Product Overview
The 3DDDG is a high-performance 11.4V 42WH replacement battery for the Dell Precision 3520, M3520, 3530 and M3530 mobile workstations. It delivers stable power for CAD, engineering and design workloads, matches the original 3DDDG factory specification and is backed by a 2-year warranty.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | 3DDDG |
| Voltage | 11.4V |
| Capacity | 42WH |
| Battery Type | Lithium-ion |
| Weight | 400g |
| Cell | Made in China, high quality guarantee |
| Color | Black |
| Warranty | 2-Year Professional Workstation Battery Warranty |
| Condition | Replacement Battery (100% Brand New, 2-year warranty!) |
Replace Part Numbers
- 3DDDG
Compatible Models
For Dell Precision Series
- For Dell Precision 3520
- For Dell Precision M3520
- For Dell Precision 3530
- For Dell Precision M3530
FAQ
Does this 3DDDG battery fit the Dell Precision 3520 and 3530?
Yes. The 3DDDG is the standard factory pack for the Dell Precision 3520, M3520, 3530 and M3530 workstations, so the connector and mounting match the battery you are replacing.
Will it handle CAD and engineering workloads?
It is rated 42WH at 11.4V, the same capacity as the genuine Dell pack, so it restores original workstation runtime for CAD, engineering and design work.
Which part number does this Precision battery replace?
It is a direct replacement for the original 3DDDG battery part number. Please confirm the code on your original battery label before ordering.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
China warehouse delivery method
Overseas Warehouse Shipping Times & Costs
Payment Methods
Paypal

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PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
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Google Pay
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Apple Pay
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Bank Transfer
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- What Should I Know Before Buying a Laptop Battery Replacement?A: Before buying a laptop battery replacement, confirm your laptop’s exact model number and the part number printed on the original battery. Check the battery voltage, connector, physical dimensions, and compatibility list. Do not choose a battery based on appearance alone, because similar laptop models may use different batteries. Review the seller’s warranty, return policy, and product specifications before ordering.
- How Do I Find a Compatible Laptop Battery for My Device?A: To find a compatible laptop battery, identify your laptop’s full model number and the part number on the original battery. Compare these details with the replacement battery’s compatibility list and specifications, including voltage, connector type, and dimensions. If you are unsure, contact customer support with your laptop model and original battery part number before placing an order.
- Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- Why Is My Laptop Battery Not Charging?A: A laptop battery may not charge because of a faulty AC adapter, damaged charging port, loose connection, temperature protection, battery-health settings, or a worn-out battery. Confirm that you are using a compatible charger and inspect the cable and port for visible damage. Restart the laptop and review the manufacturer’s battery or charging settings. If the battery becomes unusually hot, swollen, or damaged, stop using it and seek professional assistance.
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Are BatteryMall Laptop Batteries Reliable?BatteryMall laptop batteries are designed with safety and reliability in mind. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating, helping protect the battery during normal use. They are also CE, FCC, and RoHS certified. For the best experience, choose a compatible laptop battery that matches your exact laptop model and original battery part number, and follow the installation and care instructions. BatteryMall also provides a 1-year warranty on KingSener batteries purchased from BatteryMall; see the Product Warranty page for details.