Laptop battery life depends on a variety of factors. Typcially Dell has higher rated batteries.
Batteries plus carries all the brands of laptop batteries, the only thing is dell would be cheaper.
Dell has a rigorous qualification procedure by which all Dell batteries are validated to make sure proper function, performance and safety. Some non-Dell batteries are offered in the market place with claims of compatibility with Dell systems. Dell can not verify these claims, nor the safety of making use of them inside a Dell program. Dell strongly encourages our customers to utilize only Dell laptop batteries advertised as appropriate for their laptop model. Only Dell laptop batteries come with a 1-year warranty, are engineered for optimal safety and performance for Dell systems, and are supported by Dell technical assistance for the length with the warranty period.
In my experience, they are about equally good. Dell has a top of the line XPS where Toshiba has a similar high end laptop in the Qosmio
A good place to find replacement batteries for Dell laptops is eBay. It is possible to find batteries for less than $10, but they might not last as long as Dell-manufactured batteries.
The top selling laptop providers are hp, mac, acer, asus, toshiba, and dell.
Dell laptop power cords are generally only compatible with Dell laptops, as each brand of laptop has its own specifications for batteries and power cords.
Toshiba Laptops are one of the better ones out there as far as I'm concerned... Better than Dell & HP
TOSHIBA, after seeing many dell computers fail, i decided to get a toshiba. really reliable, much better price for the same processing power and such. do a little research into reviews and ratings and you will soon see the difference.
The Dell lithium Ion batteries have a slightly longer shelf life and last 10-15% longer than normal batteries.
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batteries who manufacturer by the companies like dell ibm or acer depends on the company or compatible batteries from china
The Acer Aspire 1, Dell Mini, and Toshiba netbooks are good choices.