OPTIMA Batteries High Performance D34M BlueTop Dual Purpose Deep Cycle and Starting Sealed AGM Boat and RV Battery, 750 CCA, Dual Terminal, Maintenance Free, Versitile Mounting

This is the ONLY battery you'll ever see in my boat !! Holds a charge a long time and can go the distance running lights and sound system for hours then still crank the boat up like a boss. I keep a tender on it all winter, then in Spring it fires my boat right up like it was brand new !!

I bought this battery a bit over 1 year ago (on May 2023). Even after completely charging the battery on an OPTIMA charger, the battery would barely crank over a 20 hp outboard motor. I should have tried to return the battery then, but it still worked (barely), and I needed it for the boat. In Nov 2023 the battery was placed on an OPTIMA charger over the off season. Once again, this spring, the battery is still weak. The battery is not much better than the OPTIMA battery I replaced which I used for 9 years! Very disappointed and I will not be purchasing OPTIMA batteries again. UPDATE: I called customer service and explained the problem, and they will honor the warranty. Following the phone conversation, I got an email that said: We will need a picture of your proof of purchase and a picture of the bar code on the side of the battery Put your case # in the subject line and email to [email protected] I have yet to send in the info, but it seems like I will be able to get a replacement (I'll update here if I do not) So, great Optima customer service! (I knocked off one star as I did receive a faulty battery) Last update: Replacement battery just arrived!! Added back a star

Does a great job for our ev

I have purchased many blue top batteries over the years. Never disappointed.

Blue Top Optima batteries used to be best to-go options for people who want to have a little more oomph or use deep-draw accessories, such as winches, etc. Not anymore. I've had 5 of these in several vehicles. This is the second time I buy this same model battery AND have it die. Previous one retaining 12V at 13-14months after bought, would drain in 2 days, tops. This one, the replacement, just stopped charging beyond 06V, out of the blue (likely the cells inside became disconnected?). Several attempts to bring it back, using various chargers (including the Optima one, which is expensive AND useless ) have yielded no positive result. Now, the warranty is being handled by Optima directly, and it's a royal pain in the ass with tap dancing steps and obstacles to providing warranty to the customer. Where it was, once, easy to reach and get warranty, now they are intent on making it a terrible experience for customers. Not the wisest notion. This has been my last Optima Blue Top. I don't know what is going wrong there, but their QAQC is either absent or woefully inadequate. Have started the painful process of getting warranty for this, and not feeling happy about it, whatsoever. Also hoping their Yellow Top series has not followed same sad end. Loom elsewhere for your next such battery.

With the price of batteries these days , I hated to spend the money, but this battery is lighter than most. Making easier to take in and out of my boat. High quality and long lasting charge.

Much lighter than a walmart battery so far so good, we will see if it holds up with a all day fish, I will update later Upadate 4/20/16 Used this 8 hours on a 52 lb minn kota, It was windy and I used it hard hard figured it would go down before I left the lake, I was afraid it would not start my 25 hp motor, At end of day my trolling motor has a gage to check battery reserve and it said 3/4 full is that impossible so I had another battery checker and it checked 3/4 full can that be true, can that light of a battery hold that kind of reserve, If this is true and I guess it is,this is the only battery I will ever have. Finally something that gets me thought the day and I can carry from the boat that does not weigh a ton, I will update if things change. Update 5/3/16. Ok had it out 11 hours used hard hard, showed 12.2 volts, check with meter showed 1/2 charge left, unbelievable only battery I will own know matter the cost. Will update after a year 5/1/17 Ok bought a bigger boat with a older foot controlled trolling motor, the battery. We fished and used it from 9:00 am until 8:00 a 11 hour day of pretty much nonstop. After about 11 hours battery died. I still am very happy, if I had to do it over I would of bought the D31M check it out. It has 75 ah. That would have enough to run the day. Just a thought. It not that much more to buy the 31. My friend has a 31 and has had it for years maybe 6 or 7. Still works perfect.

I’ve updated from one to 4 stars because Optima and Amazon worked to get me a warranty replacement. Used less than 3 months as a deep cycle accessory batter (3-5 amps total draw during that time). Used a float charger especially designed for AGM batteries; battery was never depleted. Voltage 3.5v today and won’t take a charge. YTD Sport was the seller (through Amazon) and punted to Optima. “Customer service”. At least with a brick and mortar store you take it back and they take it—no hassle. Live and learn.

Great battery no complaints

Use this batterie on my boat working great

House battery for sailboat. Perfect fit. Delivered on time.

Battery does not hold charge. I had Optima batteries before, I only use Optima batteries for my cars and trucks but this time I'm having a bad experience. maybe its cause I ought it on amazon and batteries are old. I had good experience with Amazon too just waiting for their response. Will review again. buy from your local store these guys are not covered under warranty i'm stuck with two batteries and lost $800 usd very sad

Exceptional product