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MK

MK 8G22NF Deep Cycle Sealed GEL Battery

The MK 8G22NF, also marked M22NF SLD G, is one 12 V sealed gel battery. MK rates it 51 Ah at the 20-hour rate and calls the terminal a G (T881). The case is 8.99 x 5.47 in, and 9.26 in high including the terminal. It weighs 37.5 lbs (17 kg). It is gel, not AGM. Sold one at a time. A 24 V chair that specifies gel in Group 22NF needs two, replaced together. An AGM 22NF does not replace it.

Battery voltage
12 V
Battery capacity
51 Ah at the 20-hour rate
Battery group
Group 22NF
Battery terminal
GT881
Product weight
37.5 lbs17 kg
Sold as
One battery; most chairs use two

What is included?

One MK 8G22NF with a G terminal. No charger, cables or second battery. To have it fitted and tested, use our battery replacement form.

$ 408.33 $ 408.33

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SKU
8G22NF
Brand
MK
Barcode 8G22NF 8G22NF

Description

The MK 8G22NF, also marked M22NF SLD G, is one 12 V sealed gel battery in Group 22NF. It weighs 37.5 lbs (17 kg).

Which power chairs and scooters does this battery fit?

Order it when the label you remove says gel, 12 V, Group 22NF, and the terminal is a G post. That table is not a list of chair models. The sheet does not call the battery deep cycle, even though older shop titles do.

The MK 8A22NF is the AGM Group 22NF, 55 Ah at 20 h, and it does not replace this gel. Do not put an AGM in a chair that requires gel.

What must match the old battery?

  • Read maker, part number, 12 V, amp-hours, and the word gel. AGM is the wrong chemistry.
  • Look at the terminals. This part is a G (T881). An M6 insert or a flag is a different battery.
  • Measure the case, terminals included. MK's sheet says 8.99 in long, 5.47 in wide, and 9.26 in high including the terminal.

How many and how should they be charged?

Buy two 8G22NF batteries when both boxes are this gel part. Do not mix gel with AGM, and do not leave an old battery beside a new one.

Frequently asked questions

Can I use the AGM 8A22NF instead?

Only if the chair maker allows AGM and the battery you remove is AGM. Do not mix one gel and one AGM.

Will it fit a Fortress 1700?

Sunrise requires gel, which this is. The published box maximum is 9.25 in high, and this battery is 9.26 in including the terminal. Measure the old battery, terminal included, before you order.

How is this different from the Interstate GEL0055?

Both are gel Group 22NF batteries. MK rates the 8G22NF at 51 Ah at 20 h with a G terminal.

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Specifications

Product weight
37.5 lbs (17 kg)
Installation
Our technicians can fit and test it at your home or in our shop
Disposal
Lead acid over 5 kg: never in household garbage. Take it to a Toronto drop-off depot or a Peel Community Recycling Centre
Battery capacity
51 Ah at the 20-hour rate
Battery voltage
12 V
Battery group
Group 22NF
Battery terminal
G (T881)
Sold as
One battery; most scooters and power chairs use two
Deep cycle
No, a sealed gel battery, not labelled deep cycle
Air travel
Rated non-spillable by ICAO, IATA and DOT; the airline must approve it
Battery length
8.99 in (228 mm)
Battery width
5.47 in (139 mm)
Battery height
9.26 in (235 mm) including the terminal
Compatible with
Gel Group 22NF, G terminal. Measure before a Fortress 1700 (9.26 in tall). Jazzy EVO 614 and Q6 Edge if the label is gel.
Battery charger
Charges on the scooter or power chair's own charger
Product type
Power wheelchair and scooter battery
Chemistry
Sealed lead acid, gel electrolyte, valve regulated

Figures from the manufacturer. Options and seat sizes can change them; we confirm yours before ordering.

Documents

Delivery and service

Delivery and setup

We deliver and set up equipment across Toronto and the GTA, and show you how everything works. Custom and special-order products can take longer; we confirm timing with you before delivery.

Service and repairs

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Visit a showroom in Etobicoke or Brampton to try products first, or book a free home assessment.

Questions about this product?

Talk to our team, try it in a showroom, or book a free home assessment. We help with sizing and funding.

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