OPTIMA RedTop 34R AGM Starting Battery
- 800 CCA, 12-volt
- 50 AH C20, 100 minute reserve
- 99.99% pure lead SpiralCell design
- SAE posts, 10.06 x 6.88 x 7.88 in
- 37.9 pounds
- 36-month guarantee
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A sealed AGM starting battery with high cranking power and a three year guarantee. Check post placement against your car before ordering, since the listing does not show terminal layout.
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ASIN: B000MS9VZAModel: RedTop 34RCategory: Vehicle Batteries
Overview
OPTIMA builds this RedTop around SpiralCell plates of very pure lead for strong starts in harsh weather. The sealed, non-spillable case needs no maintenance and holds a charge longer on the shelf.
A three year guarantee and vibration resistance make it a long-term starter for rough use. Faster recharging helps after short trips. Terminal layout is not described.
Who it's for
Cars and trucks in harsh climates or rough terrain suit the AGM build. Shoppers who have not confirmed their battery group and post side should check first.
Pros and cons
- Three year guarantee
- Sealed, maintenance free
- High vibration resistance
- Strong cold starts
- Terminal layout not described
Performance notes
Tightly wound cells resist shaking that breaks flat plates, extending life on rough roads. Low internal resistance lets it accept charge quickly. Cold cranking stays strong in bad weather.
Specifications
| Brand | OPTIMA |
|---|---|
| Model | RedTop 34R |
| Dimensions & fit | |
| Size | 10.06 x 6.88 x 7.88 in |
| Item weight | 37.9 pounds |
| Capacity & performance | |
| Capacity | 50 AH (C20) |
| Reserve capacity | 100 minutes |
| Power & efficiency | |
| Voltage | 12 volts |
| Battery Type | Sealed AGM lead acid |
| Included components | |
| Included Components | Battery |
| Warranty & support | |
| Manufacturer Warranty Description | 36-month guarantee |
| Other details | |
| Terminal | SAE Terminal |
| Cold cranking amps | 800 CCA |
Frequently asked questions
Do I need to add water to the OPTIMA 34R?
No. It is a sealed, maintenance-free, non-spillable battery.
What guarantee comes with the OPTIMA 34R RedTop?
A 36-month guarantee.
How long will it run accessories with the engine off?
Reserve capacity is 100 minutes.
What size is it?
10.06 x 6.88 x 7.88 in, 37.9 pounds.