Radio Communication Battery BTY4000LI22 4000mAh for TD Tech EP821/-D45 MZ960ALI

Warranty

1-Year Warranty
All our high quality replacement batteries for TD Tech BTY4000LI22 come with a 1-year warranty. Warranty is applicable if the buyer has installed the battery properly in the device and has treated the battery correctly.
30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee, on top of our warranty and RMA procedure for defects!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.
Returns
If you have a problem with one battery which bought from us, please contact us first. We will process your request and try to find a solution for your problem. If the problem cannot be fixed by our technical support engineer, we will generate an RMA number (Return Material Authorization) for you. If inspection concludes that the returned battery is defective, a new battery will be shipped out without extra charge.

FAQs

Q: How to check this battery is compatible with my laptop?

A: Please find out your old battery's part number or the exact model name of your laptop at first (like 'TD Tech BTY4000LI22'), then to match our product compatibility chart. Second please compare your old battery to our product images ensure their shape is same. Finally check the voltage(Rating) is same to your old battery's.

Q: Does your replacement TD Tech BTY4000LI22 battery compatibles with my original TD Tech BTY4000LI22 battery?

A: 100% OEM compatible, guaranteed to meet the specifications of your original TD Tech EP821/-D45 MZ960ALI battery (ensue same size & high quality). And all our batteries for TD Tech BTY4000LI22 have obtained international certification( CE, UL, ROHS, ISO9001/9002 ).

Q: How to charge a new battery for TD Tech BTY4000LI22 for the first time use?

A: New TD Tech BTY4000LI22 battery pack is normally shipped in its partially charged condition. Please cycle your new TD Tech BTY4000LI22 battery pack by fully charge and discharge it for 3-5 times to allow it to reach its maximum rated capacity before use. (Note: it is perfectly normal for a battery to become warm to the touch during charging and discharging).
New batteries are hard for your device to charge; they have never been fully charged and are therefore "unformed". Sometimes your device's charger will stop charging a new battery before it is fully charged. If this happens, simply remove the battery from your device and then re-insert it. The charge cycle should begin again. This may happen several times during your first battery charge. Don't worry; it's perfectly normal.

Q: How to Remove Replace Install and Upgrade your TD Tech BTY4000LI22 Radio Communication Battery?

A: 1. Turn yourTD Tech BTY4000LI22 laptop over.
2. Find the laptop battery release button lock for your TD Tech BTY4000LI22 laptop.
3. Now that your TD Tech BTY4000LI22 Radio Communication Battery is unlocked, find the battery release button down.
4. Holding the Radio Communication Battery release button, gently pull your battery away from the laptop.
5. Now that your TD Tech BTY4000LI22 battery is removed, grab your replacement TD Tech BTY4000LI22 battery for installation.
6. Insert the battery into the slot. Push the TD Tech BTY4000LI22 battery towards the laptop and secure it in place.

Q: How To Extend Your TD Tech BTY4000LI22 Battery Life

1. When using a laptop, you can dim the screen. By far the biggest power drain on most laptops is the screen.
2. Don't leave your Asus laptop battery on the permanent charge.It is not advantageous to charge the original Radio Communication Battery BTY4000LI22 for a long time.
3. By default, your laptop might be set to Windows’ ‘Balanced’ setting rather than Power Saver,you can customize a power plan by clicking Change plan settings next to a profile.