Purchased in 2022. Dead already. Way too short of a life for a $300 battery.

Had to adapt battery hold down to fit. Couldn't use OEM fit. Other than that works perfectly.

It's an Optima battery that comes sealed and double boxed. Packed perfectly! What more can I say!?

I was afraid of buying it with so many negative feedback on Amazon, but up to today, it's been working no issues. And I do have a dash cam that's connected 24/7 directly to thr battery. No sign of battery drain. Holding up great.

It’s been about two weeks since I installed it to replace a dead 12 volt for my 2018 Outlander PHEV. Crossing my fingers it lasts longer than a few years.

Wish there had been an accurate review for me to base my decision to buy.My battery came discharged to 10v when I received it.It does not supply the rated CCA of 450amp, it does not hold a charge: in 2 minutes it will drop from 13v to below 12.5v at room temp 72’F.At temp outside, 40-50’F, it drops to 11.5V.This is an expensive paperweight, be advised.Also Amazon won’t return this, you’re immediately stuck trying to work through the manufacturer.Absolutely do not buy, you’ll get a bad battery and be stuck with an ordeal, save your money.

A high quality and durable battery that provides peace of mind the car will start. I’ve had a number of typical lead acid batteries that fail in less than two years. This AGM battery delivers results for many years.

Easy install starts like a champ

Excelente calidad, muy buena bateria

I purchased an Optima D51R Yellow Top in July 2019. The battery worked fine, but has recently died and will no longer take a charge. Optima clearly states this item has a 36 month warranty and all warranty logistics, etc. will be handled by the retailer - easy enough...The problem is, Canada Direct is NOT an authorized dealer for Optima products! They have tried to tell me it's only got a 30 day warranty, that I need to take it up with Optima, that I need to start a warranty claim/case with Optima and hand it off to them, etc. BASICALLY EVERYTHING EXCEPT STANDING BEHIND THE 'PREMIUM' PRODUCT THEY SOLD ME!BUYER BEWARE - IF YOU CAN FIND THE OPTIMA BATTER YOU NEED ELSEWHERE, GET IT. CANADA DIRECT WILL HANG YOU OUT TO DRY ON A ~$400 BATTERY IF IT STOPS WORKING WITHIN THE WARRANTY PERIOD!

Compared to any stock battery, this battery wins, always. Canadian winter vs. this in a 2012 honda civic, it starts on the first turn, EVERY time.

Just thought I'd add a review since I've noticed that many websites having incorrect recommendations about which batteries will fit in the Highlander since they do not differentiate between the hybrid and non-hybrid versions. (Hybrid = Size Group 51R)So, the 5 star rating is purely for the fit---I will update this review if the battery does not perform comparably or better than the battery it's replacing--- it's an exact fit for the battery indentation at its base (where battery temp gage can monitor it accurately + keep it from sliding) as well as for the battery cover to slide down over top of it in a 2006 Toyota Highlander Hybrid.And for anyone else purchasing for this vehicle, here was my reasoning for choosing this particular battery:So, I was initially hesitant to buy this battery since it had a lower CCA (450) / CA (575) / RC (66) than its previous battery, which was an Autocraft Gold 51R-2 (standard lead-acid flood) battery with CCA 500, CA 625, RC 85 min. However, since the Highlander hybrid's engine is started by the traction battery and not the 12V battery (and therefore not utilizing peak CA draw), it's my presumption that having a deep cycle battery will hold up better in the long run since the '06 HH has a tendency to suck batteries dry in relatively short periods of time (which generates hybrid system fault codes if the 12V runs too low to run the controllers)---and since AGM batteries can accept a charge faster than a standard battery and have a slower self-discharge rate, it might tolerate the constant charging/discharging better over time.(Side note: the Autocraft battery was already above OEM requirements, so dropping to a lower CA battery should not be a problem in this instance.)In short: despite a lower peak & average cranking amps, I'm thinking that the YellowTop's more favorable charge/discharge properties (and longer lifespan) may make this a better choice for my vehicle.***UPDATE, 3 YRS OUT***Lasted almost exactly 3 years; not holding a charge like it should now, but still useable until the replacement arrives with an occasional booster charge. I think what finally did it in was when the battery had a total discharge when I was gone for around 3.5 months in the winter - didn't seem to hold a charge properly afterward (using an AGM smart charger), though it worked for several weeks. I think the lifespan was acceptable given that it was always outside in the Sacramento-heat / triple-digit summers. I plan to purchase this again.

Ordered on a Sunday, received Monday evening. Installed it and it fit perfectly. I wanted a bigger Yellow or Red Top with more CCA but this one is alright. I have a friend who has a yellow top and he barely drives his car plus stores it in the winter and he doesn't store the battery any special way. He just disconnects it. And that was a selling point for me as I drive my car everyday so I should never have a problem with it. Item came well package and I'd definitely recommend it.