This Dell 33YDH Battery has a capacity of 3500mAh/56Wh and a voltage of 15.2V. Suitable for Dell Inspiron 17 7778 7779 Series. 100% compatible and 100% safe. 1-year warranty, 30-day money back guarantee. 

Dell 33YDH 3500mAh/56Wh 15.2V Notebook Battery

(product code: 33YDH) （Usually ships the same business day!）

• Product details：
• Brand: Dell 33YDH Notebook batteries
• Type: Li-ion battery
• Voltage: 15.2V
• Capacity: 3500mAh/56Wh
• SKU: DEL3X020

Replace the following batteries:

33YDH

Compatible with the following models:

Dell Inspiron 7778 7779

• If you cannot find what you need, we have some sister stores. Here we go!
• ES: Dell 33YDH Batería 
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• NL: Dell 33YDH ACCU 
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• IT: Dell 33YDH batteria 
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• DE: 33YDH Akku 

http://www.notebookbattery.co.nz/laptop-batteies-dell/replace-battery-33ydh-b179504.htm

Extend Notebook Battery Dell 33YDH Service life 

1.Charge the battery! Consider keeping it plugged in for 12 hours before you unplug.

2. Switch on the optimized battery or power feature. You'll find this option — sometimes referred to as max battery mode — in your Notebook Battery system's built-in power management control panel. You can select the option to reduce the amount of time your inactive Notebook Battery stays on before powering itself down and going to sleep.

3. Remove the battery and clean the metal contacts. Wipe them with alcohol, ideally every two months, to ensure that the power transfer between the Notebook Battery and its battery is as efficient as possible. Allow the battery to dry thoroughly before replacing it! 

4. Unplug any Notebook Battery accessories you aren't using. Even if they're not in use, accessories drain power from the battery.

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Wholesale and retail Notebook Battery in NZ. Replacement for Acer, Apple, Compaq, Dell, FUJITSU, IBM,Lenovo,Sony and so on.

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