COMPAQ Presario CQ42-300
For COMPAQ Presario CQ42-300

Replacement For COMPAQ Presario CQ42-300 Laptop Battery

Brand New Replacement For COMPAQ Presario CQ42-300 Battery.The superior Grade A cells inside this battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. The battery for COMPAQ Presario CQ42-300 has been precision-engineered and rigorously tested for capacity, voltage, compatibility and safety to exceed original equipment manufacturer specifications. Order Your Replacement Battery Today,1 Year Warranty,60-Day Money Back Guarantee!


Add to Cart:


  • Model: COMPAQ Presario CQ42-300
  • 100 Units in Stock


Battery Type: Li-ion
Voltage: 10.8V or 11.1V
Capacity:10400mAh / 12Cell
Weight: 452g
Size:205.02 x 53.02 x 43.02 mm

Replace Part Number:
586006-321 586006-361586028-341
MU09 NBP6A174NBP6A174B1
NBP6A175 NBP6A175B1WD548AA

Fits model:
COMPAQ Presaio CQ42 Series(All)
COMPAQ Presario CQ42-100 Series(All)COMPAQ Presario CQ42-102TUCOMPAQ Presario CQ42-106TU
COMPAQ Presario CQ42-108TUCOMPAQ Presario CQ42-115TUCOMPAQ Presario CQ42-116TU
COMPAQ Presario CQ42-118TUCOMPAQ Presario CQ42-131TUCOMPAQ Presario CQ42-151TX
COMPAQ Presario CQ42-152TXCOMPAQ Presario CQ42-153TXCOMPAQ Presario CQ42-154TX
COMPAQ Presario CQ42-158TXCOMPAQ Presario CQ42-160TXCOMPAQ Presario CQ42-165TX
COMPAQ Presario CQ42-166TXCOMPAQ Presario CQ42-167TUCOMPAQ Presario CQ42-167TX
COMPAQ Presario CQ42-168TUCOMPAQ Presario CQ42-170TXCOMPAQ Presario CQ42-171TX
COMPAQ Presario CQ42-173TUCOMPAQ Presario CQ42-173TXCOMPAQ Presario CQ42-175TX
COMPAQ Presario CQ42-176TUCOMPAQ Presario CQ42-176TXCOMPAQ Presario CQ42-177TX
COMPAQ Presario CQ42-179TXCOMPAQ Presario CQ42-181TXCOMPAQ Presario CQ42-188TX
COMPAQ Presario CQ42-189TXCOMPAQ Presario CQ42-194TX
COMPAQ Presario CQ42-200 Series(All)COMPAQ Presario CQ42-201TUCOMPAQ Presario CQ42-203TU
COMPAQ Presario CQ42-204AUCOMPAQ Presario CQ42-204AXCOMPAQ Presario CQ42-204TU
COMPAQ Presario CQ42-205AUCOMPAQ Presario CQ42-205AXCOMPAQ Presario CQ42-205TU
COMPAQ Presario CQ42-206AUCOMPAQ Presario CQ42-206AXCOMPAQ Presario CQ42-206TU
COMPAQ Presario CQ42-251TUCOMPAQ Presario CQ42-252TUCOMPAQ Presario CQ42-253TU
COMPAQ Presario CQ42-300 Series(All)COMPAQ Presario CQ42-324TU
Once your laptop battery starts showing signs of wearing out, such as not maintaining a charge for very long,you need a new battery. A spare battery to extend the range of your laptop while on the road is also a great idea, and comes handy wherever you may be, especially at the office and school. Stable and durable, these batteries are all 100% quality-tested and fully compatible with your laptops. Every battery is individually tested and comes with a 1 year warranty.

Warranty Policy:

  • Full 1 year quality warranty and 60-day money back guarantee!
  • For COMPAQ Presario CQ42-300 Professional grade A cell batteries custom manufactured for high performance and longer life to exceed OEM specifications
  • The Exact Match System guarantees every replacement for COMPAQ Presario CQ42-300 battery to be 100% compatible and optimized for your OEM system.
  • Every replacement laptop batterry has been Certified by CE, UL, ROHS, ISO9001/9002 and has passed strict safety tests. Long lasting,
  • Superior Design for True Fit and Finish.
  • Designed for precise fit & compatibility.
  • Free Shipping.
How to care for your laptop battery

  • Any new laptop battery should first be fully charged by leaving it plugged in overnight. Once a computer battery is fully charged it will no longer accept any more power. It is a common practice to leave laptops plugged in after they have been turned off so that the battery has a full charge the next time you use your laptop. It is probably fully charged within 5 hours.
  • Never run your battery below the 2% critically low warning point. If your battery is run below this point it may not have enough energy to even recharge. This may effectively "kill" your battery.
  • Usually a lithium-ion battery should be stored at about 40% state-of-charge, because laptop battery's self discharge can break the battery in the storage.
  • Please take out the COMPAQ Presario CQ42-300 battery from your machine when it is not being used and clean it with soft and dry cloth.
  • Run on battery power without the AC adapter cord at least once a week to keep the battery cells active and at their peak potential. When your laptop is plugged into the power adapter the battery goes to "standby mode" while your laptop runs directly on electricity from the wall outlet.