MK Battery - 12V 50 AH Sealed Gel (2) Batteries
$549.97
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MK Battery - 12V 50 AH Sealed Gel (2) Batteries
Manuals, Literature
Power Wheelchair and Scooter Battery Chart
Power Wheelchair and Scooter Battery ChartProduct Code: M22NF-SLD-G
$549.97
Description
The MK Battery 12V 50Ah Sealed Gel Battery (M22NF SLD G) is a deep-cycle Group 22NF replacement battery for full-size power wheelchairs and heavy-duty scooters, sold as a pair and made in the USA. Its gelled electrolyte can't spill or leak, it never needs water, and the maker rates it non-spillable by ICAO, IATA, and DOT. Each battery measures about 9.38" × 5.50" × 9.25" and weighs about 37 lbs. 12V · 50Ah · sealed gel, deep cycle · Group 22NF · non-spillable (ICAO, IATA, DOT) · made in USA · sold as a pair · about 37 lbs each · 13-month warranty.
Not sure this battery fits your scooter or chair? Call 1-866-218-0902 — Mon–Fri 9AM–5PM · Sat 9AM–3PM EST
What Defines This Battery
Deep-Cycle Gel
A gelled electrolyte built for repeated deep discharges, rated for up to 500 cycles in lab testing.
Non-Spillable
Fully sealed and safe in any position. MK rates it non-spillable by ICAO, IATA, and DOT.
Maintenance-Free
Never add water. No memory effect, and you don't need to run it down before recharging.
Made in the USA
Built in the USA and used by leading scooter and wheelchair makers. Sold as a matched pair.
Gel or AGM? Gel batteries handle deep, daily discharges especially well and are a common original-equipment choice in power chairs. Use the charging profile your chair's charger recommends, and call us if you're switching types: 1-866-218-0902.
Specifications
| Brand | MK Battery |
| Model | M22NF SLD G |
| Voltage | 12V (each) |
| Capacity | 50Ah (sold rating) · 50.9Ah at 20-hour rate · 58.2Ah at 100-hour rate |
| Type | Sealed valve-regulated gel · deep cycle · maintenance-free |
| Group Size | 22NF |
| Terminals | G-style (T881) |
| Dimensions (each) | About 9.38" L × 5.50" W × 9.25" H |
| Weight (each) | About 37 lbs |
| Non-Spillable Rating | ICAO, IATA, and DOT |
| Charging Voltage | 13.8–14.1V (cycle) · 13.5–13.8V (float), at 68°F |
| Quantity | Pair (2 batteries) |
| Made In | USA |
| Warranty | 13 months |
Signs It's Time to Replace Your Batteries
Shorter Rides
If your scooter or chair no longer goes as far on a full charge, your batteries are likely wearing out.
Slower on Hills
Weak batteries often show up first on ramps and inclines, where the chair slows or struggles.
Two Years or More
Most mobility batteries last one to two years with regular use. If yours are older, plan for a new pair.
Frequently Asked Questions
Will this fit my scooter or power chair?
It replaces Group 22NF batteries in the 50–55Ah range, common in full-size power chairs and heavy-duty scooters. Check your current batteries' label or owner's manual, or call us with your make and model: 1-866-218-0902.
Do I need to replace both batteries?
Yes. In a 24V system, an old and a new battery will wear unevenly. That's why these are sold as a pair.
Can I fly with these batteries?
The maker rates them non-spillable by ICAO, IATA, and DOT, which many airlines accept for mobility devices. Rules vary, so confirm with your carrier before you travel.
How do I make my batteries last?
Charge after every use, never store them discharged, and keep them out of extreme heat and cold.
What does the warranty cover?
MK Battery covers these batteries for 13 months. Call us with warranty questions: 1-866-218-0902.
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Need Help Choosing a Battery?
Tell us your scooter or power chair model and we'll confirm the right battery in one call.
📞 1-866-218-0902 · Mon–Fri 9AM–5PM · Sat 9AM–3PM EST
*Battery runtime and cycle life vary with rider weight, terrain, temperature, charging habits, and battery age. Confirm size, voltage, and terminal style before ordering.
Technical Specs
Wheelchair Measuring Guide