what battery module i use?

[nico69008]

Hello, i have a battery lithium samsung 3.7v 2500mah, and i want to charge with modulebut i don't know what module choose for security charge, there is too model, one http://s.aliexpress.com/amiAFrAb?fromSns=Copy to Clipboard
(from AliExpress Android) and one http://s.aliexpress.com/iYFNZRfm?fromSns=Copy to Clipboard
(from AliExpress Android) i seen some people take a modul 4.5 to 5.5v and they have a 3.7v battery lithium and im suprising because its look like more 4.5 to 5.5v for a 3.7v battery. Can you tell me the difference between and what model chose? Im afraid to exploding or burn battery. Thank you.

[rodocop]

both are TP4056, and both will work to charge the battery. They will not boost the voltage, so if you want it boosted to 5V you will need a separate voltage booster.

For a lot of cases you do not need to boost the voltage, so it it up to you. As for the differences, I believe the first one you posted has a built in protection circuit, while the second does not. Which shouldn't make too much difference since the battery itself should also have protection built in.