High-grade Battery for Compaq Presario R3421EA (4400mAh, 8 cells)
- SKUBUS91
- ConditionReplacement, Brand New
- Voltage14.4V
- Capacity4400mAh
- Number of Cells8 cells
- Cell TypeLi-ion
- ColorBlack
- Size152x114x21.10mm(L x W x H)
- Warranty1 Year
- AvailabilityIn Stock
Product Features
Excellent Quality，Thorough Service
The replacement battery for Compaq Presario R3421EA from BatteryBuy.us will be your best choice. We offer a high-quality laptop battery at a more reasonable price. Our Compaq Presario R3421EA 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 the new experience of excellent durability.
With first-class quality assurance, the battery for Compaq Presario R3421EA provides protections of voltage, short circuit, charging time, ESD, and so on. Each Compaq Presario R3421EA 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 R3421EA battery for you.
In addition, we provide 30-Day Money Back Guarantee and a One-Year Warranty for you. If you have any dissatisfaction after receiving the battery for Compaq Presario R3421EA, 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
Compatible Compaq Part Numbers
- 346970-001
- 350836-001
- 371914-001
- 378858-001
- 383966-001
- 383968-001
- DP390A
- DP390A
- HSTNN-DB02
- HSTNN-DB03
- HSTNN-IB14
- PP2200
Compatible Compaq Laptop Models
- Presario R3421EA
- Pavilion ZD8000 Series
- Pavilion ZD8030EA
- Pavilion ZD8076EA
- Pavilion ZD8217
- Pavilion ZD8224EA
- Pavilion ZD8227
- Pavilion ZD8480EA
- Pavilion ZV5111EA
- Pavilion ZV6017US
- Pavilion ZV6115XX
- Pavilion ZV6180EA
- Pavilion ZV6230CA
- Pavilion ZV6230EA
- Pavilion ZX5001US
- Pavilion ZX5002XX
- Pavilion ZX5280EA
- Presario R3012AP
- Presario R3023AP
- Presario R3200
- Presario R3220CA
- Presario R3310CA
- Presario R3363
- Presario R4035
- Presario R4145
Shipping Methods
Payment Methods
Warranty
1-Year Warranty
All our high-quality replacement batteries for Compaq Presario R3421EA 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 partial customer satisfaction into 'Total Customer Satisfaction'. That's why we offer you a 30-day money back guarantee, except for warranty and return for defects!
Please note: To qualify yourself for reimbursement, please contact our customer service first and get instructions before returning your parcel.
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 to your problem. Once it cannot be fixed by our technical support engineer, we will generate an RMA number (Return Material Authorization) for you to return the faulty battery. we will ship out a new battery without extra charge if the returned one turns out to be defective.
Please note: we won't process returned batteries if you don't provide an RMA number on the returned parcel.
FAQs
A: Through the product compatibility table, you can check if Compaq Presario R3421EA replacement battery is compatible with your laptop model. Clicking product larger Images, you can confirm the selected correctness of Compaq Presario R3421EA 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?
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 R3421EA battery.
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 when 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 the 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 R3421EA battery out of the laptop.
1 Turn off the laptop and unplug the power cord.
2 Uninstall your old Compaq Presario R3421EA battery carefully.
3 Use a clean cloth to wipe off the dust from the battery compartment. It'd be better to wipe the exposed conductive part 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 R3421EA replacement battery into your laptop, and remember to close the battery latch.
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