Good, then you will be safe.I will be busy in gardening. Hehe
A Lithium rechargeable battery protection circuit disconnects the load if the voltage of a cell drops to about 3.2V. If the voltage drops lower then the cell will probably catch on fire the next time it is charged. A battery charger IC senses that a cell has a voltage lower than normal and begins charging it with a low current to avoid a fire. If it does not begin charging or if it develops a short circuit then the charging is terminated with a warning indication.Will battery explode with charging voltage up to 4.2V, then can't use this (above) circuit and monitor its charging voltage mannually and disconnect after it reaches 4.2V?
The circuit you found does not sense voltage so it will cause a fire if it tries to charge an over-discharged cell.
Be careful. Another thread has a Chinese ad posted for FAKE protection circuits that look identical to the REAL protection circuits on some Lithium cells.
When will you begin gardening?
It is Korean and looks identical to the FAKE one. It might protect but I do not think it is a battery charger circuit.But almost every Li-ion cell has its own built-in tiny chipset look like this (uploaded below, sorry for bad pic. It was a round shape Li-ion cell by LG). Is it a Li-ion charger chip you were talking about? Then can I apply any supply of 5V in the chip then will it limit everything needed for its Li-ion cell?
My toy helicopter has a tiny protection circuit on its tiny Li-Po battery something like that.
Two laptop batteries I opened had one battery system protection and balancing circuit.-But I think each cells inside laptop battery pack has no its own differents chip. I guessed all cells have single chipset, called battery system circuit.