Name: Compaq Presario CQ20-408TU Battery
Brand: Compaq
SKU: BUS36
Price: 35.87 USD
Availability: InStock

Note: 1. 14.4V and 14.8V are compatible, they are in common use. 2. The 5200mAh(8 Cell) battery will extend out about 1 inch from the bottom of the laptop, bigger size but lasting longer and help cooling.

Product Features

Excellent Quality，Thorough Service

The replacement battery for Compaq Presario CQ20-408TU from BatteryBuy.us will be your best choice. We offer the high quality laptop battery at a more reasonable price. Our Compaq Presario CQ20-408TU batteries can be charged/discharged for at least 600 cycles. Being made of ABS plastic case and the original IC protection chip, it could give you new experience of excellent durability.

With first-class quality assurance, the battery for Compaq Presario CQ20-408TU provides protections of voltage, short circuit, charging time, ESD, and so on. Each Compaq Presario CQ20-408TU laptop battery has passed a series of safety certifications, such as CE, UL, ROHS, ISO9001/9002. It will be rigorously tested by our technicians before being shipped to your hands. We will try our best to select a high quality Compaq Presario CQ20-408TU battery for you.

In addition, we provide a 30-day money back guarantee and a one-year warranty for you. If you have any dissatisfaction after receiving the battery for Compaq Presario CQ20-408TU, you can click the link to find more details about our Returns and Warranty service. Please rest assured to purchase from us！

Multiple Intelligent Protection

INTELLIGENT PROTECTION
VOLTAGE PROTECTION
SHORT CIRCUIT PROTECTION
ESD PROTECTION
OVER HEAT PROTECTION
OVER (DIS)CHARGE PROTECTION
CHARGING TIME PROTECTION
CLASS A PROTECTION

Product Larger Images

Battery for Compaq Presario CQ20-408TU laptop

Compatible Compaq Part Numbers

482372-251
482372-252
482372-261
482372-262
482372-321
482372-322
482372-323
482372-361
482372-362
493202-001
501717-341
501717-362
501935-001
HSTNN-153C
HSTNN-DB77
HSTNN-I53C
HSTNN-OB77
HSTNN-OB84
HSTNN-XB77
HSTNN-XB84
HZ08073
KU681AV
NBP4A112
NBP4A112B1
NBP8A128B1
NBP8A128B2
NK573AA
NK573AA

Compatible Compaq Laptop Models

Presario CQ20-401TU
Presario CQ20-402TU
Presario CQ20-403TU
Presario CQ20-404TU
Presario CQ20-405TU
Presario CQ20-406TU
Presario CQ20-407TU
Presario CQ20-408TU
Presario CQ20-409TU

Shipping Methods

Payment Methods

Warranty

1-Year Warranty
All our high quality replacement batteries for Compaq Presario CQ20-408TU laptop 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.
Please note: we cannot process returned batteries if you have not yet received an RMA number.

FAQs

Q: Is this Compaq Presario CQ20-408TU battery compatible with my laptop？

A: Through product compatibility table, you can check if Compaq Presario CQ20-408TU battery is compatible with your laptop. Clicking product larger Images, you can confirm the selected correctness of Compaq Presario CQ20-408TU laptop battery. What’s more, please pay attention to check if the voltage (rated value) is the same as your old one. For more details please click How to find one correct battery for my laptop?

Q: How long will the Compaq Presario CQ20-408TU battery last? When should I replace my battery?

A: All rechargeable batteries are being spoilt gradually from the date it starts running. Performance degradation will be found by users in 18-24 months. When the runtime is unable to meet your demand, we’d suggest you buy a new Compaq Presario CQ20-408TU battery.

Q: How to charge my Compaq Presario CQ20-408TU laptop battery correctly？

A: There is no need for you to charge the battery over 12 hours, just charge and discharge it normally instead. Because lithium-ion battery has no memory effect. Additionally, you should charge in time while the power remains only 10%-20%. If your battery won’t be used for a long time, please charge it once a month and keep battery power over 50%. Moreover, there is no harm even if you charge battery while using your laptop or supply external power in a fully-charged state. However, if your laptop has been running at high speed for a long time, which causes overheat insides, you'd better take the Compaq Presario CQ20-408TU battery out of laptop.

Q: How to replace my Compaq Presario CQ20-408TU laptop battery?

1 Turn off laptop and unplug the power cord.
2 Remove the battery release button, and then uninstall your old Compaq Presario CQ20-408TU battery carefully.
3 Use a clean cloth to wipe off dust from the battery compartment. It’d be better if you could wipe the exposed conductive part, which connects battery and laptop, with alcohol to remove the copper rust before installing a new battery.
4 Keep your laptop and battery in a cool dry place (heat may destroy a battery).
5 Install new Compaq Presario CQ20-408TU replacement battery into your laptop, and remember to close the battery latch.