OPTIMA® Batteries High Performance D31T YELLOWTOP® Sealed AGM Battery

Excellent battery and lasts 5 to 7 years.

Amazon had the best price by far and I didn't have to send them my old cores.

Came and installed as advertised! High quality, still satisfied with purchase 8 months later.

This is the second Optima Yellow Top Dual purpose battery that I have purchased and I am very please with it's performance. The Optima yellow top I had before this one lasted 6 years with much use during camping. Six years is a very long time of discharging and recharges, for any RV battery. My other batteries were the typical deep cycle acid batteries which only lasted about a year and a half. This battery holds a charge very well. I can camp for 4 to 5 days without recharging. I highly recommend this battery because you get more for your money.

So far so good.

My husband loves this product, we have two of these batteries in his race car, two in the race care trailer, and two in our motor home. When he had difficulty using the wench in the trailer to bring the car in and out of the trailer, he believed the batteries needed to be replaced, so I ordered this one. After placing the order, my husband discovered a loose wire, when that was reattached the wench began working as it should. I tried to cancel the order, but was unable to do so. When the battery arrived, I followed the process in Amazon, emailing the company. Three emails were sent, I did never received a response. I called Optima on 11/27 and was told by customer service I had to call Amazon to return the battery. While trying to locate the number to call using Rufus, I ended up in a chat with a hazardous materials return associate. He said the battery is not returnable. Optima says it is, but I have to go through Amazon, who says it is not returnable. I was stuck with a $400 battery I did not need. If the battery is not returnable that should be indicated before in the listing, so this is known before an order is placed.

I was hesitant to spend the extra money in hopes the cost would ofset the fact that I was burning through 4 batteries in my Semi every year and Optima claims 3 years life. Well, its been 4 years and I like them so much I bought a second batttery box and have 6 total batteries now with this current purchace of 3. I regularly drain them down to 11.1 volts before starting the truck again. During my 10 hour break I use my Vue Cube Direct TV sattelite system, TV, Webasto bunk heater, webasto Engine block heater, refrigerator/freezer, interior lights, charge my phone and bluetooth headset, sometimes also using my Laptop and printer too. With all six at the end of a 10 hour break and full use of my gadgets the battery guage reads 11.9.........Not bad! No longer interested in Lithium-Ion and its inherent risks.

optima makes great batteries. however the description here is incorrect as is the primary picture. description says dual posts SAE and steel Posts not the case. this model is only a stud no sae post at all. i purchased 3 i got two different batteries. i got the 8051-160 and 2 of the 8050-160. the 8051 has sae posts only and the 8050 has studs only. i needed both studs and sae as the description says. had to return. the batteries i was replacing was from heavy marine use and were from 2008. one of them went bad so i was going to replace the whole bank of 3. never mix old optima batteries with new one's. hope this helps anyone looking to purchase these batteries. optima batteries last as you can see from the time i got out of them. the battery charger is very important when dealing with optima batteries. as long as it is a high end charger they will last. for those of you saying the batteries made in mexico do not last i got just over 8 years hard marine use and all were made in mexico