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For Dell Latitude E5540
For Dell Latitude E5440

1. We can promise to use imported lithium batteries made in Japan/South Korea
2. We have factory and 15 years store in Guangzhou, we have the ability to protect the quality of the battery
3. Our company has a professional team of technical engineers who can help you solve any technical problems or provide you with free technical guidance services
4. All products are tested by our department before shipment
5. All products are sold in stock, and immediate delivery can be guaranteed after payment is completed

1. Items will only be shipped after payment is received.
2. We ship items SEP Fedex EMS DHL
3. Free shipping is only available in selected countries/regions, please check the shipping and packing list for details. we finally decide
4. If you do not receive your item on time, please contact us immediately for further assistance
5. We accept Western Union and credit card payments
6. If the buyer has any payment problem, please contact as soon as possible
7. If the buyer pays by bank transfer, the buyer must pay the bank fee

Japan 8-13 days Korea 8-13 days
Thailand 8-13 days Israel 18-25 days
Russia 25-35 days Brazil 20-35 days
European countries 18-30 days Australia 12-18 days
Canada 15-30 days UAE 12-18 days
15-20 days to Chile More countries please contact us


1. When using a new battery for the first time, please fully charge it first, and then use up about 10% of the battery to fully activate the lithium ion.
max capacity

2. Do not discharge the new battery to 0%, otherwise it will be easily damaged and aged, which will shorten the battery life.

3. If the battery is not used for a long time, it needs to be charged to more than 80% for storage, and the storage time should not exceed 3 months.

4. The battery life is about 1000 times of charge and discharge

5. If the battery cannot be charged after receiving the goods, please check your power adapter and try to turn off the battery to charge

6. Please charge in time after the battery is exhausted. If it is not charged for a long time, the battery will be damaged.

7. If you have any problem with your product, please contact us immediately. We will do our best to help you solve the problem. Please do not open a dispute until you have communicated with us

Or leave negative feedback.

8. The product is constantly updated, and the appearance of the product may have some differences.