Optima Batteries 8040-218 D35 Yellow Top Dual Purpose Car Battery

Last updated: July 17, 2020

We looked at the top Car Batteries and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Car Battery you should buy.

Product Details

In our analysis of 104 expert reviews, the Optima Batteries Yellow Top Dual Purpose Car Battery placed 10th when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

12-Volt, 620 Cold Cranking Amps, Size: 9 5/16″ x 6 13/16″ x 7 5/8″ tall, Weight: 36.4 pounds, SAE Post,.300+ discharge/recharge cycles. 98 minutes reserve capacity for constant performance. Optimal starting power even in bad weather; the positive or red terminal is located to the right. Fifteen times more resistant to vibration for durability. This item is not for sale in Catalina Island. C20 Capacity – 48 Ampere hour.

Expert Reviews

What reviewers liked

Superior recharge rate. Superior starting power and long-term energy. Fast recharge rate of 4 to 6 hrs.
Thanks to its thick, durable plastic exterior and use of AGM technology, this battery has 15 times the level of vibration resistance as competing products.
It’s also nice to note that this battery is maintenance free. So you won’t need to worry about getting your hands dirty, adding any water, or cleaning up any spills. Even better, I never experienced any leakage or corrosion during our time with it.
It excels in the two most important departments, more precisely the CCA and MCA rating sections, boasting a 620 amps CCA rating and a 770 amps MCA rating.
Reasonable price in comparison to other AGM models.
- Zentiz
That’s an impressive punch for such a small battery. Paired with a three-year warranty from Optima Batteries, the 8040-218 D35 YellowTop model is the best dual purpose marine battery for a great price.
This battery is ideal for vehicles that require more power due to electronic connectivity.
Whether you are looking to power your new audio system or you need the extra starting power to get your engine going, the YellowTop should be able to provide everything you need. This battery also has the added benefit of being easier to install than many other options that you can choose from.
What’s nice about this model is that it’s small and lightweight making it very portable.
The battery is a small and lightweight making it very portable. It weighs 36 pounds and measures less than 10 by 7 inches.
Overall quality of the material and ability to crank over the engine in various weather conditions is really impressive.
It has also been praised because of its optimal power, allowing it to be useful even for trucks and vehicles that are equipped with high-powered electronics.
With great endurance, it functions well when electrical loads are higher and it is ideal for drag racers. With constant performance at a great price, the spiral cell design helps you out with this awesome battery with optimal starting power.
Optima is the best car battery for cold weather because of its low self-discharge rate and for having the ability of immediately returning to its standard charging despite a long winter hiatus.
It is one of the only genuine dual-purpose batteries on the market, making it perfect for a wide variety of demanding applications. And, as a bonus, it also has premium cranking power that ensures reliable starts no matter the conditions.
Has a reserve capacity of 98 minutes to perform with absolute consistency
The overcharging issue can be experienced due to the AGM technology used in this battery. Therefore, you should charge it carefully to make sure that you do not overcharge the battery as it can damage the performance and reduce the battery life.

What reviewers didn't like

Sporadic, anecdotal evidence of battery life that lasts less than one year.
Because this battery uses AGM (absorbent glass mat) technology, you’ll need to charge it carefully to avoid overcharging and damaging the battery.
Not a direct fit for most battery boxes
Although the AGM technology implies a higher sensibility to overcharging, the upsides of this design clearly outweigh this downside that can be prevented through carefulness when charging.
Terminal hardware is not provided on purchase.
- Zentiz
However, this model is quite more expensive than the Optima RedTop.
Overcharging the battery can damage it
Though it costs right around 170 dollars which is what the price point should be, it fits in a wide range of vehicles.
Warranty from third-party sellers hard to be honored
Might be a difficult fit in some cars
Chances of overheating as it is an AGM battery
The overcharging issue can be experienced due to the AGM technology used in this battery. Therefore, you should charge it carefully to make sure that you do not overcharge the battery as it can damage the performance and reduce the battery life.
View our Car Battery buying guide for in-depth advice and recommendations.

From our partners