# Optima RedTop 34/78 (8004-003): specs and price

**Price (US):** $279.99 (US street price $279.99, sourced verbatim from the BigTimeBattery listing ("Optima Red Top Battery, Group Size 34/78, 800 CCA ... $ 279.99") for the Optima Red Top 34/78 (8004-003). OPTIMA publishes no formal MSRP, and the Remy Battery listing for the same battery shows "Contact for Pricing". No refundable core charge is noted on the fetched page.), as of 2026-07-13. Among the 6 car batteries we track it is #4 cheapest of 6; category median $277.
**Brand:** Optima Batteries
**Deskmark:** Bronze Deskmark — pay-blind category standing 41/100, #7 of 9 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $279.99 |
| Brand | Optima Batteries |
| Battery type | spiral-wound-AGM |
| Bci group size | 34/78 |
| Cold cranking amps | 800 |
| Cranking amps ca | — |
| Reserve capacity min | 100 |
| Capacity ah | 50 |
| Terminal type | dual |
| Weight (lb) | 38.8 |
| Warranty months | 36 |
| Maintenance free | Yes |
| Dimensions inches | 10.06 x 6.94 x 7.88 |

## Where it stands

At $280, the Optima RedTop 34/78 (8004-003) is #4 cheapest of the 6 car batteries we track, where the median is $277. On the spec sheet, its reserve capacity min of 100 is the lowest of the 9, its capacity ah of 50 is the lowest of the 7, and its weight of 38.8 lb is the lowest of the 7.

## What reviewers say

Only one whitelisted tester covers this battery. Pro Tool Reviews names the Optima RedTop its best-value AGM pick, praising reliability, longevity and vibration resistance while flagging a lower CCA rating than pricier rivals. This is a qualitative buying-guide verdict for the RedTop line (which includes the 34/78), not a bench test of the 8004-003, and no whitelisted outlet published measured lab numbers for this exact model. (Based on 1 review, 2025-01-17.)

Praised: Best-value AGM pick — reliable and worth the price premium; Spiral-cell design resists vibration and outlasts standard lead-acid; 3-year replacement warranty, widely available in-store and online.
Flagged: Lower CCA rating than competing AGM batteries; Heavy-electronics or auto stop-start vehicles need the pricier YellowTop; More expensive than standard lead-acid batteries.
Disagreement: Only one whitelisted source, so no cross-source comparison is possible. Pro Tool Reviews' verdict is a field-experience buying-guide recommendation of the RedTop line (which includes the 34/78) rather than instrumented lab testing of the 8004-003; its cited CCA (720-800) and reserve (90-100 min) figures are manufacturer spec ranges, not values the tester measured.
Sources: Pro Tool Reviews (2025-01-17, protoolreviews.com)

## Frequently asked questions

**What do reviewers say about the Optima RedTop 34/78 (8004-003)?**

Only one whitelisted tester covers this battery. Pro Tool Reviews names the Optima RedTop its best-value AGM pick, praising reliability, longevity and vibration resistance while flagging a lower CCA rating than pricier rivals. This is a qualitative buying-guide verdict for the RedTop line (which includes the 34/78), not a bench test of the 8004-003, and no whitelisted outlet published measured lab numbers for this exact model. Praised: Best-value AGM pick — reliable and worth the price premium; Spiral-cell design resists vibration and outlasts standard lead-acid; 3-year replacement warranty, widely available in-store and online. Flagged: Lower CCA rating than competing AGM batteries; Heavy-electronics or auto stop-start vehicles need the pricier YellowTop; More expensive than standard lead-acid batteries. (From 1 tester review.)

**How much does the Optima RedTop 34/78 (8004-003) cost?**

The Optima RedTop 34/78 (8004-003) has a US price of $279.99 (US street price $279.99, sourced verbatim from the BigTimeBattery listing ("Optima Red Top Battery, Group Size 34/78, 800 CCA ... $ 279.99") for the Optima Red Top 34/78 (8004-003). OPTIMA publishes no formal MSRP, and the Remy Battery listing for the same battery shows "Contact for Pricing". No refundable core charge is noted on the fetched page.), as of 2026-07-13.

**How does the Optima RedTop 34/78 (8004-003) compare on price?**

At $280, the Optima RedTop 34/78 (8004-003) is #4 cheapest of the 6 car batteries we track, where the median is $277.

**What are the Optima RedTop 34/78 (8004-003)'s key specs?**

Optima RedTop 34/78 (8004-003) (Optima Batteries): batteryType spiral-wound-AGM, bciGroupSize 34/78, coldCrankingAmps 800, reserveCapacityMin 100, capacityAh 50. Full sourced spec sheet verified 2026-07-13.

Source: https://www.optimabatteries.com/products/redtop-34-78 (optimabatteries.com, accessed 2026-07-13)
Corroboration: https://bigtimebattery.com/store/Optima-Red-Top-Battery-Group-Size-34-78-800-CCA.html (accessed 2026-07-13)
Canonical: https://frontdeskreview.com/product/car-batteries/optima-redtop-34-78/
Cite: Per The Front Desk Review, the Optima RedTop 34/78 (8004-003) price of record was $279.99 as of 2026-07-13 — https://frontdeskreview.com/product/car-batteries/optima-redtop-34-78/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl