# Kronobat PE-85-EFB · Start-Stop battery 12V 85Ah 800A ![Kronobat PE-85-EFB · Start-Stop battery 12V 85Ah 800A](https://bateriasonline.es/2315-home_default/kronobat-pe-85-efb.jpg) > Kronobat PE-85-EFB: 85 Ah Start-Stop battery, 800 A (EN), 306×173×225 mm, positive terminal on the right, D31 case, EFB. Equivalent to Varta N85. **Category:** [Start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) → [Kronobat](https://bateriasonline.es/en/kronobat-batteries) - **Canonical URL**: https://bateriasonline.es/en/kronobat-pe-85-efb - **Language**: en - **Brand**: Kronobat - **Reference**: BOL-KRONOBAT-PE-85-EFB - **MPN**: PE-85-EFB - **Last updated**: 2026-10-27 ## Technical specifications | Feature | Value | |---|---| | Brand | Kronobat | | Range | PREMIUM EFB | | Application | Start-Stop cars | | Technology | EFB | | Voltage | 12 V | | Capacity | 85 Ah | | Cold cranking amps (EN) | 800 A | | Length | 306 mm | | Width | 173 mm | | Height | 225 mm | | Weight | 26.4 kg | | Polarity | Positive terminal on the right | | Case size | D31 (306 × 173 × 225 mm) | ## Quick description Kronobat PE-85-EFB: Start-Stop battery (EFB) with 12 V, 85 Ah and 800 A cold cranking current, case size D31 (306 × 173 × 225 mm), with the positive terminal on the right. ## Description ## The Kronobat PE-85-EFB at a glance The Kronobat PE-85-EFB is designed for automatic engine stop and regenerative braking. The PE-85-EFB is designed for cars that switch the engine off at every stop and restart it dozens of times per trip. At 85 Ah it moves into large diesels, SUVs, vans and cars with heavy electrical equipment. The PE-85-EFB belongs to the Kronobat PREMIUM EFB range. [More Kronobat batteries](https://bateriasonline.es/en/kronobat-batteries) ## Part numbers and codes for the Kronobat PE-85-EFB This is how the Kronobat PE-85-EFB appears on the label and in parts catalogues: | Commercial reference | PE-85-EFB | |---|---| | Case size (EN) | D31 | | Not to be confused with | Kronobat PE-65-EFB (65 Ah, 650 A), Kronobat PE-75-EFB (75 Ah, 730 A), Kronobat PE-80-EFB (80 Ah, 800 A) | ## Kronobat PE-85-EFB vs PE-80-EFB and PE-72-EFB The real differences between the PE-85-EFB and the closest Kronobat models: | Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight | |---|---|---|---|---|---| | Kronobat PE-85-EFB (this one) | 85 Ah | 800 A | 306 × 173 × 225 | right | 26.4 kg | | Kronobat PE-80-EFB | 80 Ah | 800 A | 315 × 175 × 190 | right | 21.3 kg | | Kronobat PE-72-EFB | 72 Ah | 760 A | 261 × 175 × 220 | right | 20.7 kg | - Kronobat PE-80-EFB: 5 Ah less, the same cranking power, a different case (315 × 175 × 190 mm). - Kronobat PE-72-EFB: 13 Ah less, 40 A less cranking power, a different case (261 × 175 × 220 mm). ## Equivalents and alternatives to the Kronobat PE-85-EFB As the PE-85-EFB is an EFB, only EFB or AGM batteries of the same size and polarity are listed: you can step up to AGM, but not down to a conventional battery. | Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) | |---|---|---|---|---| | Varta N85 | EFB | 85 Ah | 800 A | 306 × 173 × 225 | ## Inside the PE-85-EFB: EFB technology Inside, the PE-85-EFB uses EFB technology, a reinforced version of the flooded battery. The PE-85-EFB works with normal chargers that have a lead-acid or EFB mode. ## Before ordering the PE-85-EFB, check this - The PE-85-EFB is an EFB: it suits cars that had an EFB or a conventional battery. If yours had an AGM, fit another AGM. - Cold cranking: 800 A (EN), equal to or higher than the original. - With 85 Ah, the PE-85-EFB replaces an original battery of that capacity or slightly less. - Polarity of the PE-85-EFB: positive terminal on the right (if yours has it on the other side, the cables will not reach). - The PE-85-EFB needs 306 × 173 × 225 mm of space (European case size D31): measure it with the hold-down clamp in place. ## Frequently asked questions about the Kronobat PE-85-EFB ### PE-85-EFB or PE-80-EFB: which one suits me? Compared with the PE-85-EFB, the Kronobat PE-80-EFB has 5 Ah less. With the same cranking power (800 A), the PE-85-EFB and the PE-80-EFB differ in capacity: the one with more Ah supports more load with the engine off. Mind the space: the PE-80-EFB measures 315 × 175 × 190 mm. ### Can the Kronobat PE-85-EFB be used in a car with Start-Stop? Yes, the PE-85-EFB is an EFB: it suits Start-Stop without brake energy recovery, or cars that already had an EFB. If your car left the factory with an AGM, fit another AGM. ### How much does the Kronobat PE-85-EFB weigh? 26.4 kg, with 85 Ah of capacity. For reference, the Kronobat PE-80-EFB (80 Ah) weighs 21.3 kg. ### Which battery is equivalent to the Kronobat PE-85-EFB? In EFB or AGM, with its dimensions and polarity: Varta N85. A conventional battery does not replace the PE-85-EFB. ### What case size is the Kronobat PE-85-EFB? Case size D31: 306 × 173 × 225 mm. The PE-85-EFB fits any standard D31 battery tray such as the Varta N85. ### Which side is the positive terminal on the Kronobat PE-85-EFB? On the PE-85-EFB, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach. ### Why does a Start-Stop battery cost more than a standard one? Because it uses reinforced plates and separators to withstand thousands of starts and partial discharges. A conventional battery in a Start-Stop car can fail in under a year. ## More batteries to compare with the PE-85-EFB - [All start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) - [The whole Kronobat range](https://bateriasonline.es/en/kronobat-batteries) - [Varta N85](https://bateriasonline.es/en/varta-n85) · 85 Ah, 800 A, 306×173×225 mm --- *bateriasonline.es — Batteries and accessories · 2026-11-10*