OEM & ODM Service
ESAUL provides portable and durable power packs tailored to your camping needs.
Design
At ESAUL, our engineers will create drawings and provide solutions based on your custom needs.
Prototype
We will provide prototypes for testing and modification in a short time.
QC Inspection
Our strict quality inspection process ensures that each product is in good condition before delivery.
Shipment
ESAUL can arrange shipment via sea, air, express, or train according to your preference.
At ESAUL, we are committed to providing OEM/ODM services, and we are experts in advanced energy storage system technology. We provide a wide range of services, from design to proposal to manufacture, to meet all your needs. There is nothing better than working with us.
ESAUL OEM/ODM solutions combine innovative modern technology with your product standards to ensure you get the most perfect products. We approach each partner with an open mind, understanding your needs and ensuring you understand our capabilities, standards and commitment to delivery.
Putting performance and customer experience at the forefront, our experienced engineers and development team bring your vision to life. This also makes us an ideal partner for custom battery solutions.
If you are looking for a reliable partner to customize your products, contact us today!
Sales Support
Pre-sales Support: Before making a purchase, we understand that customers can become confused about what they should buy, especially when there are multiple models and products to choose from. At ESAUL, we have solved this problem by offering consultation services before purchase. Customers can reach out to us and share their requirements, and we will suggest suitable products to help them buy the right lithium-ion battery and portable power station.
In addition, we also offer OEM services where customers can provide their own designs. We provide design consultation services to thoroughly check the designs. Our experts offer in-depth feedback on the design and propose solutions or make amendments if necessary. If the design is perfect and without issues, we can easily proceed with implementing their design and manufacturing the product.
On-sales Support: Quality is of utmost importance at ESAUL, and we take every measure to ensure it. Before any product leaves our facility, we conduct a thorough inspection. Our team of 40 members performs a quality check to ensure that everything is up to the mark.
We adhere to high-quality international standards and hold certifications such as ISO 9001 and ISO 14001. Our state-of-the-art facility is equipped with the latest machines to test products and assure quality. After the quality test, we provide a quality guarantee to our customers.
At ESAUL, we value our customers’ time and plans. Therefore, we partner with reliable shipping companies to ensure that orders are delivered on time. We strive to avoid unexpected delays and surprises, ensuring that orders reach their destination without any delays.
After-sales Support: At ESAUL, our expert team provides technical support for any issues related to Lithium-ion battery packs or portable power stations. We offer a reliable warranty for all our products, and customers can claim it in case of any problem. Our team will guide them on how to return the product and repair or replace it according to the issue. We also keep our customers updated with the latest news, events, and special discounts related to new products and upgrades.
Downloads
Frequently Asked Questions
What is the biggest disadvantage of a lithium-ion battery?
Despite its overall advantages, lithium-ion has its drawbacks. It is fragile and requires a protection circuit to maintain safe operation. Built into each pack, the protection circuit limits the peak voltage of each cell during charge and prevents the cell voltage from dropping too low on discharge.
How long will my lithium battery power batteries live for?
Esaul’s advanced lithium technology can achieve over 3000+ complete charge and discharge cycles while still retaining over 100% DOD (depth of discharge). After roughly 3,000 cycles your battery will still work, but it might have about 80% of its life left. At this point, a 12V 100Ah battery is now comparable to a 12V 80Ah battery.
What happens if I charge my lithium deep cycle battery too high?
If you charge your lithium deep cycle battery above 15V for 12V battery, the BMS inside the battery terminal will turn off. The cut-off voltage settings will vary slightly depending on current levels, temperature and part tolerances. To turn ON the battery again, disconnect the charging source and let the battery rest for several seconds (~30 sec) it should come on. In the event the 12V battery had voltages higher than 18V, the internal BMS is damaged and will not turn ON.
How do I choose the correct lithium deep cycle battery for my application?
In most standard 12, 24, or 48 volt systems the best choice of lithium battery is LiFePO4 (Lithium Iron Phosphate). The voltage of this type of battery is very similar to an AGM and will work great with readily available system components for your RV, boat, or off-grid power system.
If you have a device that requires a higher voltage of DC power, please email us at [email protected] and we will help you find the right battery for your application.
What is the difference between series and parallel connection?
There are two different ways of connecting batteries together to make a larger power bank.
Series Connections – This type of connection is used when you need to increase the voltage of your battery bank. Most commonly, series connections are found in 12 V systems. Your batteries will be connected from positive to negative, linking the batteries together to increase the voltage of your battery bank (see diagram below).
Parallel Connections –These connections are used when you want to increase the amperage of your battery bank. You will find these types of battery connections in all types of battery banks including 12 V, 24 V, 48 V systems. The connections in this type of battery bank are different than series . The connections on this type of battery bank go from positive to positive and negative to negative, when you connect this way, you double your amps (see the diagram below).
*If you plan to wire your batteries in series, please let us know when you place your order so we can make sure to match your capacity.
In some instances when you have a larger size battery bank, it is common to have both series and parallel connections in your battery bank
How do I size a li-ion battery bank for my system?
Sizing a battery bank for an off-grid or mobile power system can get complicated if you don’t have all the information you need to make the right calculations. You will need some basic information to get started.
You will need the maximum and continuous draw – in amps or watts – of the devices you want to power. These are usually found somewhere on the device on a sticker or plate that shows the amps and volts of that device or the power in watts.
As an example, let’s just say that our system needs to run 10 amps at 120 volts for 3.5 hours.
10 amps x 120 volts = 1200 watts of power.
1200 watts x 3.5 hours = 4200 watt-hours of energy.
Next you need to convert 4200 watts-hours to direct current (DC) amp-hours. For our example, we will use a 12 volt battery bank.
4200 watts-hours / 12 volts = 350 DC amp-hours of battery energy needed for our sample application.
Also, the battery needs to be able to deliver 1200 watts/ 12 volts = 100 amps of power.
We will use the 100 amp-hour Battle Born battery to build this system.
350 amp-hours / 100 amp-hours = 3.5
We would need to use four 100 amp-hour LiFePO4 Battle Born Batteries to power this system.