Hacker News new | past | comments | ask | show | jobs | submit login

Actually, I took apart a similar device, a single-use e-cigarette battery, and it turns out to be identical to the rechargeable version, except on the tiny PCB inside the chip for handling the charging from USB was absent. The battery was the same Li-ion rechargeable, supplied charged up for ~1 days usage. The economics of these cheap electronics are insane...

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact