Varta Lithium round cell CRAA 3V 2Ah with 3 soldering pins

The VARTA CRAA with 3 solder pins (+2 Pin / -1 Pin) is a high-performance, industrially pre-assembled 3-volt lithium primary battery in AA size. It has been developed for professional applications requiring an extremely long-lasting and reliable power source with a reverse-polarity safe connection for PCB mounting. Based on lithium manganese dioxide technology (Li-MnO2), it offers a high capacity of 2Ah, extremely low self-discharge and is the ideal power source for the initial equipment (OEM) of long-lasting and low-maintenance electronic devices.

Highlights at a glance

• Reverse-polarity-safe assembly: Equipped with 3 solder pins (+2 Pin / -1 Pin) for error-free and safe PCB mounting.
• Extreme durability: Up to 10 years storage capability due to extremely low self-discharge.
• High capacity: With 2 Ah, provides a very high energy reserve for long-lasting autonomy.
• Wide temperature range: Reliable performance under extreme conditions from -40°C to +85°C.
• High 3V voltage: Ideal for modern electronic circuits in AA size.

Reliable energy for long-term applications

The pre-assembled VARTA CRAA is the preferred power source for "fit and forget" applications where the battery is permanently soldered onto a printed circuit board. Its main application is the power supply for smart meters (smart metering for water, gas, electricity), industrial control systems (PLC), safety sensors, alarm systems, and the backup of memory modules (SRAM/CMOS backup) in professional electronics.

Superior lithium manganese dioxide technology

Lithium manganese dioxide technology (Li-MnO2) is the key to the exceptional performance of this cell. It enables a high nominal voltage of 3 volts in the common AA size and an extremely low self-discharge of less than 1% per year at room temperature. This guarantees maximum readiness for use even after many years in storage. The technology is also known for its high safety and reliability in industrial environments.

Developed for industrial integration

As an industrially pre-assembled cell, the CRAA with 3 solder pins is optimised for efficient and process-reliable mechanical or manual assembly of PCBs. The asymmetric pin arrangement prevents assembly errors and ensures a permanently secure and vibration-resistant solder joint. With this cell, VARTA offers developers and manufacturers a reliable and easy-to-integrate platform for the development of long-life and low-maintenance products.
 

Characteristics

FAQs for the VARTA lithium battery CRAA with 3 solder pins

What does the information "SLF +2Pin / -1Pin" mean?

"SLF" usually stands for "Solder Pin". The indication "+2Pin / -1Pin" describes the specific, asymmetrical arrangement of the solder pins: the positive terminal is fitted with two pins and the negative terminal with one pin. This serves as a mechanical reverse-polarity protection when mounting on the PCB and increases process reliability in manufacturing.

Is this battery rechargeable?

No. This is a lithium primary battery. It must not under any circumstances be recharged. Attempts to charge it are extremely dangerous and can lead to fire or explosion.

Can I use this battery as a replacement for a standard 1.5V AA battery?

No, absolutely not. This CRAA cell has a nominal voltage of 3 volts, whereas standard AA batteries (alkaline, lithium, NiMH) have 1.5 volts. It may only be used in devices that are explicitly designed for the 3-volt lithium CRAA type, as the higher voltage would destroy other devices.

How should this battery be disposed of?

Batteries must not be disposed of with household waste. As an industrial battery, it is subject to the regulations of the Battery Act. Please take the empty battery to the designated industrial or municipal collection points to ensure proper and environmentally friendly disposal.