MK Battery

MK Battery 8G40 · Electric wheelchair battery 12V 40Ah

Reference: BOL-MK-8G40

The MK Battery 8G40 is an electric wheelchair battery with 12 V and 40 Ah, measuring 197.1 × 168.1 × 174.8 mm.

MK Battery 8G40 · Electric wheelchair battery 12V 40Ah – main view
Voltage
12V
Capacity
40Ah
Technology
GEL
Dimensions (L × W × H)
197.1 × 168.1 × 174.8 mm
Solve it now by chat Our assistant replies instantly about batteries, shipping and orders, and opens the request you need.
I prefer to fill in the form
Free quote, no strings attached

Ask for a price for your MK Battery 8G40 · Electric wheelchair battery 12V 40Ah

  • We reply within 4 working hours
  • Fixed price before you pay
Add a photo (optional)
Photo of your current battery or the vehicle papers · up to 3 files of 8 MB · image or PDF
Share
Secure payment
PayPal, bank transfer or cash on delivery, always over an encrypted connection. Shipping with no surprises
For Spain, Portugal, France, Germany, Italy, Belgium and the Netherlands you see the exact cost before paying. For the rest of Europe we send you a shipping quote, with no obligation. 14 days to return your order
If it does not fit, you have 14 days from delivery to return it unused.

Where the MK Battery 8G40 fits

The MK Battery 8G40 is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The 8G40 is fitted in pairs: two 12 V batteries in series give the chair's 24 V.

The 8G40 belongs to the MK Battery MK GEL range. More MK Battery batteries

Equivalents and alternatives to the MK Battery 8G40

Other gel batteries with the dimensions and polarity of the 8G40: with gel it is best to stay with gel, because the charging profile is different.

ModelTechnologyCapacityDimensions (mm)
Deka 8G40GEL40 Ah197.1 × 168.1 × 174.8
Long LG40-12GEL40 Ah199 × 166 × 171
Long LG40-12NGEL40 Ah199 × 166 × 171
MK Battery M40-12 SLD GGEL40 Ah197.1 × 168.1 × 174.8

MK Battery 8G40 vs 8GU1 and MU-1 SLD G: differences

Torn between the 8G40 and another similar MK Battery? This is what changes:

ModelCapacityDimensions (mm)Weight
MK Battery 8G40 (this one)40 Ah197.1 × 168.1 × 174.814.29 kg
MK Battery 8GU131.6 Ah195.8 × 131.6 × 183.410.66 kg
MK Battery MU-1 SLD G31.6 Ah195.8 × 131.6 × 183.410.66 kg
  • MK Battery 8GU1: 8.40 Ah less, a different case (195.8 × 131.6 × 183.4 mm).
  • MK Battery MU-1 SLD G: 8.40 Ah less, a different case (195.8 × 131.6 × 183.4 mm).

What it means that the 8G40 is GEL

The 8G40 is a gel battery: the electrolyte is immobilised in silica gel. The 8G40 handles repeated deep discharges well, its strong point compared with an AGM.

Check this before ordering the MK Battery 8G40

  • The 8G40 needs 197.1 × 168.1 × 174.8 mm of space: measure it with the hold-down clamp in place.
  • With 40 Ah, the 8G40 replaces an original battery of that capacity or slightly less.

MK Battery 8G40 codes and part numbers

Look for any of these 8G40 codes on your current battery or in the manufacturer's catalogue:

Commercial reference8G40
Not to be confused withMK Battery 8G4D (183 Ah)

Frequently asked questions about the MK Battery 8G40

MK Battery 8G40 or 8GU1?

Compared with the 8G40, the MK Battery 8GU1 has 8.40 Ah less. With 40 Ah, the 8G40 runs longer between charges than the 8GU1 (31.6 Ah). Mind the space: the 8GU1 measures 195.8 × 131.6 × 183.4 mm.

How much does the MK Battery 8G40 weigh?

The 8G40 weighs 14.29 kg. For reference, the MK Battery 8GU1 (31.6 Ah) weighs 10.66 kg.

Which battery is equivalent to the MK Battery 8G40?

For the 8G40, other gel batteries with its size and polarity: Deka 8G40, Long LG40-12 and Long LG40-12N.

Which charger does the MK Battery 8G40 need?

A charger with a GEL mode not exceeding 14.1-14.4 V. Charging it with a conventional lead-acid profile damages it through overcharging.

Other options if you are unsure about the 8G40

Reviews

This product has no reviews yet. If you own it, tell us how it has gone: it will help whoever is looking at it now.

Back to top