Benefits of an Advanced Sealed Gel or AGM Battery
Battery technology has changed tremendously in just the past few years. In fact, size-for-size, MK's advanced sealed Gel and AGM batteries deliver more power and more consistent performance than other types and brands of batteries used for mobility. MK's performance-proven sealed Gel and AGM designs:

Can last longer than other batteries due to high quality manufacturing standards.
Are A-67 DOT/FAA-IATA Standard approved for airline and public transportation.
Do not need to be fully discharged before recharging.
Do not develop a "memory" that limits their recharging.
Will not automatically discharge if put on concrete.

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Model  M22NF SLD G
Nominal Voltage (V) 12V
Capacity at C/100 57Ah
Capacity at C/20 50Ah
Weight 38 Lbs. (17.1 kg)
Plate Alloy Lead Calcium
Posts Forged terminals & bushings
Container/Cover Polypropylene
Operating Temperature Range -76°F (-60°C) – 140°F (60°C)
   
Charge Voltage @ 68°F (20°C)  
Cycle 2.30 - 2.35 VPC
Float 2.25 - 2.30 VPC
Vent Self-sealing (2 PSI operation)
Electrolyte Sulfuric acid thixotropic gel
Resistance 4.0 Milliohms (full charge)