Hi-Capacity batteries and AC adapters from Battery-Biz are the highest quality portable power products you can buy! The batteries are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure the maximum levels of battery safety, reliability and efficiency.This battery is intended for the following systems: Hitachi VisionBook, VisionBook +, VisionBook 133, VisionBook 4000, VisionBook 4140, VisionBook 4140X, VisionBook 4150, VisionBook 4150X, VisionBook 4350X, VisionBook 4360X, VisionBook Plus, VisionBook Plus 4000, VisionBook Plus 4140, VisionBook Pro 7000, VisionBook Pro 7340, VisionBook Pro 7590-002, VisionBook Pro 7630-001, VisionBook Pro 7630W98-001, VisionBook Pro 7650-001, VisionBook Pro 7755-001, VisionBook Pro 7755NT-001, VisionBook Pro 7775; Micron TransPort Trek2, TransPort Trek2 233, TransPort Trek2 266, TransPort Trek2 300 DVD.For a complete compatibility list please refer to the original manufacturer's web site.