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The Optima Battery D34M Blue Top is a 20-pound, compact powerhouse designed for superior cranking power and durability. Featuring a distinctive blue top casing, it fits OEM specifications (D34M-950, 8016-103) and delivers reliable performance for demanding engine starts, making it the go-to choice for professionals who refuse to compromise.
| Manufacturer | Optima Battery |
| Brand | Optima |
| Model | Optima Battery D34M Blue Top Battery |
| Item Weight | 20 pounds |
| Product Dimensions | 10 x 6.88 x 7.81 inches |
| Item model number | 8016-103 |
| Manufacturer Part Number | D34M |
| OEM Part Number | D34M-950, 8016-103 |
P**.
Early death and no warranty
I bought 3 of these BlueTop batteries, as starter batteries for my sailboat (24V for engine, 12V for generator). One of the batteries started degrading after about a year and wouldn't keep a charge above 12.3V (when the other 2 are happily staying at 12.9V). After trying to recondition it with a higher charge profile/mode, the battery's health didn't improve and had to be disposed of. I'm getting the runaround from Amazon regarding the warranty. Optima has a 2 years warranty on the BluetTop batteries. Doxa-Worldwide, the seller on Amazon will not honour the warranty either. So now I only have Optima, the manufacturer, left to honour the warranty.
R**E
Don't buy
I bought three of these batteries. The first, bought in 2011 lasted 6 years. The second Optima blue top, bought in 2017 lasted barely 2 years. The third Optima blue top didn't even last 2 years. They obviously lost a customer.