# VARTA ProMotive EFB Batteries

> VARTA ProMotive EFB: reinforced electrolyte truck batteries for vehicles with electrical consumption with the engine stopped. High cycle resistance.

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## Description

ProMotive EFB is the industrial vehicle range prepared for electrical consumption with the engine stopped, the typical scenario of a cab-over truck.

## Technology

Applies reinforced electrolyte technology to the truck format: carbon additive, polyester separator and fixed plates to withstand vibration. Compared to a conventional SLI, it supports many more deep discharge cycles, which is exactly what happens when the driver spends the night in the cab with the refrigerator, the stationary heater or the television on.

## Applications

- Long-haul trucks with cab rest
- Vehicles with stationary heater or autonomous climate control
- Fleets with high consumption with the engine stopped
- Applications that combine starting and service

## The range in figures

References 3
Capacity 140 – 240 Ah
Cold cranking 800 – 1200 A (EN)
Voltage 12 V
Technology EFB

## How to choose

If the truck spends nights with on-board consumption, an EFB compensates the extra cost compared to a SLI because it can withstand many more discharges. For even higher consumption, consider the ProMotive AGM range.

## Naming and equivalences

ProMotive EFB keeps its name in the 2026 portfolio. Within the industrial vehicle family, it is positioned between ProMotive SLI, purely for starting, and ProMotive AGM, the one with maximum resistance.

## Frequently asked questions

### When is a ProMotive EFB more suitable than a SLI?

When the truck consumes electricity with the engine stopped: cabin rest, refrigerator, stationary heater or autonomous air conditioner. The EFB can withstand many more deep discharges than a conventional starting battery.

### What does reinforced electrolyte contribute to a truck?

The carbon additive and polyester separator allow repeating discharge cycles without the active material coming off, which is what degrades a starting battery subjected to consumption when stopped.

### Is it compatible with my vehicle's alternator?

Yes. An EFB charges with the same profile as a conventional lead battery, requiring no changes to the installation.

### What if the consumption when stopped is very high?

In that case, the appropriate option is ProMotive AGM, which allows deeper and more repeated discharges.

## VARTA ProMotive EFB: the truck battery for basic Start-Stop

The **ProMotive EFB** series brings EFB (Enhanced Flooded Battery) technology to commercial vehicles: reinforced plates and improved liquid electrolyte multiply charge-discharge cycles compared with a conventional starter battery. It is designed for trucks and buses with **basic Start-Stop** and moderate cab consumption, where a standard SLI ages prematurely.

### ProMotive EFB models

Code Ah CCA Application
K8 140 EFB 140 800 Mid rigid truck
K7 145 EFB 145 900 Heavy rigid truck
N9 200 EFB 200 1050 Standalone tractor
N9 225 EFB 225 1150 Heavy tractor unit

### When to choose a ProMotive EFB

- **Delivery trucks with Start-Stop** and frequent restarts in town.
- **Urban and intercity buses** stopping constantly on regular routes.
- **Tractor units** with moderate power draw during rest breaks: N9 200 and N9 225 EFB.
- Fleets needing more cycles than an SLI without paying for an AGM truck battery.

### Compatibility: find your truck EFB

On a commercial vehicle, the battery tray, height and terminal layout matter as much as the amps. Compare dimensions, capacity (Ah) and cold cranking amps (CCA) of every code in our [battery comparator](/gb/comparator) before you buy.

## VARTA ProMotive EFB frequently asked questions

### **What is the difference between an EFB and a conventional truck battery?**

An EFB adds reinforced plates and improved liquid electrolyte, so it accepts considerably more charge-discharge cycles and copes better with Start-Stop. On routes with frequent restarts it outlasts a standard truck battery.

### **Is the ProMotive EFB compatible with a Start-Stop truck?**

Yes, that is exactly its role: trucks and buses with **basic Start-Stop**. If there are long lay-ups or heavy engine-off consumption (fridge, tachograph, GPS), step up to the VARTA ProMotive AGM.

### **What capacities does the ProMotive EFB range cover?**

From 110 to 225 Ah with 800 to 1150 A cold cranking (CCA): from the K8 140 EFB for mid rigid trucks up to the N9 225 EFB for heavy tractor units.

Catalogue curated by our technical team. **11,093 Trustpilot reviews · 4.5/5**. 24h mainland delivery, free 14-day returns.

## Products in this category

| Product | Brand | Price |
|---|---|---|
| [Truck battery Varta B90 12V 190Ah 1050A EFB](https://baterias.com/gb/battery-varta-b90-efb-12v-190ah-1050a) | VARTA | 208,96 € |
| [Truck battery Varta C40 12V 240Ah 1200A EFB](https://baterias.com/gb/battery-varta-c40-efb-12v-240ah-1200a) | VARTA | 266,98 € |

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-08-13*