Some laptops (laptops) they have half or less battery life compared to what their manufacturers promise, according to a study by British consumer organization Which?.  
"Overall, we found that the manufacturers miss their claims not by a minute, but by hours. The most optimistic manufacturers exaggerate when it comes to battery life by 50% or above" notes the organization.  
The tests have been taking place since January 2016, and some Acer models were reviewed, of Apple, by Asus, by Dell, of HP, of Lenovo and Toshiba, with each test performed three times on each device.
 The tests carried out showed that only Apple's Macbook Pro actually had the battery life 10 hours promised by its manufacturers- with usage that included watching movies and accessing the internet via wi-fi.
 As an analyst noted, οι κατασκευαστές τείνουν να κάνουν δοκιμές υπό βέλτιστες δυνατές συνθήκες. «Οι μετρήσεις διάρκειας ζωής μπαταρίας σε καταναλωτικές ηλεκτρονικές συσκευές όπως τα laptops τυπικά γίνονται στις βέλτιστες δυνατές συνθήκες, που μεγιστοποιούν τις επιδόσεις» είπε ο Μπεν Γουντ της CCS Insight στο BBC.   Continue at source ...