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MK

MK 8GU1 Gel Battery, 12 V, 31.6 Ah, No Handle

Quote only

Priced by quote: your written quote confirms current pricing, options and availability.

The MK 8GU1, also called MU-1 SLD G, is a 12 V valve-regulated gel battery for a chair or scooter that already uses this part. It is the no-handle case, rated 31.6 Ah at the 20-hour rate.

  • Size: 7.71 in long, 5.18 in wide, and 7.22 in over the terminal (196 mm, 132 mm, and 183 mm)
Part
8GU1, alternate model MU-1 SLD G
Capacity
31.6 Ah at the 20-hour rate
Weight
23.5 lb11 kg
Terminal
Y (T873), a small L with a 5/​16 in hole, and no handle

What is included?

One MK 8GU1 gel battery. The sheet does not list a charger, cables, a handle, or a bolt. Match the terminal to the cables already on the chair.

  • Delivery and setup Across Toronto and the GTA: we set it up, show you how it works and service it at home or in our shop. Call (905) 798-1853
  • Safe checkout VISA Visa or Mastercard online, or pay in store when you visit us.
SKU
8GU1
Brand
MK
Category
Batteries
Barcode 8GU1 8GU1

Description

This is MK gel part 8GU1, alternate model MU-1 SLD G, and it has no lifting handle.

Who should choose this gel battery?

  • Choose it when the battery coming out is marked 8GU1 or MU-1 SLD G.
  • Choose the 8GU1H when the tray needs a handle. That part is 8.41 in (214 mm) long.
  • Choose another case when the old battery is an 8G22NF. That gel part is larger and uses terminal G.

Will the 8GU1 fit the tray?

  • Length 7.71 in (196 mm). Width 5.18 in (132 mm). Height 7.22 in (183 mm), including the terminal.
  • Weight 23.5 lb (11 kg).
  • Terminal Y (T873) is a small L with a 5/16 in hole. MK's offset post is terminal G, not this one.

How should the 8GU1 be charged?

  • At 77 F (25 C), cycle charge is 13.8 to 14.6 V and float is 13.4 to 13.6 V, on a constant-potential charger.
  • Do not charge it in a sealed container. The data sheet lists operation from -76 F to 140 F (-60 C to 60 C).
  • MK rates it non-spillable by ICAO, IATA and DOT. The airline still decides.
  • These sheets do not name a chair. Match the part number on the old battery.

How does the 8GU1 compare with other MK batteries?

Our technicians can fit and test this battery at home or in the shop. Start from battery replacement.

Frequently asked questions

Does terminal Y include a bolt?

The gel brochure describes Y as a small L terminal with a 5/16 in hole. It does not say a bolt is included.

Is the 8GU1 a 35 amp battery?

No. MK prints 31.6 Ah at 20 hours, 26.8 Ah at 5 hours, and 36 Ah at 100 hours. It does not print 35.

Can I charge the 8GU1 in a closed box?

No. MK says not to charge this gel battery in a sealed container.

Does MK call the 8GU1 a deep cycle battery?

The gel brochure marks this row as standard cycle life. It does not print the words deep cycle.

Funding may help: see who may help pay. Mobility Specialties is an ADP registered vendor. Never put the old battery in the garbage.

Specifications

Product weight
23.5 lb (11 kg)
Installation
Our technicians can fit and test it at your home or in our shop
Disposal
Lead acid: never in household garbage. Take it to a Toronto drop-off depot or a Peel Community Recycling Centre
Battery capacity
31.6 Ah at the 20-hour rate
Battery voltage
12 V
Battery group
MU-1 (MK alternate model MU-1 SLD G)
Battery terminal
Y (T873): small L terminal with a 5/16 in hole
Sold as
One battery
Deep cycle
No. MK marks this row standard cycle life
Air travel
Rated non-spillable by ICAO, IATA and DOT; the airline must approve it
Battery length
7.71 in (196 mm); the handle part 8GU1H is 8.41 in (214 mm)
Battery width
5.18 in (132 mm)
Battery height
7.22 in (183 mm) over the terminal
Battery charger
Cycle 13.8 to 14.6 V and float 13.4 to 13.6 V at 77 F, on a constant-potential 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

Our technicians service what we sell, at home or in our shop.

Try before you buy

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

Warranty

Mobility store warranty terms

These are Mobility's purchase and service policy terms, separate from any manufacturer warranty coverage.

1 year on parts.

Read the warranty and service policy for the full terms.

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.

Not sure where to start?

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