Rated 4.33 out of 5 based on 3 customer ratings
(3 customer reviews)

$109.99

12V 50AH SLA Replacement Battery for UB12500 45979 45977

Availability: In stock

SKU: ML50-126837 Category:
Delivering power when you need it, the Mighty Max ML50-12 12 Volt 50 AH uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.
The ML50-12 is an Absorbent Glass Mat (AGM) technology with a valve regulated design, that can be used in enclosed and indoor environments without leaking or maintenance, providing a superior performance for thousands of models.
Mighty Max SLA batteries are utilized in a wide variety of applications including; Consumer Electronics, Electric Vehicles, Engine Starters, Golf Carts, Hunting, Lawn and Garden Tools, Medical Mobility, Motorcycles, Power sports, Portable Tools, Solar, Toys and Hobby, Access Control Devices, Emergency Lighting, Security and more.
Specifications: 
Voltage: 12 Volt
Amperage: 50 AH
Chemistry: SLA, AGM
Battery Dimensions: 
7.76 in x 6.54 in x 6.91 in
Weight: 30.02 Lbs
Warranty
1 Year
Volts

12V

Amp Hour

50Ah

Chemistry

SLA / AGM

Terminal

Nut and Bolt

Quantity

1

Length

7.76

Width

6.54

Height

6.91

Weight

30.02 Lbs

Warranty

1 Year

3 reviews for 12V 50AH SLA Replacement Battery for UB12500 45979 45977

  1. Rated 3 out of 5

    Jim Baker

    I purchased this battery to be an auxiliary battery for a VW Vanagon. Based on the dimensions listed, it should have fit under the front driver seat. Unfortunately, those dimensions and the images didn’t see to indicate that the terminals are taller than the case of the battery. Since they stuck out above the case, they would not fit in the compartment where I intended to install it without some sort of modification. I am happy with the speed of delivery and it didn’t seem to have any issues other that the size wasn’t exactly correct.

  2. Rated 5 out of 5

    Web Customer

    The two 40amp batteries on my scooter wouldn’t charge any longer. These two 50amp replacements are the bomb!

  3. Rated 5 out of 5

    Edwin

    The battery was a replacement battery for a scooter and works better than the original battery. The order was painless and it arrived before the estimated date of arrival.

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Excellent
Mighty Max Battery
Based on 3470 reviews
Battery arrived in a good shape package strait to my door steps
Arrived just in time to power my generator here in the cold Maine winters. Excellent service!
Arrived quickly from WALMART.COM. Perfect size and proper placement in my generator. Installation was easy. Generator fired right up. Battery came fully charged.
New battery. Ready for cold weather!
So far these Might Max batteries are good but it’s only the first day and they were on charge for 12 hrs. I’ll have to come back and do an update at some point in time. Ordered them on Amazon and got them the next day. I was encouraged by Mighty Max to make this google review and post pictures to extend my warranty for 3 months but there is no way to post pictures 🤣🤣🤣 It’s been a few months and I was able to go back and edit, so here is a video I made, the rest of the photos I have deleted. Batteries are still going strong. Update 12-11-2025
They arrived within 2 days of ordering them packaging was really good I haven't put them in my MX350 yet I hit them with my multi meter fresh out of the box and got 12.4v on both batteries so that is good
Fonctionne bien et s’est bien adaptée pour le remplacement de l’ancienne.
Battery arrived in perfect condition and 100% charge.
Strong battery! It spins my 24 hp Kohler engine super fast!
Arrived fully charged..great price