Magna Power 12-Volt 300-Amp CCA Mower Battery

Name: Magna Power 12-Volt 300-Amp CCA Mower Battery
Brand: Magna Power
SKU: 50119789
Rating: 4.4 (1152 reviews)

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4.4

1152

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What is the warranty period?How many cold cranking amps?Will this fit garden tractors?What tools are needed for installation?Can I use this in RVs?

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For the toughest, outdoor use that requires batteries to deliver plenty of cranking amps to power tractors and recreational vehicles across the roughest terrain. The flush cover group U1 is calcium maintenance-free, eliminating the need to add water and the danger of harmful acid spills and lost vent caps. These flush cover batteries deliver more power-per-pound and longer storage life season after season. Special envelope separators protect all sides of the plates, preventing internal shorting and providing superior cranking capacity. These batteries have the power to perform in winter's bitter cold and summer's scorching heat and are made in the U.S.A.

Reliable cranking power for most garden tractor needs
Maintenance-free, calcium construction for longer life
Flush cover OE design provides easy and safe installation
300 cold cranking amps (Ca) at 0°
Recommended minimum cc for most engines up to 38 HP (in temperatures above 32)
365 cranking amps (Ca) at 32°
Left-hand positive terminal
For use in lawn and garden and in recreational vehicles

Dimensions
Height (Inches)	7.25	Width (Inches)	5.125
Length (Inches)	7.75	Battery Amp Hours	0
Weight (lbs.)	17

Features
Cold Crank Amps (0 degrees F) (Amps)	300	Reference Crank Amps-32 degrees F (Amps)	365
Maintenance-Free	Yes	Voltage (Volts)	12

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	6-month

General
Application	Mower	Terminals	Left

Miscellaneous
UNSPSC	26111700

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Review

4.4 out of 5

1152 Reviews

83% Recommend this product

Ratings may include incentivized customer reviews.

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+ 6

What Customers Are Saying

Customers overwhelmingly praise the battery's powerful cranking ability and instant start-up performance, with many reporting their mowers now start reliably after years of sluggish performance. Reviewers consistently highlight the exact fit for riding mowers, easy installation, and competitive pricing as major advantages. However, some customers report premature failures within months or a single season, with frustration over warranty claim denials. Despite these durability concerns, most customers consider the upfront value and reliable starting power worthwhile and would recommend it.

Customer review summary generated by AI, including incentivized reviews.

1152 Customer Reviews

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Dead on arrival

Would Not Recommend

Bought this battery off the shelf and took it home and installed it in my mower and it just clicked. Absolutely no voltage to turn over the mower. Had to put it on a trickle charger to get it up on voltage to start the mower. Week later dead again? Returning this boat anchor and getting my money refunded. Don’t by these junk batteries period.

Disappointed 3275August 29, 2026

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How good are these actually

Would Not Recommend

Cranking power is good. Questions still remain about long term reliability.I have purchased 3 or 4 of these over the life of my mower and after like 2 or 3 seasons they always fail.Fully maintained during off season.

Skeptic MikeAugust 28, 2026
Verified Purchaser

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Worked for 3 months

Would Not Recommend

Died after three months. Just outside the return window. I put it on a battery tender between use as well.

MikeAugust 21, 2026

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Great purchase

Would Recommend

Working great for my needs

BumpAugust 19, 2026

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battery

Would Not Recommend

bad after 5 months and I cant afford this

jenAugust 15, 2026

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TCA25015 John Deere battery replacement

Would Recommend

Worked absolutely perfect for replacing my John Deere battery. My old battery was showing enough voltage when tested but my machine wouldn’t start or make any noise/lights and the moment I attached the new battery it started right up! I was so relieved it was such a simple fix. Just 2 bolts and nuts to be removed and reattached and it’s all set! Hope it helps you too!

JojoAugust 12, 2026

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COMPARE PRODUCTS

		Name	Current Item Magna Power12-Volt 300-Amp CCA Mower Battery
		Ratings	1152
		Application	Mower
		Voltage (Volts)	12
		Weight (lbs.)	17
Mighty Max Battery12-Volt 320-Amp CCA Mower Battery	Deka12-Volt 350-Amp CCA Mower Battery	Magna Power12-Volt 210-Amp CCA Mower Battery	Magna Power12-Volt 135-Amp CCA Mower Battery	Deka12-Volt 540-Amp CCA Farm equipment Battery	Ariens12-Volt 190-Amp CCA Mower Battery	Deka12-Volt 550-Amp CCA Marine Battery	Deka12-Volt 450-Amp CCA Farm equipment Battery	Deka12-Volt 360-Amp CCA Farm equipment Battery
19	67	126	121	55	46	33	42	8
Mower	Mower	Mower	Mower	Farm equipment	Mower	Marine	Farm equipment	Farm equipment
12	12	12	12	12	12	12	12	12
14	19	8.17	7.16	30	8.22	42.5	28.5	29