Batteries High Performance D34/78 YELLOWTOP® Sealed AGM Battery

So far battery has worked out and looks great for the price I hope it last a long time.

I have long long long seen these batteries in numerous applications. All the way back to when I was in high school, I would see these in sound systems all over the place. Now that I have an expensive sound system, this is what powers it. I could not be more happier. I can cut off my car and run my sound system for hrs. at a tailgate and my car will crank right up like nothing happened. Easy to install, a little pricy but worth it. Solid Quality and the battery protection system is next to non.

One is great for your Polaris Slingshot. Three is what I use. Yes, I use three of these. I mounted a Zarate tray in the engine bay and now my Audio and lights are connected to the two batteries up front. I ran on of these for the longest for my audio and it worked well but the Volts dropped pretty fast on the one. I have a 320-amp alternator that helps a lot. now with the three batteries, my Slingshot can run for hours, and I don't get any voltage drops. Before I installed these batteries, people kept telling me to put lithium batteries in my Slingshot. I am sticking to what I know works. These batteries are durable and with multiple connections, the installation of your components gives you options. They do weight 26 pounds each, but the quality of these batteries is second to none. Unless someone can convince me to use a different battery, these are the ones I am sticking to.

Nothing wrong with battery (I think), but wasn't in original packaging, wasn't boxed well, accessories were broken ( which I didn't need). Probably was a return that was sold as new.

Fit just fine in my 2000 mustang GT battery holder. No modification needed. No clearance issues etc. I should have bought years ago. The one I got is: Optima Batteries 8014-045 D34/78 YellowTop Dual Purpose Battery The battery was about 1mm longer than the tray (from front to rear of car vs left to right), but the tray just stretches out to accommodate. I laughed and said to myself - "Are you serious?!? that's what I was all worried about?!? Lol!" "Good grief - this fit just fine!!! Lol" :-) 1st pic shows Mustang 2nd pic is looking at battery from drivers side - it shows how the tray stretches to accommodate the 1mm increase in size 3rd shows from the drivers side looking at the front of the battery in the mustang - the thing to notice is that the front side didn't need to stretch since it's already stretched on the back side 4th pic shows mustang from the front and how it's installed without the blue adapter, without the large yellow tray adapter, and without the larger of the 2 red adapters (I left them on top to show how they're not used) 5th picture is from the drivers side looking over the battery to show how I used the red clip that came with the Optima. This red clip is the same as the stock black clip. But the new one looks nicer. 6th picture is from the front at headlight level - they show how I didn't run into any clearance issues. 7th shows no clearance issue. The pictures help. See, the Optima site doesn't list it as fitting in the 2000 mustang GT. But yet we all know people put them in their mustangs... So the discrepancy between the 2 kept me from buying for a long time. But all you do is drop it in, and lock it down. In hindsight, it was really no different than any other battery I have ever installed. I used the new clamp that came with the battery vs the factory because because the new one was clean, red, and looked cool, but it was identical in shape to the factory clamp. There were a few other clamp items (blue tray items) for applications in other vehicle types, and they caught me off guard and so I tried to use all of them - partly because I thought they looked cool, but most because I didn't realize that they're actually for different vehicles; it ended up just being the red one, which was the same as the factory black clip that came with the mustang. The other ones would raise the battery with no benefit. I don't remember if there were any clearance issues if it was raised, but don't bother with them unless you're just having fun with the battery changing project and just want to see. You might save them in case you ever get a new car and want to bring the battery - Optima batteries are notorious for lasting a super long time. But yeah - the yellow top Optima fit just fine in 2000 mustang GT. I was all worried that I was going to need to get an F150 tray from a salvage yard (which was a pretty neat idea that someone had done successfully), or order a new cool fancy tray (but those aren't cheap). Neither are necessary, but they're good to know because the knowledge helps guarantee that can somehow fit if your experience is somehow different than mine. But you won't need to do it. You can still do stuff like that it you want, but do it after you put your battery in - because if your tray is the hard plastic one like mine, there is absolutely no problem putting it in. No modification to your tray is needed. I was very happy about how easily it went in. Can't believe I waffled for years over getting one. The low price on Amazon helped too. The absolute best battery I could get otherwise was around 120 dollars, but not nearly the same quality as the Optima. The Optima red top wasn't much more than that on Amazon, but I went yellow because it is an even better battery. Both the red and yellow are great though - WAAAAY better than other batteries. But most people know that about Optima batteries. I don't think they need people to endorse them. I'm writing this not so much because of Optima's quality (already known), but more so 2000 Mustang owners know that they can get this and be happy. It should be the same for any 99-04 mustang, the red or yellow top. But my knowledge is first hand for the 2000, and the Optima Yellow top Optima Battery that I'm rating: Optima Batteries 8014-045 D34/78 Yellow Top Dual Purpose Battery

Muy eficientes gracias muy buen producto

Optima makes the best batteries that I have ever used. Note in the photo the manufactured date of 4/16, of the original battery. It has lasted nine years in my FJ Cruiser (battery cable mods required). It still holds a charge, but the voltage drops after a couple of days if the car is not run. I won’t pay $200 for a battery with an expected life of 2-3 years. The higher cost of Optima batteries is a bargain.

Too soon to evaluate longevity. First impressions are positive. Replaced 4 year-old Sears Die-Hard, that was installed in my Chevy v-8 powered Jeep. My old battery would no longer hold a charge. I've had many years experience with car/boat batteries, and finally gave up on Sears. Modifications to the battery tray and hold-down strap were required to facilitate the battery's side posts, which are located near the center of the battery, in-line with the stock hold-down bolt/cross strap; I use the side posts for engine start, and the top posts for the Jeep's winch. Initial voltage checks indicated received fully charged (12.69v). Random daily checks indicated ability to retain charge. Static battery drain, do to ECM and radio memory is 7MA. Alternator output at idle measured 14.66v, tapering off to 13.8, which is normal, and expected. Battery came with various case adapters to fit various battery trays. Construction appears first class. Time will tell. I would have ranked the battery at 5*s, but need time and usage experience before giving "100%" endorsement.

Espero una excelente calidad aún faltando le la entrada baja me refiero a la segunda imagen. La batería solo viene con los dos polos y eso es todo.

Great battery

I had an Interstate battery for 12 yrs, when it died I replaced it with 2 smaller I interstate batteries but with a total of more amp hrs. They didn't last 1 yr. but Interstate replaced them under warranty. That was good but the replacement ones didn't last any longer. I didn't bother returning them, didn't see any point to it. That's when I bought this one, installed it and haven't looked back. It's still working as good as day one. I use the battery for electrical lights and other things in my house, not in a car/boat.

works great

Couldn't hold a charge after 11 months. I bought it in January 21 and it stopped holding a charge by December 21. Waiting to see what warranty service is going to be like. I've run with Optima red and yellow top batteries for years. I'd heard the quality had gone downhill since I last bought one, but went ahead anyway. I got burned, never had an Optima go on me after less than a year.