OPTIMA RedTop 75/25 AGM Starting Battery
- 12-Volt, 720 Cold Cranking Amps
- Dual SAE and GM posts
- 44 AH C20, 90 minutes reserve
- 9.38 x 6.81 x 7.75 in, 33.1 pounds
- SpiralCell, 99.99% pure lead
- 36-month guarantee
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A sealed, vibration-resistant AGM starting battery with strong cranking power and dual terminals. It is a starting battery, not built for deep-cycle accessory loads.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B00075OSBKModel: RedTop 75/25Category: Vehicle Batteries
Overview
Drivers of hot rods, off-roaders and daily trucks get a sealed SpiralCell AGM battery with strong cranking in bad weather. Dual SAE and GM posts and a non-spillable build allow mounting in many positions.
Spiral-wound cells resist vibration far better than flooded batteries, which helps rough-riding vehicles. It is aimed at starting and basic electrical loads, not heavy accessory draw.
Who it's for
Cars and trucks that see rough roads or harsh weather suit it. Vehicles with large accessory loads should consider a deep-cycle battery.
Pros and cons
- Strong cold cranking
- Dual SAE and GM posts
- Very vibration resistant
- Mounts in many positions
- Not a deep-cycle battery
- Fit is vehicle specific
Performance notes
Spiral-wound plates are tightly packed and supported, which resists vibration and delivers high current for starting. Reserve capacity sets how long it runs essentials if the alternator fails.
Specifications
| Brand | OPTIMA |
|---|---|
| Model | RedTop 75/25 |
| Dimensions & fit | |
| Size | 9.38 x 6.81 x 7.75 inches |
| Item weight | 33.1 pounds |
| Capacity & performance | |
| Battery capacity | 44 AH (C20) |
| Reserve capacity | 90 minutes |
| Power & efficiency | |
| Voltage | 12 volts |
| Battery Type | Lead acid, sealed AGM |
| Warranty & support | |
| Manufacturer Warranty Description | 36-month guarantee |
| Other details | |
| Terminal | Dual SAE and GM posts |
| Number Of Cells | 6 |
| Cold cranking amps | 720 |
Frequently asked questions
How do you install the OPTIMA 75/25 REDTOP?
It has dual SAE and GM posts and can mount in many positions; check that the 9.38 x 6.81 x 7.75 inch case fits your tray first.
Is the OPTIMA 75/25 REDTOP maintenance free?
Yes. It is sealed, maintenance free and non-spillable.
How many cold cranking amps?
720.