OPTIMA Batteries High Performance 34/78 RedTop Sealed AGM Car, Truck, and SUV Starting Battery, 800 CCA, Dual SAE and GM…
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Best for
Best for cold climates
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$268.26
Updated Jun 27, 2026 · 1 min read
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
The Optima 34/78 RedTop is a starting-focused AGM rated at 800 CCA, which is the relevant spec for cold-weather cranking, and it draws a 4.4 average across roughly 1,895 verified-purchase ratings\u2014one of the better volume-plus-average combinations in the pool. Unlike the dual-purpose YellowTop line, the RedTop is built specifically for high starting power rather than deep cycling. We found no independent lab or specialist-community testing in the supplied signals, so the cold-climate suitability here is inferred from its rated CCA and the consistent retailer feedback rather than verified by a testing source.
What reviewers liked
- High 800 CCA rating well suited to cold starting
- Strong verified-purchase volume (~1,895) at a 4.4 average
- Dual SAE and GM terminals for broad vehicle compatibility
- Maintenance-free sealed AGM design
Where it falls short
- Starting-focused design is not ideal for deep-cycle accessory use
- Premium price relative to mainstream AGM units
- No independent testing was present in the supplied data to confirm cold-weather longevity
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The Optima 34/78 RedTop is a starting-focused AGM rated at 800 CCA, which is the relevant spec for cold-weather cranking, and it draws a 4.4 average across roughly 1,895 verified-purchase ratings\u2014one of the better volume-plus-average combinations in the pool. Unlike the dual-purpose YellowTop line, the RedTop is built specifically for high starting power rather than deep cycling. We found no independent lab or specialist-community testing in the supplied signals, so the cold-climate suitability here is inferred from its rated CCA and the consistent retailer feedback rather than verified by a testing source.
- Battery Specs
- 12-Volt, 800 Cold Cranking Amps, Size: 10.06" Long x 6.94" Wide x 7.88" Tall, Weight: 38.8 pounds, Dual SAE & GM Posts, C20 Capacity: 50 AH
- RESERVE CAPACITY of 100 minutes for constant performance. Faster charging capabilities.
- Spiralcell Technology
- SPIRALCELL TECHNOLOGY with 99.99% pure lead delivers more power and consistently outperforms conventional flat-plate batteries. Optimal starting power even in bad weather.
- Long Lasting
- Fifteen times more resistant to vibration than standard flooded battieres for durability and Up to 3 times longer life vs. standard flooded batteries.
- Maintenance Free
- For maximum convenience. Ideal for basic electrical demands.
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