MK Battery

M22NF 12V 51AH GEL Battery ( Sold in pairs )

Mobility Batteries
(Model No. M22NF SLD G)

Starting at: $699.00 USD

Key Features

    • NF22-size gel specification: The M22NF SLD G provides a 12V, 51Ah rating over 20 hours, identifying a gel replacement for devices that specify this model rather than an AGM alternative.
    • Reduced routine battery care: Its sealed gel construction holds the electrolyte in place and requires no periodic water top-ups, simplifying maintenance when used with the correct gel charging profile.
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MK Battery

Mobility Batteries
(Model No. M22NF SLD G)

Starting at: $699.00 USD
$699.00
Shipping calculated at checkout.
Lead Time: This product ships in 2 Business Weeks

Description
Specifications
Information

MK Battery M22NF SLD G 12V 51Ah Gel Batteries, Pair

This listing supplies two MK Battery M22NF SLD G batteries. Each battery is rated at 12 volts and 51 amp-hours and uses sealed gel chemistry. Gel is not interchangeable with the M22NF AGM version simply because the models share a group size. The quantity is a pair; the assembled equipment's voltage and amp-hour capacity depend on how the device wires its batteries.

Verify Model and Physical Fit

Check that the device manufacturer specifies the M22NF SLD G gel model and a two-battery set. Compare the case dimensions, tray, terminal type and orientation, cable reach and hold-downs with the existing installation. Similar voltage or group size does not confirm a match if the device calls for a different chemistry, terminal layout or battery capacity.

Charging and Battery Care

Use a charger and charging profile approved for sealed gel batteries and for the specific equipment. Do not substitute the AGM M22NF or another battery type without the device manufacturer's approval. Follow MK's instructions for charging, storage and handling, and connect both batteries in the equipment's specified series or parallel arrangement. Sealed construction does not eliminate the need for correct charging and installation.

Pair Quantity and Service

The product is sold as two batteries for equipment that requires a pair. Do not treat the label ratings as the assembled system's capacity without checking the wiring diagram. Optional installation service is labor dispatch and battery installation only; it is non-refundable and may include a travel charge based on technician distance. Confirm service availability before adding it to the order.

Before Ordering

Verify the exact M22NF SLD G model, two-battery quantity, per-unit 12V/51Ah rating, tray dimensions, terminal layout, charger profile and device wiring. Choose this gel model only when the equipment's specification calls for it.

GEL Battery

  • Has a 70 minute reserve capacity
  • Capacity at 5hr RATE 43.2AH
  • Capacity at 20hr RATE 51AH
  • Capacity at 100hr RATE 58AH

Dimensions:

  • Weight: 37 lbs each
  • Length: 8.99'
  • Width: 5.47'
  • Height: 9.24'

GEL vs. AGM Sealed Batteries

AGM (absorbed glass mat) is a special design glass mat designed to wick the battery electrolyte between the battery plates. AGM batteries contain only enough liquid to keep the mat wet with the electrolyte and if the battery is broken no free liquid is available to leak out.

Gel Cell batteries contain a silica type gel that the battery electrolyte is suspended in, this thick paste like material allows electrons to flow between plates but will not leak from the battery if the case is broken.

More often than not an AGM Batteries are mistakenly identified as a Gel Cell Batteries. Both batteries have similar traits; such as being non spillable, deep cycle, may be mounted in any position, low self discharge, safe for use in limited ventilation areas, and may be transported via Air or Ground safely without special handling.

AGM Batteries outsell Gel Cell by at least a 100 to 1. AGM is preferred when a high burst of amps may be required. In most cases recharge can be accomplished by using a good quality standard battery charger or engine alternator. The life expectancy; measured as cycle life or years remains excellent in most AGM batteries if the batteries are not discharged more than 60% between recharge.

Gel Cell Batteries are typically a bit more costly and do not offer the same power capacity as do the same physical size AGM battery. The Gel Cell excels in slow discharge rates and slightly higher ambient operating temperatures. One big issue with Gel Batteries that must be addressing is the CHARGE PROFILE. Gel Cell Batteries must be recharged correctly or the battery will suffer premature failure. The battery charger being used to recharge the battery(s) must be designed or adjustable for Gel Cell Batteries. If you are using an alternator to recharge a true Gel Cell a special regulator must be installed.

If you are unsure which battery or charger is best for your application, please call or email our tech people for help making the correct selection.

Ownership Information

No product documentation available at this time.

Warranty Information

12 Month Full Replacement Warranty with Receipt

Shipping / Returns Information

This item(s) is delivered via common carrier ( UPS )

The following conditions apply:
  • This item is non-returnable
  • Items canceled after the product has already shipped will be considered as an attempt to return.
  • Delivery and service fees are not refundable.
  • If the product is faulty upon arrival you must notify us within 3 business days of delivery for replacement.

If you have questions about this item please call a Top Mobility Customer Service Expert at 1-888-364-3813.