1
\$\begingroup\$

Is it possible/save to charge a 3.7V Li-ion Battery with a 5V battery charger like this one: https://www.amazon.de/gp/product/B0191EVW0C/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Additional question: Would this be sufficient for an Arduino Pro Mini 5V using the VCC Pin?

Thanks!

\$\endgroup\$

closed as off-topic by Nick Alexeev Dec 11 '16 at 19:50

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design." – Nick Alexeev
If this question can be reworded to fit the rules in the help center, please edit the question.

  • \$\begingroup\$ I would suggest not mix battery chemistries. That said, what is the "Akku" part of "Lithium-Akku" mean? Is this German for something? \$\endgroup\$ – st2000 Dec 11 '16 at 14:19
  • \$\begingroup\$ Post this question to the Amazon supplier. EE.SE isn't his volunteer application support. \$\endgroup\$ – Nick Alexeev Dec 11 '16 at 19:49
1
\$\begingroup\$

Yes, this charger is okay for a single 3,6-4,2V li-ion cell. An ATmega328 will run fine at this voltage when you obey the clock speed limit (section 29.3 of the datasheet). Make sure to measure battery voltage using the Arduino, so you don't discharge the battery too deep.

\$\endgroup\$

Not the answer you're looking for? Browse other questions tagged or ask your own question.