Ultralife

The Tadiran SL-860S is a primary high-performance lithium thionyl chloride battery in the widely used AA (Mignon) form factor. It was designed for professional applications requiring very high capacity and long service life. With a nominal voltage of 3.6 V and a very high capacity of 2.4 Ah, it is a reliable energy solution for long-life electronic devices. This model is the standard design for use in battery holders.Highlights at a glanceVery high capacity: 2.4 Ah for maximised extended and autonomous operating time.Standardised design: Common AA (Mignon) size for broad compatibility.High nominal voltage: Stable voltage of 3.6 V throughout almost the entire service life.Maximum reliability: Proven long-term stability and low self-discharge.Wide temperature range: Reliable operation from -55 °C to +85 °C.Powerful in diverse applicationsThe Tadiran SL-860S is the perfect choice for replacing conventional batteries in devices where frequent battery replacement is undesirable or costly. It is excellent for professional initial equipment in metering technology (water, gas, electricity), for memory backups (RTC, CMOS) in computers and controls, as well as in alarm systems, security systems and industrial sensors that rely on AA battery holders.Engineered for maximum safety and efficiencyThe safety and durability of the SL-860S are based on the proven Tadiran design. The cell features a hermetic glass-to-metal seal that reliably prevents electrolyte leakage. The inorganic electrolyte used is non-flammable and provides a high level of intrinsic safety. Each cell is designed to deliver its energy consistently and safely over a very long period, which minimises maintenance costs and reduces the overall operating costs of your application.Superior lithium thionyl chloride technologyLithium thionyl chloride technology (Li-SOCl₂) is the gold standard for long-term applications with low current drain. A characteristic feature is the passivation effect: A thin protective layer forms on the lithium anode, which reduces self-discharge to an absolute minimum and thus enables extremely long shelf and operating life. This ensures that the energy is still reliably available even after many years. Characteristics  ModelTadiran SL-860/S TechnologyLithium thionyl chloride (high current) SizeAA (Mignon) Nominal voltage (V)3.6 Capacity (mAh)2400 Max. continuous discharge current1000 mA Max. pulse current2000 mA Self-dischargeapprox. 2% per year Operating temperature (°C)-55 ~ +85 Dimensions (Ø x L, mm)approx. 14.7 x 50.5 Weight (g)approx. 20 ConnectionStandard (industrial head) RechargeableNo  FAQs about this Tadiran batteryDoes this model have solder tabs or wires?No, the SL-860S model is the standard version with regular battery contacts and intended for use in a suitable AA battery holder. For direct installation, Tadiran also offers variants of this cell type with different solder tabs.For which applications is this battery type suitable?This type of battery is ideal for professional electronics that require extremely long service life and use AA batteries. Typical applications are meters, industrial computers, alarm systems and long-life sensors.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 may result in overheating, leakage or bursting of the cell.What does the passivation effect mean for this battery?After prolonged storage, a protective layer forms on the lithium surface. This layer is the reason for the extremely low self-discharge. When the battery is first put under load, especially at higher currents, it can lead to a brief voltage delay. This should be taken into account in the application’s circuit design.How long is the battery shelf life and how should it be stored?The battery has a shelf life of over 10 years. For maximum shelf life, we recommend storage in a cool and dry place with low humidity.

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 worldwide standard for memory backup on computer mainboards and in industrial control systems. It features an extremely long service life and high reliability with low discharge currents. Highlights at a glanceCompact 1/2 AA format: At just 25 mm high, it is exactly half as long as a standard AA battery with the same diameter (14.5 mm).High energy density: Despite its small size, it delivers 1.2 Ah capacity, enough for years of operation in backup applications.Bobbin technology: The internal construction is optimised for low self-discharge (< 2 % per year), making it ideal for devices that are always connected to the mains and only need backup in case of power failure.Constant 3.6V voltage: Delivers a stable voltage, which is much higher than alkaline (1.5V) or lithium-manganese batteries (3.0V).Extreme temperature range: Operates safely between -55 °C and +85 °C, qualifying it for use in outdoor sensors or heated switch cabinets.Long service life: Designed for up to 10 years of service in low-power applications.The standard for mainboards & dive computersThe UHE-ER14250-H (often also called LS14250 by Saft or SL-750 by Tadiran) is the classic “BIOS battery” for industrial computer mainboards, older Apple Macintosh models (G3/G4/G5) and PLC control systems (Siemens S5/S7 backup). This format is also frequently used in professional dive computers, dog collars (for location purposes) and alarm system sensors are 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, pins (PCB) or solder tags Temperature range-55°C to +85°C Special featuresExtremely long-lasting (>10 years), standard for memory backup Weight (g)approx. 10 FAQs for 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 an ordinary AA battery (14.5 mm), but is only half as long (approx. 25 mm). It therefore does not fit into 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 acceptable, but some sensitive electronics absolutely require the correct voltage. Check the manual of your device.Is the battery rechargeable?No. This is a primary battery. Never attempt to recharge it. If you are looking for a rechargeable in this size, you usually need a LiFePO4 battery (3.2 V) or Li-Ion (3.7 V) in size 14250, which require a special charger.Is the battery available with solder tags?Yes. As these batteries are often permanently mounted on circuit boards (e.g. in industrial controls), they are often available with different connection types:Standard: Flat terminals for placement in holders.Axial: One wire comes out at the top and one at the bottom (for horizontal installation).Print/Tags: 2 or 3 pins on the underside for direct soldering. Make sure you choose the connection type you need when purchasing.

The Ultralife UHR-ER14505-H is an industrial high-performance primary battery in the widely used AA format (Mignon). Unlike standard lithium cells (bobbin type), which are optimised for low currents, this model utilises the spiral cell technology (wound electrodes). This makes it a small powerhouse that can continuously deliver high currents and strong pulses without collapse. It is the ideal power source for compact devices that need to transmit (GSM/LoRaWAN) or drive motors.Highlights at a glanceSpiral cell technology: The wound arrangement of the electrodes (similar to a roll) maximises the surface area, enabling extremely high discharge currents (up to 1000 mA continuous).Maximum pulse performance: Delivers short current pulses of up to 2000 mA, which is essential for modern radio modules in smart home or tracking devices.Standard AA format: Measuring 14.5 x 50.5 mm, it is mechanically equivalent to a normal AA battery, but delivers 3.6 volts.High safety: Features a hermetically sealed housing, a safety valve and often an integrated PTC resistor to protect against short circuit.Extreme temperature range: Can be used from freezing -55°C up to hot +85°C, ideal for outdoor sensors.Long shelf life: The self-discharge is extremely low (< 2% per year), so the battery remains storable for over 10 years.The powerhouse for IoT & sensorsWhile normal lithium AA cells (such as Saft LS14500) quickly reach their limits at high currents, this is where the UHR-ER14505-H excels. It is the perfect choice for intelligent gas and water meters (Smart Metering), GPS trackers, wireless security sensors (PIR), medical hand tools and professional torches that require 3.6V lithium cells. Features ModelUltralife UHR-ER14505-H (High Rate Spiral) ApplicationIoT, wireless sensors, smart metering (high pulse currents) TechnologyLithium thionyl chloride (Li-SOCl2) - Spiral cell design Voltage3.6 V Capacity2.0 Ah (nominal) - optimised for performance Max. discharge currentapprox. 1000 mA (pulse) / 500 mA (continuous) Dimensions (L x W x H in mm)14.5 x 50.5 (AA / Mignon size) ConnectionStandard (positive pole nipple-shaped) or solder tags Temperature range-55°C to +85°C Special featuresSpiral design for high performance, long shelf life (>10 years) Weight (g)approx. 19  FAQs about Ultralife UHR-ER14505-HWhat is the difference compared to the "normal" ER14505 (Bobbin)?The difference is huge in terms of power output.Bobbin type (e.g. Saft LS14500): Often has more capacity (approx. 2.6 Ah), but can only deliver very little current (a few mA). Ideal for memory retention.Spiral type (UHR-ER14505-H): Has slightly less capacity (approx. 2.0 Ah), but can deliver 20 times the current. If your device uses GSM, LTE or Wi-Fi, you absolutely need the spiral version (UHR), because the bobbin cell would collapse during data transmission.Can I use this battery instead of a normal AA battery?Absolutely not! A normal AA battery (alkaline) has 1.5 volts. This lithium battery has 3.6 volts. If you put this battery in a remote control, a clock or an ordinary toy, the electronics will be destroyed immediately due to the overvoltage. Use it only in devices that are explicitly designed for "3.6V Lithium AA".Is the battery rechargeable?No. It is a primary battery (single use). Never recharge it (risk of explosion). For rechargeable lithium batteries in AA size you need to look for "Li-Ion 14500" (3.7V), but this is a different technology.Do I need a safety margin when soldering?If you buy the version with solder tags: never solder directly to the battery can, only to the tags and as quickly as possible (max. 5 seconds). Excessive heat can damage the internal seals or separator and cause leakage.

The Ultralife UHE-ER14505-H is a primary lithium battery optimized for capacity in the widely used AA format (Mignon). It belongs to the "High Energy" series and, unlike the previously discussed UHR series, uses the Bobbin technology (bobbin construction). This means it is not designed for high currents, but for maximum energy density and extremely long running times. It is the ideal "long-term battery" for devices that need to be supplied with low currents for years without requiring a battery change. Highlights at a glanceMaximum capacity in AA format: Offers with 2.4 Ah a significantly higher energy quantity than the high-current variant (UHR, approx. 2.0 Ah) or conventional alkaline batteries, ideal for extremely long operating times.Bobbin technology: The internal design minimises self-discharge and maximises the amount of active lithium, perfect for applications with low discharge currents (a few milliamperes or microamperes).10+ year lifetime: Thanks to the extremely low self-discharge (< 2 % per year), this battery can supply devices for a whole decade before it needs to be replaced.Constant voltage: The voltage of 3.6 V remains stable over almost the entire discharge cycle (flat discharge curve), which makes electronics development easier.Extreme temperature range: Can be used from -55 °C to +85 °C, making it the standard choice for outdoor sensors.High safety: The hermetically sealed stainless steel housing and the stable chemistry (Li-SOCl2) ensure safety even under harsh conditions.The standard for smart home & sensorsThe UHE-ER14505-H is the standard battery for wireless sensors (e.g. window contacts, temperature sensors), heat cost allocators, smoke detectors (10-year models) and memory backup (CMOS/RAM) in computers and industrial controllers. Wherever a device hangs on the wall or is installed for years and only rarely "wakes up", this battery is the right choice. Features ModelUltralife UHE-ER14505-H (High Energy Bobbin) ApplicationLong-term backup, thermostats, smoke detectors (low current) TechnologyLithium-thionyl chloride (Li-SOCl2) - bobbin construction Voltage3.6 V Capacity2.4 Ah (nominal) - high energy density Max. discharge currentapprox. 100 mA (continuous) - optimized for microamp range Dimensions (L x W x H in mm)14.5 x 50.5 (AA / Mignon size) ConnectionStandard (positive terminal nipple-shaped) or soldering tags Temperature range-55°C to +85°C Special featuresBobbin design, extremely low self-discharge (<1%/year), >10 years durable Weight (g)approx. 18 FAQs for Ultralife UHE-ER14505-HWhat is the key difference to the UHR-ER14505?This determines whether your device works or fails:UHE (your battery): "Energy" (bobbin). High capacity (2.4 Ah), but low current. Ideal for sensors that only measure data or retain memory.UHR (Spiral): "Power" (spiral). Less capacity (2.0 Ah), but high current. Necessary for GSM/LTE modules or motors. If you insert the UHE into a GPS tracker with GSM modem, the voltage will collapse while sending.Can I use it as a replacement for normal AA batteries?Warning: No! Normal AA batteries have 1.5 volts. This battery has 3.6 volts. That's more than double! If you put this in a remote control, a wall clock or a toy, you'll destroy the device immediately. It may fit mechanically, but it is not electrically compatible.What is passivation?When these batteries are stored for a long time, a protective layer forms inside (passivation). This is good for durability (no self-discharge), but when you put the battery into operation, the voltage may be low for a few milliseconds before it jumps to 3.6 V. Some sensitive devices then incorrectly display "battery low".Is the battery rechargeable?No. It is a primary battery. Rechargeable lithium batteries in AA size usually have 3.7 V (Li-Ion 14500) or 1.2 V (NiMH) and a completely different chemistry. This cell must not be charged.

The Ultralife UHE-ER26500-H is a high-capacity primary lithium battery in the size C (Baby). It belongs to the "High Energy" series and is based on the Bobbin technology (coil construction). This construction is uncompromisingly designed for maximum energy density and extremely long runtimes. With a capacity of 8.8 Ah, it offers almost the energy of a large D-cell in a more compact C-case. It is the perfect solution for applications that need to be self-sufficiently supplied with low currents for years. Highlights at a glanceHigh energy density: Makes optimum use of the housing volume of the C-cell (Baby) and, with 8.8 Ah, provides enormous capacity for long-term applications.Bobbin technology: The internal structure is optimised for low discharge currents, minimising self-discharge and maximising service life.Long shelf life: Thanks to the stable lithium thionyl chloride chemistry (Li-SOCl2), the battery loses less than 2% charge per year and can be stored for over 10 years.Constant voltage: The discharge curve is extremely flat; the nominal voltage of 3.6 V remains stable over almost the entire service life, simplifying the electronics design.Extreme temperature range: Works reliably from arctic -55 °C to hot +85 °C.Industry standard: Hermetically sealed stainless steel housing and laser welding guarantee protection against leaks in sensitive devices.The endurance runner for meters & sensorsThe UHE-ER26500-H is ideal for devices that are to be "installed and forgotten". It is widely used in professional metering equipment (Smart Metering for gas/water), industrial data loggers, alarm system sensors and for memory backup in industrial control systems. Where changing a battery would be expensive or complex, this cell shows its strengths. Features ModelUltralife UHE-ER26500-H (High Energy Bobbin) ApplicationLong-term supply, smart metering, data logger (low current) TechnologyLithium thionyl chloride (Li-SOCl2) - Bobbin Construction Voltage3.6 V Capacity8.8 Ah (Nominal) - High energy density Max. Discharge currentapprox. 150 mA (continuous) - Optimised for long runtimes Dimensions (L x W x H in mm)26.2 x 50.0 (size C / Baby) ConnectionStandard (positive terminal nipple-shaped) or solder lugs Temperature range-55°C to +85°C Special featuresBobbin design, extremely low self-discharge (<1%/year), >10 years shelf life Weight (g)approx. 53 FAQs for Ultralife UHE-ER26500-HWhat is the difference to the UHR-ER26500?The difference lies in the performance curve (energy vs. power).UHE (your battery): "High Energy" (Bobbin). Maximum capacity (8.8 Ah), but only suitable for low currents.UHR (Spiral): "High Rate" (Spiral). Slightly less capacity (approx. 6-7 Ah), but suitable for high currents (e.g. radio transmission, motors). If your device only measures and stores, use the UHE. If it transmits or works mechanically, check whether the current demand will overload the UHE.Can I use this battery instead of a normal C-cell (Baby)?Warning: No! A normal C-cell battery (alkaline) has 1.5 Volts. This industrial battery has 3.6 Volts. If you insert this battery into a toy, standard torch or radio, the device will be damaged by overvoltage. It is designed exclusively for specialised industrial equipment.Why do I measure less voltage on a new battery?This is the passivation effect. Lithium thionyl chloride batteries form an internal protective layer during storage, preventing self-discharge. When measuring voltage with a high-impedance multimeter, it may initially read low or drop immediately under load. The battery must be "depassivated" (short-term load) for full voltage to be available.Is the battery rechargeable?No, it is a primary battery. Recharging may cause gas formation, leakage or explosion.

The Ultralife UHE-ER34615-H is a size D (mono) primary lithium battery optimised for maximum capacity. It belongs to the "High Energy" series (UHE) and uses the proven Bobbin technology (coil body construction). In contrast to the UHR series (spiral), which is built for high currents, the focus here is on an extremely high energy density. With an incredible 19 Ah capacity, it is a "long-distance runner", developed for applications that need to be supplied with low currents for 10 years or longer. Highlights at a glanceMaximum energy density: Thanks to the bobbin structure, it offers 19 Ah significantly more capacity than the high-current variant (14.5 Ah) and is therefore the leader in the D-size.Bobbin technology: The internal structure minimises inactive parts and maximises the amount of lithium, ideal for low discharge currents over very long periods.Extremely low self-discharge: Loses less than 2 % charge per year in storage (at 23°C), enabling operating times of up to 10-15 years.Wide temperature range: Reliable operation under extreme conditions from -55°C to +85°C.High voltage: Maintains the nominal voltage of 3.6 V almost constantly throughout the entire discharge period.Safety: Hermetically sealed stainless steel case and flame-retardant electrolyte ensure maximum safety in sensitive applications.The standard for smart metering & backupThe UHE-ER34615-H is the classic battery for applications that need to run "forever" without maintenance. It is the standard in the consumption meter industry (gas, water, heat meters), in CMOS memory backup systems, smoke detectors, toll systems and tracking devices with low transmission demand. It is perfectly suited to keep electronics in "sleep mode" alive for years. Features ModelUltralife UHE-ER34615-H (High Energy Bobbin) ApplicationLong-term supply, memory backup, sensors (low current) TechnologyLithium thionyl chloride (Li-SOCl2) - Bobbin Construction Voltage3.6 V Capacity19 Ah (Nominal) - Maximum energy density Max. discharge currentapprox. 200 mA (continuous) - Optimised for low currents Dimensions (L x W x H in mm)34.2 x 61.5 (size D / mono) ConnectionStandard (positive terminal nipple-shaped) or solder tags Temperature range-55°C to +85°C Special featuresBobbin construction, extremely low self-discharge (<1%/year), >10 years shelf life Weight (g)approx. 100  FAQs for Ultralife UHE-ER34615-HWhat is the difference to the UHR-ER34615 (Spiral)?This is the most important difference for your application!UHE (your battery): "High Energy" (Bobbin). Maximum capacity (19 Ah), but low current (max. 200 mA). Like a marathon runner.UHR (Spiral): "High Rate" (Spiral). Less capacity (14.5 Ah), but plenty of current (2000 mA). Like a sprinter. Do not use the UHE not for motors, pumps or GSM modules with frequent transmission – the voltage would drop (passivation effect).Why does the voltage drop at the beginning?Lithium thionyl chloride batteries (especially bobbin types like this) form a protective layer on the anode (passivation) during storage. This prevents self-discharge, but temporarily increases internal resistance. On first use, the voltage may briefly drop until the layer is "broken through" by the current flow.Can I use this battery instead of a normal mono battery (type D)?No, definitely not! Normal mono batteries (alkaline) have 1.5 volts. This industrial battery has 3.6 volts. If you insert this battery into a torch, radio or toy, the electronics will be instantly destroyed by the more than double voltage.Is the battery rechargeable?No. This is a non-rechargeable primary battery. Never charge it, never throw it into a fire, and do not open it by force. Please dispose of it only via official collection points for lithium batteries.

The Ultralife UHR-ER34615-H is an extremely powerful primary lithium battery (lithium thionyl chloride / Li-SOCl2) in the standard size D (mono). In contrast to conventional "energy" cells (bobbin type), this model features a spiral construction (spiral cell). This special construction enormously increases the internal surface area of the electrodes, enabling the battery to deliver very high continuous currents and strong pulses. It is therefore the first choice for applications requiring short, high power peaks, such as radio transmitters, military equipment, or motor-operated valves.Highlights at a glanceSpiral Cell Technology: The wound electrode structure enables extremely high discharge currents (up to 2000 mA continuous), where standard lithium cells often fail at just a few mA.High capacity: Despite its performance-centric construction, it offers an impressive capacity of 14.5 Ah for long runtimes.Enormous pulse power: Delivers pulse currents up to 3000 mA (occasionally 4000 mA), ideal for GSM modules, alarm sirens, or pump motors.Extreme temperature range: Operates reliably from arctic -55 °C to hot +85 °C.Long shelf life: Thanks to the low self-discharge (< 2 % per year), the battery can be stored for 10 years and longer.Safety features: Equipped with a PTC (thermistor) for current limitation in short circuit conditions, as well as a safety valve and hermetic glass-to-metal seal.The power station for industry & militaryWhereas standard lithium D cells (bobbin type) are often only intended for memory backup or extremely low currents, the UHR-ER34615-H is a real workhorse. It is often used in GPS tracking systems, oceanographic buoys, military radios, smart meters with remote transmission, and medical devices (e.g. defibrillators, infusion pumps). It combines the longevity of lithium with the power of a high-current battery. Features ModelUltralife UHR-ER34615-H (High Rate Spiral) ApplicationHigh currents (smart metering, GPS tracking, wireless technology) TechnologyLithium-thionyl chloride (Li-SOCl2) - spiral cell design Voltage3.6 V Capacity14.5 Ah (nominal) Max. discharge currentapprox. 3.0 A (continuous) / 4.0 A (pulse) - high rate Dimensions (L x W x H in mm)34.2 x 61.5 (size D / mono) ConnectionStandard (positive pole nipple-shaped) or solder tags Temperature range-55°C to +85°C Special featuresSpiral construction for high performance, long shelf life (>10 years) Weight (g)approx. 105 FAQs for Ultralife UHR-ER34615-HWhat is the difference to the UHE-ER34615?This is the crucial difference!UHE-ER34615 (Energy / Bobbin): Has more capacity (19 Ah), but delivers only very little current (max. approx. 100-200 mA). Ideal for long-term applications with minimal consumption.UHR-ER34615 (Power / Spiral): Has slightly less capacity (14.5 Ah), but delivers an extremely high current (max. 2000-3000 mA). If your device moves motors or transmits (GSM/LTE), you absolutely need the UHR version (spiral). The UHE version would immediately collapse in voltage.Is this battery rechargeable?No. This is a primary lithium battery. Never attempt to charge this battery. There is an explosion hazard. Because of the high energy density, it should also not be forcibly opened or burned.Do I need a protection resistor?The battery already includes an internal PTC (Positive Temperature Coefficient), which acts as a reversible fuse. In the event of an external short circuit, the PTC increases its resistance and limits the current to prevent overheating. Nevertheless, appropriate fusing should be included in the circuit, since the battery can release very large amounts of energy.Why does it have 3.6V and not 1.5V?This is a lithium industrial battery, not a normal alkaline battery. It has a nominal voltage of 3.6 volts (instead of 1.5 V). It must never under any circumstances be inserted into regular devices (such as torches or radios) that are designed for 1.5V batteries, as the double voltage would immediately destroy the electronics.