Replacement HP ProBook 4421 Laptop Battery

HP ProBook 4421 Laptop Battery Guarantee

• 1 year warranty, 30 days money back guarantee, 100% brand new.
• Never sell used or refurbished batteries.
• Shopping with us is safe and secure, 100% customer satisfaction.
• Worldwide Shipping, includes USA, Canada, Australia, New Zealand, United Kingdom, Ireland etc 200 Countries. The shipping cost is US $10.00.
• Items are generally shipped out in 1-2 days after payment is received.
• Any questions, please don't hesitate to contact us.

Some tips for the new replacement HP ProBook 4421 battery

• Please charge 3-4 hours before using the new battery for HP ProBook 4421 laptop for the first time; normally it requires two to three charge/discharge cycles before achieving maximum capacity.
• If external power supply will be used for a long time, please remove the replacement ProBook 4421 battery from your HP laptop, which can increase the battery life, as connecting to a power supply each time is considered to be a single battery charge.
• Never short-circuit the repalcement battery for HP ProBook 4421 laptop battery pack by either accidentally or intentionally bringing the terminals in contact with another metal object. This could cause personal injury or a fire, and could also damage the battery pack. .
• If your replacement HP ProBook 4421 battery will not be in use for a long time, remove it from your laptop and store it in an Anti-Static bag in a dry, cool place; Make sure that the battery is preserved with electricity(about 30-50% of its capacity) and it is highly recommended that the battery should be charged at least once a month.