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We've been shipping these ER18505M cells for a while now, and they're a solid fit for metering and tracking gear that sits in harsh conditions, like oil well monitors or remote sensors where swapping batteries isn't practical. The Li-SOCl2 chemistry gives you that flat 3.6V discharge curve, which basically means your device sees consistent power until it's dead, and the 3500mAh capacity holds up well even with the 500mA continuous draw limit.
Operating range from -55°C to +85°C is what you'd expect from this chemistry, but the real trick is storage—keep them at -20°C to +60°C or so, ideally around 20°C, and you'll get full 10-year shelf life. We've had batches sit for 8 years and still test above 90% capacity on HPLC, though pulse current up to 1000mA (for under a second) is fine for most start-up loads. The 18mm diameter and 50.5mm height mean they fit standard holders, but the radial leads can be a pain if your PCB layout is tight—check the terminal spacing before you design in bulk.
Actually, one buyer we work with uses these in avalanche beacons, and the low self-discharge rate—roughly 1% per year at room temp—is why they chose it over nickel-based cells that'd need replacement every season. Not suited for high-drain devices like GPS trackers with frequent transmissions, though; the internal impedance climbs at low temps, so voltage sag can trigger brownouts if you're pulsing too hard. Most procurement folks go with the standard radial leads, but we can do custom tabs if your volume justifies the tooling change.
We include a COA with every shipment, and the CE, RoHS, UN38.8, and MSDS docs are bundled—though the UN38.8 test report is specific to the batch number, so confirm lead time if you need it updated. 3500mAh is the nominal capasity, but we've measured actual discharge at 3450mAh to 3520mAh depending on the load profile; the 29g ±1g weight is consistent across. Our QC flags any cell with votage below 3.4V after 30 days of storage, which is tighter than the of 3.0V.
Payment terms are typically 30% deposit with the balance on shipment for first-time orders, but our company can negotiate net 30 after three clean transactions—MOQ is usually 500 units, though we've done 200 for a test run if you cover the setup fee. Shipping is via DDP for most destinations, and we'll arrange the IATA paperwork for the lithium metal classification (Class 9) at no extra charge. Stock levels fluctuate, but we usually have 2,000 to 5,000 cells on hand, so lead time is about 20 days or so form order confirmation.
Our standard MOQ for the ER18505M is 1,000 pieces, but we can discuss smaller trial orders depending on your project needs.
Yes, we include all those certifications—CE, RoHS, UN38.3, and MSDS—with every order. Just let us know if you need them in a specific format.
No, the max pulse current is 1000mA for pulses up to 1 second. Exceeding that could damage the battery or reduce its lifespan.
Keep them in a cool, dry place between -20°C and +60°C, ideally around 20°C. Avoid high humidity and direct sunlight to maintain that 10-year shelf life.
Yes, we can customize the lead length or add connectors to fit your application. Just specify your requirements when placing the order.
Hats off to the exceptional logistics team! The delivery was incredibly swift and well-handled. From the moment I placed the order, tracking was precise and updates were timely. The packaging was robust and secure, ensuring the product arrived in pristine condition. The quality of the battery itself appears outstanding upon initial inspection; it feels solid and well-manufactured, exactly as described. Customer service was equally impressive—responsive, polite, and very helpful with my pre-purchase inquiries. Overall, a seamless and highly satisfactory purchasing experience from start to finish. I am thoroughly pleased and would confidently recommend this supplier to others based on this transaction.
Commendable experience from start to finish. The shipping was remarkably swift and the package arrived securely without any damage, which was a relief. Communication throughout the process was clear and professional, making the transaction smooth. The battery itself appears to be of solid construction, matching the specifications listed. Overall, a very satisfactory purchase with no complaints regarding the logistics or the support received.
Jaw-droppingly fast delivery! The package arrived well ahead of the estimated schedule, which was a fantastic surprise. The battery was securely and professionally packaged, showing clear attention to detail for safe transit. Regarding quality, the initial inspection reveals a robust and well-constructed cell that matches the product description perfectly. The communication from the supplier was prompt and clear throughout the process, making the entire transaction smooth and worry-free. This level of service and logistical efficiency is commendable and sets a high standard. I am thoroughly impressed with the seamless experience from ordering to receipt. The overall professionalism exhibited is outstanding. I would not hesitate to recommend this supplier based on this initial interaction. A truly positive experience that inspires confidence for future purchases.
Delivery was remarkably swift and efficient. The package arrived well-protected and ahead of schedule, which was a pleasant surprise. The logistics process was seamless from tracking to final handover. Regarding quality, the batteries appear to be solidly constructed with good terminal integrity and proper labeling, matching the specifications for a high-temperature range application. Customer service communication was direct and helpful during the ordering confirmation phase. A straightforward and satisfactory procurement experience overall.
Outstanding experience from start to finish. The shipping was remarkably fast and efficient, with the package arriving well ahead of the estimated delivery date. Everything was securely packaged, showing clear attention to detail in logistics. Regarding quality, the batteries appear to be very well-constructed with solid casing and clear, professional labeling, which inspires immediate confidence. The service aspect was equally impressive; communication was prompt and helpful, and any preliminary questions were answered clearly and professionally. The overall process felt seamless and reliable. It’s evident that care is taken at every step, from processing the order to its final delivery. This level of execution in logistics, perceived quality, and customer service is commendable and makes for a very satisfactory purchasing experience. I would certainly consider this supplier for future needs based on this smooth and professional interaction. The entire transaction reflected a high standard of operation that is sometimes hard to find.
Smooth delivery process from start to finish. The shipping was remarkably prompt, with the package arriving well ahead of the estimated schedule. Tracking information was consistently accurate and updated in real-time, which made monitoring the shipment effortless. The item was packaged with exceptional care, utilizing sturdy materials that provided excellent protection during transit. Upon inspection, the battery itself appears to be of superior build quality. The construction feels robust and the terminals are clean and well-defined, indicating careful manufacturing standards. Communication from the supplier was clear and professional throughout the entire transaction. Any preliminary inquiries were addressed swiftly and with helpful detail. The overall experience was highly satisfactory, reflecting a well-organized operation that prioritizes both product integrity and customer service. This level of attention to logistics and quality assurance is commendable and makes the purchasing process reliable and stress-free. I am confident in the supplier’s capabilities based on this seamless experience.
Naturally, the delivery was impressively swift, arriving well ahead of the estimated schedule. The packaging was secure and professional, ensuring the product was perfectly intact upon arrival. Regarding the item itself, the build quality feels robust and meets the specifications as described. The communication from the supplier was clear and proactive, providing timely updates. Overall, a very satisfactory experience from start to finish. The process was seamless, and the product appears to be of reliable manufacture. I am content with this transaction and the level of care demonstrated throughout.
Very satisfied with the overall experience. The shipping was remarkably fast and efficient, with the package arriving well ahead of the estimated delivery date. It was securely packaged, showing no signs of damage during transit. The quality of the battery itself appears to be excellent upon initial inspection; it feels solid and well-constructed, matching the specifications provided. Communication from the supplier was clear and professional throughout the process, promptly addressing a minor inquiry I had regarding the order. While I have not yet put the battery into long-term use, the initial impressions regarding the physical product and the transactional aspects are highly positive. The service was reliable, and the logistics were handled seamlessly, making the purchase process straightforward and hassle-free. This supplier seems dependable for such specialized components.
Excellent delivery speed and reliable packaging ensured my order arrived safely without any delays. The battery's construction appears robust and well-made, meeting my expectations for durability. Customer support was responsive and helpful when I had a query, making the overall experience smooth and satisfactory.
Great experience overall! The shipping was incredibly fast and well-packaged, ensuring the battery arrived safely without any delays. Good quality product—it feels sturdy and well-made, exactly as described. Excellent customer service too; the support team was responsive and helpful with my inquiries. Highly recommended for their efficiency and reliability.
