Varta

The Ultralife UHE-ER14250-H is a compact primary lithium battery in the 1/2 AA format (half AA size). It belongs to the "High Energy" series and uses bobbin technology for maximum energy density in the smallest space. With a voltage of 3.6 V and a capacity of 1.2 Ah, it is the global standard for memory backup on computer motherboards and in industrial control systems. It offers an extremely long service life and high reliability at low discharge currents. Highlights at a glanceCompact 1/2 AA format: At just 25 mm high, it is exactly half the length of a standard AA battery, with the same diameter (14.5 mm).High energy density: Despite its small size, it delivers a capacity of 1.2 Ah, which is sufficient for years of operation in backup applications.Bobbin technology: The internal design is optimised for low self-discharge (< 2 % per year), ideal for devices that are permanently connected to the mains and only require backup in the event of a power cut.Constant 3.6V voltage: Provides a stable voltage level that is significantly higher than that of alkaline (1.5V) or lithium-manganese batteries (3.0V).Extreme temperature range: Operates reliably between -55 °C and +85 °C, making it suitable for use in outdoor sensors or heated control cabinets.Long service life: Designed for a service life of up to 10 years in low-power applications.The standard for motherboards & dive computersThe UHE-ER14250-H (often also referred to as LS14250 by Saft or SL-750 by Tadiran) is the classic "BIOS battery" for industrial computer motherboards, older Apple Macintosh models (G3/G4/G5) and PLC controls (Siemens S5/S7 backup). In addition, this format is frequently used in professional dive computers, dog collars (for tracking) and alarm system sensors used. Features ModelUltralife UHE-ER14250-H (High Energy 1/2 AA) ApplicationCMOS backup (Mac/PC), dive computers, sensors TechnologyLithium-thionyl chloride (Li-SOCl2) - Bobbin Construction Voltage3.6 V Capacity1.2 Ah (Nominal) - High energy density Max. discharge currentapprox. 40-50 mA (continuous) - Only for low loads Dimensions (L x W x H in mm)14.5 x 25.2 (size 1/2 AA) ConnectionStandard, PCB pins or solder tabs Temperature range-55°C to +85°C Special featuresExtremely long-lasting (>10 years), standard for memory backup Weight (g)approx. 10  FAQs about the Ultralife UHE-ER14250-HWhat does "1/2 AA" mean?Half length: The designation refers purely to the mechanical size. The battery has the same diameter as a standard AA battery (14.5 mm), but is only half as long (approx. 25 mm). It therefore does not fit in normal AA compartments.Can I replace it with a CR14250?Be careful with the voltage: A CR14250 (lithium-manganese) usually has 3.0 volts. The ER14250 (like this Ultralife) has 3.6 volts. In many cases (e.g. dive computers) the difference is tolerable, but some sensitive electronics absolutely require the correct voltage. Check your device manual.Is the battery rechargeable?No. This is a primary battery. Never attempt to recharge it. If you are looking for a rechargeable battery in this size, you will usually need a LiFePO4 battery (3.2V) or Li-Ion (3.7V) in size 14250, but these require a special charger.Is the battery available with solder tags?Yes. As these batteries are often permanently installed on circuit boards (e.g. in industrial control systems), they are often available with different connection types:Standard: Flat terminals for insertion into holders.Axial: One wire comes out at the top and one at the bottom (for horizontal mounting).PCB/Tags: 2 or 3 pins on the underside for direct soldering. When purchasing, pay close attention to the required connection type.

The VARTA CRAA is a high-performance 3-volt lithium primary battery in AA size, developed for professional and industrial applications with the highest requirements for longevity and reliability. Based on lithium-manganese dioxide technology (Li-MnO2), it offers high energy density, extremely low self-discharge, and a very wide operating temperature range. As a loose cell ("bulk"), it is the ideal energy source for the initial equipment (OEM) of durable and low-maintenance electronic devices.Highlights at a glanceExtreme longevity: Up to 10 years storage life thanks to extremely low self-discharge.High capacity: Provides a very high energy reserve for long-lasting autonomy in the AA format.Wide temperature range: Reliable performance under extreme conditions from -40 °C to +85 °C.High energy density: Maximum energy for demanding applications with long runtime requirements.Industrial top quality: Developed and manufactured for demanding OEM applications and safety-related electronics.Reliable energy for long-term applicationsThe VARTA CRAA is the preferred energy source for "fit and forget" applications where a battery change is not intended for years. Its main area of use is powering smart meters (smart metering for water, gas, electricity), industrial controllers (PLC), safety sensors, alarm systems, and the buffering of memory components (SRAM/CMOS backup) in professional electronics.Superior lithium manganese dioxide technologyLithium manganese dioxide technology (Li-MnO2) is the key to the outstanding performance of this cell. It allows a high nominal voltage of 3 volts and an extremely low self-discharge of less than 1% per year at room temperature. This guarantees maximum readiness for operation even after many years of storage. The technology is also known for its high safety and reliability in industrial environments.Developed for industrial integrationAs a highly specialised individual cell, the CRAA is optimised for industrial processing and assembly into battery solutions. Its robust construction and high quality ensure process-safe integration into end devices. With this cell, VARTA offers developers and manufacturers a reliable and powerful platform for the development of durable and low-maintenance products. Features                                                                                                                                                        Model              VARTA Lithium round cell CRAA               Battery type              Lithium-manganese dioxide (Li-MnO2)               Nominal voltage (V)              3.0               Capacity (mAh)              2000               Diameter (mm)              14.75               Height (mm)              50.5               Weight (g)              21.5        FAQs about the VARTA Lithium Battery CRAAWhat is the main advantage of this lithium battery?The key advantage is the extremely long service and storage life of up to 10 years, combined with a very wide operating temperature range. It provides reliable energy for many years and is therefore ideal for maintenance-free devices where the battery is permanently installed.Is this battery rechargeable?No. This is a lithium primary battery. It must not be recharged under any circumstances. Attempts to charge are extremely dangerous and can lead to fire or explosion.What is the difference to a normal 1.5V AA battery (alkaline or lithium)?The main difference is the voltage. This CRAA cell has a nominal voltage of 3 volts, whereas standard AA batteries have 1.5 volts. It is therefore not suitable as a direct replacement for 1.5V batteries and may only be used in devices that are explicitly designed for the 3-volt lithium type CRAA.How should this battery be disposed of?Batteries must not be disposed of in household waste. As an industrial battery, it is subject to the provisions of the Battery Act. Please take the empty battery to the designated industrial or municipal collection points to ensure proper and environmentally friendly disposal.

The Tadiran SL-760PR is a primary high-performance lithium thionyl chloride battery in the widely used size AA (Mignon). As part of the proven SL-700 series, it is optimised for maximum reliability and an extremely long service life with minimum self-discharge. This version is pre-configured with radial pins (+/- 1 pin) for the direct and secure mounting on PCBs. With a nominal voltage of 3.6 V and a high capacity of 2.2 Ah, it is the ideal energy solution for professional "fit and forget" applications.Highlights at a glanceMaximum longevity: Extremely low self-discharge of less than 1% per year.For PCB mounting: Pre-configured with radial pins (+/- 1 pin) for direct installation.High capacity: 2.2 Ah in standardised AA (Mignon) format.High rated voltage: Stable voltage of 3.6 V throughout almost the entire service life.Wide temperature range: Reliable operation from -55°C to +85°C.Powerful in a wide range of applicationsThe Tadiran SL-760PR was specifically developed for long-term applications with low continuous current, in which the battery is permanently integrated into the electronics. The radial pins enable a specific and space-saving arrangement on the PCB. Its primary areas of application include memory backups (RTC, CMOS) in industrial control systems (PLC), metering technology (metering for water, gas, electricity) as well as long-life security technology and alarm systems in the common AA format.Designed for maximum safety and efficiencyThe safety and longevity of the SL-760PR are based on the proven Tadiran design. The cell has a hermetic glass-to-metal seal that reliably prevents the electrolyte from leaking. The inorganic electrolyte used is non-flammable and ensures a high degree of intrinsic safety. Each cell is designed to deliver its energy constantly and safely over a very long period of time, reducing maintenance costs and the total operating costs of your application.Superior lithium thionyl chloride technologyThe lithium thionyl chloride technology (Li-SOCl₂) of the SL-700 series is the gold standard for long-term applications with low current requirements. A characteristic feature is the passivation effect: a thin protective layer forms on the lithium anode, which reduces the self-discharge to an absolute minimum, enabling extremely long storage and operational capability. This ensures that energy is reliably available even after many years. Features  ModelTadiran SL-760/PR TechnologyLithium thionyl chloride (Li-SOCl₂) SizeAA (Mignon) Rated voltage (V)3.6 Capacity (mAh)2200 Max. continuous discharge current100 mA Self-dischargeapprox. 1% per year Operating temperature (°C)-55 ~ +85 Dimensions (Ø x L, mm)approx. 14.7 x 50.5 Weight (g)approx. 18 ConnectionRadial pins (PR) RechargeableNo  FAQs about this Tadiran batteryWhat does the connection with "radial pins" mean?In contrast to axial connections, which exit from the centre of the terminals, radial pins are arranged so that they exit from one face of the battery. This configuration is optimised for specific layouts on printed circuit boards (PCBs) and enables particularly stable and defined mounting of the cell.What is the advantage of the SL-700 series over other series?The SL-700 series is optimised for the absolute lowest self-discharge. It is the best choice for applications that require very little power over many years, such as memory backup in computers. In contrast, other series (such as the SL-300 iXtra) are designed for applications with higher pulse current demand.For which devices is this battery type suitable?This battery type is ideal for professional electronics in which the battery is permanently soldered and an extremely long service life is decisive. Typical applications are meters, industrial computers, alarm systems and long-life sensors with specific PCB layouts.Is this battery rechargeable?No, this is a primary lithium battery and must not be recharged under any circumstances. Attempting to charge the cell is dangerous and can lead to overheating, leakage or rupture of the cell.What does the passivation effect mean for this battery?After longer storage, a protective layer forms on the lithium surface. This layer is the reason for the extremely low self-discharge. On first use, it can lead to a short voltage delay. This should be considered in circuit design for applications that require current immediately after activation.