How to Select a Lithium-ion Battery Supplier: OEM Eight ...

Making the Decision: Lithium-Ion Battery Supplier

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The lithium-ion battery market is in a state of flux. Lithium-ion is a relatively new technology that has taken off in the last five to 10 years and demand for these batteries is high and growing. This has attracted many OEM's and created something of a buyer-beware market for OEM.

Many critical factors must be considered when deciding on a forklift battery supplier. Choosing the wrong lithium-ion battery for a forklift can impact the entire operation of an OEM's business, from procurement to production. An OEM's day-to-day operations depend on forklift transportation, and a forklift's day-to-day operations rely heavily on the battery. Choosing a lithium-ion forklift battery supplier is the first step in determining the success of an OEM's daily processes. OEMs need suppliers who can meet JIT shipping demands, lead technical innovation, and provide extended technical service. Without that, you may end up with a lithium-ion supplier instead of a lithium-ion partner who will be with you for the long run. That can lead to dissatisfied customers and lost time and money.

Ask the manufacturers these questions:

1. To get an idea of how established the company is ask how long they have been in business, how long they have been serving the material handling industry, and whether they have supplied batteries to major OEMs. You could also ask if they offer a full portfolio of batteries including flooded lead-acid, AGM, and lithium-ion. You may want to move on if the manufacturer is a start-up, has been serving the material handling industry for just a few years, or has not supplied batteries to OEMs.

Older, more seasoned companies that understand the material handling industry and manufacture and sell a full line of forklift lithium battery products generally know the issues that can damage batteries and shorten their lifespans. They often engineer solutions to these problems into their products.

2. How long have you been working with lithium-ion technology? Again, the company probably has a lot to learn if the answer is just a few years.

3. What kind of customer support do you provide? Make sure the company has a U.S-based and Europe customer support line staffed by real people who can answer questions and help your technicians troubleshoot issues. Ask if support is available 24/7 and if the staff includes representatives dedicated to lithium-ion products. Many newcomers to the market simply don't have the infrastructure to provide that level of service.

4. How do you support the dealers who carry your products? You don't want to work with a supplier who sells products and then forgets about you. To avoid tag and long hold times, look for a manufacturer with a systematic approach to communicating with dealers. Ask if the manufacturer has an authorized dealer network through which it trains dealers to sell its products and provides them with the information and materials they need.

5. How do you sell your batteries? Many battery manufacturers sell directly to dealerships and are unable to provide the follow-up services dealers may need. Look for a supplier who sells their batteries through a network of trained distributors. These distributors generally know and stand by their products, adding value to your purchase.

6. How is your battery different from others in terms of design and engineering? Look for products with UL certification and at least an IP67 rating. This helps protect the battery from damage from vibration, water and dust and can extend its life. Make sure the battery is embedded and modular expandable.

Ask how the battery is designed to move the damaging heat it generates away from the cells. Most manufacturers do this through inexpensive components called heat sinks because they are easy to make and add on.

But heat sinks should not be the only method of heat management. Well-made batteries reduce the heat generated and allow for natural cooling in the design. This requires more engineering expertise, but it boosts efficiency, improves safety, and prolongs battery life.

7. What range does your battery get? To help OEMs, BSLBATT has developed 43 standard modules for lithium batteries of different capacities, which can form parallel building blocks in forklift battery compartments. Up to 20 of these modules can be stacked in parallel, and the total capacity can be tailored to forklift OEM needs. It's also worth mentioning that OEMs must check usable capacity, not advertised capacity. The stated capacity may be based on the sum of the individual cells within the battery, which does not take into account internal losses like usable capacity. Real-world test data and customer testimonials are the best way to understand the usable range of a battery. This is especially important in the high-capacity, high-current and relatively low voltage batteries used in MHE.

8. What safety features are built into your battery? Look for a battery with lithium-iron-phosphate cells, one of the most stable lithium-ion battery chemistries. Make sure the BMS features several levels of safety redundancy. That way, if one level fails another will step in, catch the issue, and turn the battery off, protecting you and your property. Ask about UL certifications. Is the entire pack UL-certified or does the manufacturer rely solely on the cell provider's UL listing? BSLBATT is the first forklift lithium battery in China to obtain UL certification for its complete product line.

Stocking batteries on pricing alone is a big mistake that can impact your bottom line. Be sure to compare the manufacturers' experience, support services, and products. Investing a little time in your decision can have big payoffs in your sales, service, and customer satisfaction.

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Lithium thionyl chloride batteries (Li/SOCl') belong to the lithium primary cell family. Unlike lithium ion or lithium polymer batteries, these cells cannot be recharged once they have been discharged. However, due to their long lifetime, this characteristic is of little importance in everyday use. In fact, lithium thionyl chloride batteries supply power to applications for several months or even years before they need to be replaced.

Li/SOCl' batteries have been an integral part of Jauch's battery portfolio for many years. This year, the portfolio expanded to include batteries from Jauch's own brand. The most important properties of this cell chemistry are briefly presented below.

High Voltage ' High Safety

Lithium primary cells, which also include lithium iron sulfide or lithium manganese dioxide batteries, usually have a cell voltage between 1.5 volts and 3 volts. However, the cell voltage of a lithium thionyl chloride battery is significantly higher than these values: with a voltage of 3.6 volts. At this value, the battery performs to the level of lithium ion batteries. This voltage level is kept constant by the battery over almost the entire discharge period ' an absolute unique selling point of lithium thionyl chloride cell chemistry.

In terms of energy density, Li/SOCl' batteries are also superior to all other primary cells. Values up to 710 watt hours/kilogram are possible.

Constant voltage: Li/SOCl' batteries deliver a constant voltage of 3.6 volts until almost complete discharge.

Low Currents ' Wide Temperature Range

Lithium thionyl chloride batteries are used wherever low currents are required over a long period of time. Typical applications are for example locking cylinders, timers, toll systems or all kinds of metering applications. The high energy density of the thionyl chloride cells ensures that these applications can be operated for several months or even years without having to replace the battery.

Lithium thionyl chloride batteries are designed for use in a temperature range between -60 and +85 degrees Celsius. Particularly noteworthy is the performance of the cells at low temperatures. Even at double-digit minus temperatures, the cells deliver a constantly high voltage.

Temperature: Li/SOCl' batteries from Jauch reliably deliver high voltages even at double-digit sub-zero temperatures.

Passivation of the Battery

Lithium thionyl chloride batteries are very durable and have a very good shelf life. The self-discharge rate of only 1% per year speaks for itself.

The longevity of lithium thionyl chloride batteries is due to the chemistry of the cell. Unlike other lithium primary cells, the lithium thionyl chloride cell undergoes a chemical reaction between the lithium anode and the electrolyte. As a result, a protective film forms over the lithium anode, which impedes the ion flow between the anode and cathode. This is referred to as 'passivation' of the battery cell. 

This phenomenon has advantages and disadvantages. On the one hand, passivation is responsible for the low self-discharge rate of the battery. On the other hand, the resulting protective film initially impedes the current flow when the battery is put into operation. The protective film gradually fades away as the battery continues to operate. However, it forms again as soon as the battery stops drawing current. For this reason, lithium thionyl chloride batteries are particularly suitable for applications with low power consumption. The power requirement of the application can be constant or pulse-shaped. 

The Bobbin-Type Cell Construction

Lithium thionyl chloride batteries are available in numerous sizes and designs. No matter what variation your application requires, the core properties: high voltage, high energy density and long life, stay the same.

The 'Bobbin-type' construction has established itself as the most frequently used cell construction method. This design, which is also used in the cells of Jauch's thionyl chloride batteries, is characterized by a high level of safety and a long service life. These batteries deliver currents of up to two Amperes. 

Jauch's portfolio of Lithium thionyl chloride batteries.

Jauch's battery portfolio includes various Li/SOCl' batteries. An overview of the entire Jauch portfolio of lithium thionyl chloride batteries can be found here.

Our battery experts will be happy to advise you on which of these cells is best suited for your application. Equipped with the expertise from countless successfully completed projects, our experts will also find the perfect solution for your requirement profile and will advise you on request directly at your site.

You already know what you need? Then order your samples here!

Contact us to discuss your requirements of mAh li socl2 battery. Our experienced sales team can help you identify the options that best suit your needs.