and emergency lighting systems
• The compact dimensions (70×48×98 mm) allow installation in tight enclosures where space is limited
• Sealed construction means no venting is required in the installation enclosure
• At 0.7 kg, the battery is lightweight enough for single-handed installation