Source: Tom's Guide US | Keywords: squeezing, more, life, out, of, your, notebook | Themes: Business Notebooks
- 1. The Eight-Hour Battery Life Notebook
- 2. Battery Life As A Turnover Multiplier For Vendors
- 3. Battery Life Is Only The Second Most Important Purchase Factor
- 4. Battery Life Is Only The Second Most Important Purchase Factor, Continued
- 5. Intel Claims That The Display And Chipset Consume More Energy Than The CPU
- 6. A Brief Summation Of Battery History And Battery Types
- 7. Higher Energy Density: The Rechargeable Nickel Metal Hydride Battery
- 8. The Li-Ion Battery Isn't Perfect, Either
- 9. Battery Care And Preservation
- 10. Battery In The 'fridge?
- 11. Buyer Beware 1: Old Battery In A New Notebook
- 12. Typical Notebook Batteries
- 13. Frequently-asked Question 1: How Do I Determine My Battery's Capacity?
- 14. Frequently-asked Question 2: How Charged Is My Battery?
- 15. Frequently-asked Question 2: How Charged Is My Battery? Continued
- 16. More on this topic
2. Battery Life As A Turnover Multiplier For Vendors
The results of a recent poll conducted by Mobile PC EBLWG demonstrate that major players in this sector had better take the battery life problem seriously. This study involved 1,200 notebook users in the USA, Japan, German and China. It demonstrated that notebook users were ready to spend up to 20% more for a notebook, if that would result in longer battery life from a single charge. Interestingly, the same study also indicated that notebooks run exclusively from batteries only about one quarter of the time they're in use. Remaining work-related activity be it for standard users or power users is tethered to a wall socket as the notebook replenishes its battery charge.
Users also expressed fears of suddenly finding themselves with an empty battery totally devoid of charge. The study also found that a typical user is parked behind a TFT display from 20 to 40 hours per week versus more than 40 hours per week for a power user.
An Eight-hour Battery Life Is What The People Want
Another interesting result emerged from a study that Intel conducted in 2003 when end users and IT professionals were asked about the importance of long battery life for notebooks. They were also queried about how long battery life should be and whether or not it was technically possible.

The majority of users would be satisfied with notebook battery life of up to eight hours.
A large portion of the consumer population would also be satisfied with a battery life of five to six hours, but getting eight hours out of a charge would make them just that much happier. The results from this question when posed to professional IT users also shows a similar trend. In both cases, extending battery life beyond eight hours only makes a minor difference to the reported results.
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"Better still, Li-Ion batteries exhibit none of the memory effects associated with the other two types just named."
Neither do NiCad or NiMH batteries, of course, unless you're using them in a geosync satellite power system. With a charging system as smart as the one required for Li-ion or Li-polymer, NiMH batteries don't suffer from overcharge and the resulting voltage depression (what's generally mistaken for a "memory effect" in the association cited). I wouldn't be surprised to see some notebooks returning to NiMH, albeit the new low self-discharge types.