OPTIMA Batteries High Performance 78 RedTop Sealed AGM Car, Truck and SUV Starting Battery, 800 CCA, Side Terminals, Maintenance Free, Versitile Mounting

Reliable power to start your diesel truck is crucial. Especially when you have two batteries paralleled, they both have to be on the same page. I had tried 3 separate times with flooded Interstate batteries from Costco, but they just couldn’t handle the demand of a diesel truck. I finally bit the bullet on these AGM Redtop Optima’s and I couldn’t be happier. They start my truck fast every time and charge faster with the alternator so it doesn’t have to work as hard and lasts as long as possible. Highly recommend for a diesel truck application!

This is for my 1948 Mercury coupe. Just the right size.

My last Optima lasted 9 years. At 83 years old, this one will probably outlive me.

So I bought an Optima battery in September, goes bad in February, Three Hundred Dollar battery that wound up being a core charge trade in at the parts store, only five months old, Sent an email to their warranty and I get back this response wanting to know current voltage of the battery, what voltage I'm charging it at, frequency and distance the vehicle is being driven, do I have any aftermarket accessories ECT. I should have known better and gone to the parts store and bought it, guess what, if one goes bad there under warranty they replace it, Lesson Learned, for me it's Never buy another Optima battery and for sure never buy anything like that on Amazon.

Cant go wrong getting one of these Hi end , Hi out put batteries, Street Rods Love them !!

I bought this battery for my RV. Not a motor home but a trailer. For my energy consumption needs this is the best priced battery.Let's look at some basic specifications. Cold Cranking Amperes is a useless specification when the battery is to be used in an application where an engine or large electric motor is not used. For RV owners the most important specification is the Ampere Hour rating (AH). In short, the AH rating is the capacity of a battery to hold electricity. Just like a large glass holds more water than a small glass, batteries hold more or less electricity than one another, but in the case of batteries, they have different capacities even if they are physically the same size.This battery is rated at 50 AHs. That means that if you had all the lights on at the same time in your RV and they consumed 5 amperes, this battery would keep them lit for 10 hours (50 amp hours divided by 5 amps equals 10 hours). If the electric load was 15 amperes then this battery could run this load for 3.33 hours, and so forth.When purchasing a battery for your RV you can determine the better buy by dividing the cost of the battery by the AH rating. A $150.00 battery specified to offer 50 AHs equals 3AHs per dollar. A $130.00 battery rated at 10 AHs equals 13 amps per dollar, making it a far more expensive battery - UNLESS 10 AHs is all the capacity you need.Replace the incandescent lights in your RV with LED lights and the energy needed to light your RV will be cut by 75%. Also remember intermittent electricity use like your water pump and overhead fans.

I have an Optima that is 21 YEARS old & still starts my 4cyl pkup!! It has been in constant use & NEVER run down. Is that a record?? I'm not sure they are still made to this standard. Even with an Optima charger I've had little luck revieving a dead Optima. With almost NO corrosion or maintence, I feel they are worth the extra cost for a vehicle in regular use. They DON'T like being charged like a regular battery but can be jumped to get going again, don't trust they will accept enough of a charge to start you again once you shut off. Trickle chging has worked best for me.

It's a great great battery!