US
OPTIMA

OPTIMA 35 REDTOP Sealed AGM Battery

  • 720 CCA Cold cranking amps from the item highlight
  • Starting battery Sealed AGM for cars, trucks and SUVs
  • 12 volts, SAE terminal Lead acid construction, vehicle specific fit
  • 31.7 lb case Measures 6.75 in deep, 9.38 in wide, 7.69 in tall
  • Maintenance free Non-spillable, mounts in many positions

Updated 23 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A hard-starting battery for trucks, off-roaders and hot rods that face harsh weather. It is built for cranking, so it is the wrong tool if you want to run heavy accessories off it for long.

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ASIN: B000MS9VZKModel: 35 REDTOP

Overview

Aimed at passenger cars and trucks, this sealed AGM lead acid starter has SAE posts. The maker describes a spiral cell design and a leak-proof case, and says it recovers charge faster than a conventional battery.

Its strength is cranking power in tough conditions, which suits modified engines and off-road use. The listing also credits strong vibration resistance and longer life than standard flooded types. It is not a deep cycle design, and the part numbers on the listing do not agree with each other, so verify the group fit before buying.

Who it's for

Hot rod builders and off-roaders who shake a battery hard and need it to fire every time. The sealed case lets it be mounted away from the usual tray. Boat owners wanting a house bank should look at a deep cycle product instead.

Pros and cons

Pros
  • Strong cranking in harsh weather
  • Leak-proof, positionable case
  • Maintenance free, no refilling
  • Quicker recharge than flooded types
Cons
  • Not meant for deep cycle loads
  • Listed part numbers disagree
  • Warranty terms not stated clearly
  • Amp-hour capacity not published

Performance notes

Cranking output follows the cold cranking figure on the listing. The spiral cell build is credited with clean power and with vibration tolerance well above a conventional battery. Quick charge recovery helps vehicles that make many short trips.

Specifications

BrandOPTIMA
Model35 REDTOP
Dimensions & fit
Item Dimensions D X W X H6.75"D x 9.38"W x 7.69"H
Item Weight31.7 pounds
Size9.38 x 7.69 x 6.75 inch
Power & efficiency
Battery TypeLead Acid
Voltage12 volts
Compatibility & installation
Compatible With Vehicle TypePassenger Car, Truck
Included components
Included ComponentsBattery
Warranty & support
Manufacturer Warranty DescriptionPlease see manufacturer
Other details
Automotive Fit TypeVehicle Specific Fit
TerminalSAE Terminal

Frequently asked questions

Is the Optima RedTop good for a deep cycle setup?

No. It is sold as a high power starting battery for cars, trucks and SUVs, not as a house bank.

Does it need watering?

No. It is sealed and described as maintenance free.

Which terminal does the RedTop use?

It has SAE terminals, the common post style on passenger vehicles.

Is the model number clear on this listing?

Not fully. The part numbers shown differ between fields, so match the group size and terminal layout to your vehicle before ordering.