Laptop with reasonably bright screen and good battery life gets you pretty far. Currenly I'm sitting in the shade outside my workplace with Lenovo X230. Its 26

Laptop with reasonably bright screen and good battery life gets you pretty far. Currenly I'm sitting in the shade outside my workplace with Lenovo X230. Its 26 degrees celsius in the shade, which is cooler than the 30 inside my office (3rd floor, no air conditioning, even ventilation is shut off for repairs). The screen is an issue though, I'd much rather have the Lenovo W530 I had in my previous job. It was really nice when working without external displays and had very nice battery life to boot.