Optima YellowTop D35 Dual Purpose Battery - OPT8040-218

Kenneth Mount: Optima Batteries are the best! Why spend 200 bucks on regular battery when you can buy basically a deep cycle gel filled battery for 100 bucks more? Answer, it's worry free & will never leave you without cranking power to start your car or reserve power for stereo system, car hydrologic's, etc.

United States on Dec 07, 2023

JAY: No issues whatsoever

United States on Oct 21, 2023

Epicurious: This product does not hold charge after less than 18 months. Won't even keep enough juice to unlock the doors from the remote (overnight charge = nothing).

Terrible product and terrible service on the warranty by both Amazon and Optima. Still don't have a battery or money back. Buy 3 cheap $100 batteries, they will outlast this one.

Shame on Amazon for not honoring the warranty and using stall tactics to avoid and defer refunds.
Despite the warranty information file that amazon publishes on their own site, they are trying several tactics, like requesting denial of service emails from Optima being forwarded to Amazon customer service, likely hoping consumers will just walk away. Clearly Amazon has refunded others based on the reviews, so they are aware of Optima's policy, so this is purely a stall tactic. All this despite the clearly stated policy that is published on Amazon and Optima websites below:

OPTIMA Batteries, Inc. expects its distributors/dealers to warranty to the original user batteries used within the United States for models D27F, D34/78, D75/25, D34, D35, D51, D51R; the following Guarantee Warranty : PERSONAL CONSUMER...

United States on Feb 10, 2023

Venia: Very much supply my gadgets (ham radio)

Canada on Apr 24, 2022

lei: awesome brand

Canada on Dec 26, 2021

Francisco E : Hola, quisiera saber donde puedo hacer valida la garantía de la esta bateria optima yellow. La compre a finales de diciembre 2020 hace 4 meses y ya no retiene la carga, si apago el auto ya no enciende, le puse la bateria original y esa no me ha dado problemas. Muchas gracias.

Mexico on Apr 16, 2021

905Canuck905Canuck: Dead after 2 years. My battery says right on the label that it has a "3-year free replacement with proof of purchase" and "For warranty service return battery to location where originally purchased." Canada Direct - Often Ships Same Day (the company's full name) sold me the battery.

Canada Direct - Often Ships Same Day: "... for warranty claims this is handled by Optima directly. For us we fully abide by Amazon's 30 days returns policy."

Optima: "Optima does not supply Amazon.ca with batteries. The warranty is listed on the top label of your battery and is the warranty period Canada Direct should be using." "Just for future reference we don't recommend buying batteries from Amazon.ca or any online reseller that is not an authorized seller. "

"Canada Direct - Often Ships Same Day" also goes by "Piece of Cake LTD" and "Lots of Stuff", which makes it hard to track down contact information. Amazon won't give it to you.

Canada on Jan 24, 2021

PEDRO CARVAJAL LOZANO: Producto correcto entregado en tiempo y forma

Mexico on Nov 08, 2019

Nick and LeaNick and Lea: Confirmed fit in 2001 Porsche 911 (996) 3.4L Coupe. This battery is the best battery you will get for your Porsche. Typically I get about 7 years out of the yellow top and most of us don't daily our 911s so a deep cycle battery like this one won't let you down. Deep cycle batteries are tough and Optima gel cell batteries resist vibration, which is the primary killer of a battery. My 996 tends to sip down electricity just sitting. Repeated draining of the battery will kill a standard battery , even a red top Optima... which are trash (IMO) but the yellow won't suffer nearly as bad as a standard battery. Car cranks nice and strong every time even if she sits for a week or two.

Pro Tip -

Mounting : This battery is NOT a direct fit to the battery box. Optima doesn't make a direct fit replacement battery for a Porsche 996 at the time of this post. A custom spacer is needed to lock down the battery so it doesn't move. Some people use a high density plastic, like a thick cutting board to fashion one. I used a 12mm or 13mm combo wrench as a spacer. It was the perfect size, shape and had the rigidity to do the job. I was able to really crank it down and the...

United States on Feb 01, 2017

AntennaMan: 1-23-2011b, Yellow Top D35.

Hi there,

Summary:
The price was good, it arrived without any shipping damage, so far the battery works fine. D35 Battery, $167, $194 after shipping. It took Amazon more than 2 days, UPS 3 days, for a 5 day total to ship to me. This (Amazon time) should be shorter...

Background:
I'm a HAM Radio operator, and my radios dont like Voltages less than 11.7V (They claim). I have a FT-857d, and and after talking on the radio for about 2-3 minutes, my cars battery battery was running at 12V, and in less than 5 minutes it was at or below 11.7V. This was on my 2-3/4 year old Autolite Platinum (RC=100) battery. It started my car fine, but its Voltage sagged under a 20 Amp load. And I was tired of the effects of battery acid leaking. So I decided to change to a AGM type battery, because it was more designed for how I was using the cars battery. And, it dose not leak or out gas acid...

So far the Yellow top battery is holding up much better, than my 2 year old (flooded cell) battery was.
One reason I choose this battery is it claimed its charged open circuit Voltage was (fully charged) 13.1V instead of the more...

United States on Dec 28, 2011