MK Battery MU-1 SLD M-33-FT 12V 33Ah Sealed VRLA Battery

MK Battery 12-Volt 33Ah Sealed Valve-Regulated Lead-Acid (VRLA) Battery for Medical Mobility and Institutional Fleets

The MK Battery MU-1 SLD M-33-FT is an institutional-grade, premium 12V 33Ah sealed valve-regulated lead-acid (VRLA) battery engineered to deliver uncompromised deep-cycle power for medical mobility and commercial fleet operations. Specifically designed to fulfill the rigid international safety and performance criteria of the ISO 7176-25 standard for motorized wheelchairs, this non-spillable battery provides optimal safety and sustained energy discharge profiles. It is a high-reliability power choice for healthcare facilities, equipment distributors, and biomedical engineers managing heavy-use wheelchair assets and small industrial back-up configurations.

Operational vulnerabilities in clinical networks often trace back to low-quality alternative battery brands that suffer from high internal resistance, rapid outgassing, or premature cell failures. The MU-1 SLD M-33-FT minimizes these critical failure modes by featuring a robust ABS plastic outer casing rated at UL94 HB flame resistance and incorporating low-resistance internal plates (approx. 6.5 mΩ) that maintain safe operating thresholds under intense deep discharge cycles. Possessing a massive maximum discharge current threshold of 495 Amps for up to 5 seconds, this rugged battery provides dependable peak-power delivery when navigating steep ramps or uneven terrain.

Key Benefits:

• ISO 7176-25 Mobility Certification: Officially engineered and validated under international ISO benchmarks ensuring safe, reliable, and standardized performance inside power wheelchair configurations.
• High Peak Current Output: Safely supports a massive 495A maximum surge discharge current for up to 5 seconds to easily handle brief high-torque operational demands.
• Excellent Storage Shelf-Life: Boasts superior charge retention properties, sustaining up to 97% capacity after 1 month and up to 85% after 6 months in normal storage environments.
• Sturdy Flame-Retardant ABS Case: Built inside a durable ABS plastic housing matching UL94 HB safety metrics, shielding internal plates from impact and environmental stresses.
• Ultra-Low Internal Resistance: Features a minimal 6.5 mΩ internal resistance level to optimize active electrical conduction efficiency and lower hazardous heat generation.
• Vibration-Resistant M5 Terminals: Equipped with precise M5 bolt terminal hardware paths to provide robust, long-term electrical contact points across uneven transport surfaces.

Specifications:

• Manufacturer: MK Battery
• Battery Chemistry: Sealed Valve-Regulated Lead-Acid (VRLA)
• Nominal Voltage: 12V
• Nominal Capacity (20-Hour Rate): 33Ah
• Nominal Capacity (10-Hour Rate): 31.35Ah
• Nominal Capacity (5-Hour Rate): 28.05Ah
• Internal Resistance (@ 1KHz): Approx. 6.5 mΩ
• Maximum Discharge Current (5 Seconds): 495A
• Enclosure Housing Material: ABS UL94 HB
• Terminal Interface Style: M5 Bolt / F6
• Recommended Hardware Torque: 4 N-m (41 kgf-cm)
• Maximum Allowed Hardware Torque: 6 N-m (61 kgf-cm)
• Cycle Use Charging Voltages (@ 25°C): 14.4V to 15.0V
• Standby Use Float Voltages (@ 25°C): 13.50V to 13.80V
• Maximum Input Charging Current Limit: 9.9A
• Operating Temperature Threshold (Discharge): 5°F to 122°F (-15°C to 50°C)
• Physical Form Dimensions (L x W x H): 197mm x 131mm x 159mm / 168mm including terminals (7.76" x 5.16" x 6.26" / 6.61")
• Unit Net Weight: Approx. 22.2 lbs. (10.1 kg)