Coogo.biz › Replacement Laptop Batteries › Replacement for HITACHI Laptop Batteries › Extensa 391C Battery

Widest selection of electronic accessories products, compatible with Ni-MH HITACHI Extensa 391C Laptop Battery. Brand New, Three Years Warranty, Secure Online Ordering Guaranteed. Quality Assured for Safety and Performance.

Ni-MH Replacement for HITACHI Extensa 391C Laptop Battery

Click to Enlarge
Sale price: AU $ 48.41
Brand New, Three Years Warranty!
Free Shipping

Type:Ni-MH
Volts:10.8V
Color:black
Capacity:4000mAh
Dimension:214.60x57.60x21.40mm
Condition: Brand New, Three Years Warranty
Sale Price: AU $ 48.41
coming soon

Product Details

Replacement for HITACHI Extensa 391C Laptop Battery
Product Type: Replacement Battery (Brand New)
Highest quality battery cells
100% original manufacturer compatible
Full three years warranty
Guaranteed to meet or exceed original specifications
Please ensure the product(s) that you are going to buy fits the brand, model and part number of your device. eg: if you want to buy a replacement HITACHI Extensa 391C Laptop Battery for your HITACHI laptop, please ensure both 'HITACHI' and 'Extensa 391C' are list on this page.

Work with:
ACER
  BTP-031,   91.43A28.004,   BTP-231,

HITACHI
  BTP-031,
Replacement for:
ACER
  Extensa 390,   Acernote 392,   Extensa 392C,
  Acernote 390,    Extensa 391C,   Extensa 394T,
  Extensa 390c,    Acernote 394,   Extensa 393C,
  Acernote 391,    Extensa 392,   Extensa 395T,
  Extensa 393,    Extensa 391,   Extensa 394,
  Acernote 393,    Extensa 392T,   Acernote 390a,
  Extensa 391T,    Extensa 395,   Extensa 390cx,
  Acernote 395,    Extensa 393T,
HITACHI
  Vision plus 5000,

Tips for Extending Battery Life
Cycle you battery

If you have a laptop with either NiCD or NiMH batteries fitted, allow them to go completely flat before recharging them. If you are going to use your laptop for extended periods of time on mains power remove your battery altogether and store it in a discharged state. Li-ion batteries are usually unaffected but we have seen that if you leave your laptop on mains power without cycling them then their useful life time is reduced substantially.
Screen

Turn the brightness and contrast-control down as far as you can stand it.
Turn off and/or Remove unneeded components

Turn off internal/external modems when not in use. Leaving your PC card modem plugged in can reduce your effective battery time by up to 25%. Remove PCMCIA cards when not in use.
Turn off AutoSave

This is somewhat risky, but if you’re careful to monitor your battery’s power level, you can avoid unnecessary disk accesses.
Disable helpers, wizards & other automatic features

Software functions that automatically format text, check spelling, and recalculate your spreadsheet all draw down power.
Use a disk-caching utility

Install a utility program like Norton Utilities or SmartDrive to cut down on disk-accessing time. The cache saves the most-often used or most recently used information to a special virtual memory cache. Then, instead of battery-depleting hard-drive accesses, the computer uses the information in the cache instead.
Clean Leads

Once a month, clean the leads (silver or gold metal strips on end of battery) with rubbing alcohol to ensure that your battery is making a good clean contact with the leads in your system.