# VARTA Professional Li-Ion Deep Cycle Batteries

> VARTA Professional Deep Cycle LiFePO4 Lithium Batteries for marine, motorhome and solar. Thousands of cycles, 60% less weight and integrated BMS.

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- **Language**: en-GB

## Description

The Li-Ion Deep Cycle range is VARTA's lithium service battery. It does not start engines: its function is to power on-board consumption with deep daily discharges.

## Technology

Uses LiFePO4 chemistry, the most stable and safe lithium variant for leisure installations. Compared to an equivalent lead battery, it weighs around 60% less and takes up less space, allows thousands of cycles instead of hundreds, and enables almost the full nominal capacity to be used, while with lead it is advisable not to go below 50%. Integrates a BMS that protects against overloading, deep discharge, short circuit and out-of-range temperatures.

## Applications

- Service battery for recreational boats
- Motorhomes and campers with daily consumption
- Isolated solar installations
- Auxiliary equipment that discharge and recharge daily

## The range in figures

References 6
Capacity 50 – 200 Ah
Voltage 12.8 V
Technology Li-Ion

## How to choose

You need a lithium charger: a lead charger does not complete the charge well and may activate the BMS protection. Also check that the alternator or solar regulator are compatible before replacing a lead battery.

## Naming and equivalences

Professional Li-Ion Deep Cycle is a new range in the VARTA catalog, without equivalent in the previous nomenclature. It is a lithium LiFePO4 service bank and does not replace any starting battery.

## Frequently asked questions

### Can a VARTA lithium battery start the engine?

No. The Professional Li-Ion Deep Cycle range is designed as a service bank: it powers on-board consumption. Starting requires a specific battery.

### How much does it weigh compared to an equivalent lead battery?

About 60 % less, and occupies less space for the same usable energy.

### How many cycles can a LiFePO4 withstand?

Thousands, compared to the hundreds of a lead battery. In addition, it allows practically the full nominal capacity to be used, while with lead it is advisable not to go below 50 % to avoid shortening its life.

### Do I need to change the charger?

Yes, you need a lithium profile charger. A lead charger does not complete the charge well and can activate the integrated BMS protection.

### What does the BMS protect against?

It is the electronic management system integrated into the battery. It protects against overcharge, deep discharge, short circuit and temperatures outside the acceptable range.

## 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 · 2026-07-23*