MK Battery 12V 51 Ah Heavy Duty Sealed Gel Battery | Premium Maintenance-Free Deep Cycle Power

MK Battery 12-Volt 51 Ah Heavy Duty Sealed VRLA Genuine Gel Deep-Cycle Battery

The MK Battery M22NF SLD G is an institutional-grade 12V 51 Ah valve-regulated sealed gel battery engineered explicitly for continuous, deep-cycle demands within medical mobility infrastructure, heavy-duty power wheelchairs, and critical institutional fleet transport. Manufactured in the USA by East Penn Manufacturing, this rugged Group 22NF battery utilizes a specialized thixotropic gelled electrolyte configuration rather than conventional liquid acid or absorbent glass mat layouts. The result is an ultra-dependable power cell that can withstand the rigorous daily runtime demands of clinical facilities, commercial healthcare complexes, and public-use mobility fleets.

Unplanned machinery downtime, premature capacity degradation, and dangerous fluid leakage from low-tier alternative batteries represent major physical and financial liabilities for facility managers and procurement officers. The M22NF SLD G eliminates these vulnerabilities with a completely maintenance-free, sealed VRLA architecture that requires zero periodic watering or electrolyte adjustments throughout its active service life. Featuring advanced Individual Plate Formation (IPF) technology, each plate is uniformly formed under strict computerized controls to guarantee excellent cell consistency, maximize raw energy capacity, and provide up to 2-3 times the cyclic durability of standard AGM alternatives.

Product Video

Key Benefits:

• Immobilized Gel Electrolyte: Employs a premium, thixotropic sulfuric acid gel mixture that prevents internal fluid stratification, cell dehydration, and terminal leaks, even if the casing is damaged.
• Individual Plate Formation (IPF): Advanced automated plate production ensures absolute consistency in electrical output across all internal cells, yielding maximum runtime and uniform power.
• 100% Maintenance-Free: Eliminates localized facility labor overhead by removing the need for periodic water replenishment, acid density inspections, or equalization charging.
• Exceptional Deep Cycle Performance: Capable of sustaining up to 1,000 discharge cycles at 50% Depth of Discharge (DOD), significantly outlasting competitive batteries in multi-shift configurations.
• Certified Non-Spillable Status: Fully compliant with DOT, FAA, IATA, and ICAO requirements for air and public transportation, ensuring unrestricted global deployment logistics.
• Robust Thermal Performance: Features an extended operating temperature window spanning from -76°F up to 140°F, ensuring stable voltage profiles under severe ambient conditions.
• Vibration-Resistant Hardware: Outfitted with forged terminals and bushings to guarantee continuous, arcing-free electrical conductivity across uneven terrain.

Specifications:

• BCI Group Class: 22NF
• Battery Chemistry: Valve-Regulated Lead-Acid (VRLA) Genuine Gel
• Nominal Voltage: 12 V
• Capacity at C/20 Rate (Standard): 51 Ah
• Capacity at C/100 Rate: 58 Ah
• Capacity at C/5 Rate: 43.2 Ah
• Plate Alloy Composition: Lead-Calcium Grid
• Terminal Style: G Terminal (L-Shaped Post / T881)
• Enclosure Material: Polypropylene
• Cycle Charging Voltage Range (@ 77°F / 25°C): 13.8V - 14.6V
• Float Charging Voltage Range (@ 77°F / 25°C): 13.4V - 13.6V
• Self-Discharge Rate: Less than 2% per month at ambient temperature
• Safety Pressure Venting: Low-pressure self-sealing mechanism
• Operating Temperature Thresholds: -76°F to 140°F (-60°C to 60°C)
• Physical Dimensions (L x W x H): 8.99" x 5.47" x 9.26" (228mm x 139mm x 235mm)
• Unit Net Weight: 37.5 lbs. (17 kg)

Extended Product Information:

• Battery Specifications PDF