Best lawn mower battery

[Jayrh]

Hello all, I have bought a bunch of Walmart mower batteries. They outlast the 90 warranty and that's about all. I would like a battery that will last a year or two. Or should I mount a car battery between my feet! All reply's much appreciated..........Jay

 

[Scrubcadet10]

I've had good luck with Batteries from Tractor supply, can't remember the name brand, also the L&G Batteries from o'Reilly Auto Parts.

 

[wrldtvlr]

AGM batteries are more expensive that old school lead acid batteries, but last longer. You might try one of those and see if it helps.

 

[Rivets]

Been using Interstate batteries for the last 15 years at the shop and in all my vehicles. No problems or customer complaints.

 

[7394]

I'm just past the 6 year point on my Z, & it still has the OE battery. But I do hook it to a battery MINDer® here & there.

And not all batteries are created equal. Some that are under the seat are about 1 inch lower than any off the shelf battery.. Just saying.

Mine has one like that. 1 inch taller would fit, but when the seat bounces, it might cause issues..

 

[tom3]

I've been using the Tractor Supply batteries for several years, get really good long term service. I take the battery out in January and give it a recharge. Usually buy the upper level battery, 300 amp I'm thinking.

 

[qmark]

Could you have some other problem, some sort of a discharge. Even Walmart batteries should last a way more than 90 days.
Check your voltage while running. The alternator should be putting out about 14 volts.

 

[Scrubcadet10]

Depends on the mower, most regulate it to around 13.2 volts.

 

[qmark]

13.2 seems low, but I don't know what most lawn mowers do. That might not be enough to maintain a battery. My grasshopper is 14.2 like most other engines. Low charging voltage will ruin a battery over time.

 

[Mower King]

13.2 seems low, but I don't know what most lawn mowers do. That might not be enough to maintain a battery. My grasshopper is 14.2 like most other engines. Low charging voltage will ruin a battery over time.

I agree with this quote!

We sell Interstate Batteries, the SP-40 is the one I always grab and install in all the mowers I work on. They are 435 CA and seem to last for years if charged during the winter season.