Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Most modern ones use a single lithium-ion or lithium ion polymer (lipo) cell, at least voltage-wise; they may have a pack with several parallel cells, with some types.
If it charges from a USB connector, the battery is highly likely to be a single lithium cell, voltage-wise.
So, probably a "3.7V" nominal battery, 4.2V at full charge & down to somewhere around 3.3V fully discharged.
Charging more than one in series add some complications and safety issues that add cost and complexity, plus needing a higher voltage charger system, so it's usually avoided if possible for things that do not need higher voltages.
Older ones used NiCd or NiMH batteries, with some number of cells in series.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
