1
\$\begingroup\$

My PCB includes Li-ion charger (3.7 V) circuit with BQ25060. BQ25060 is to charge single Li-ion battery according to datasheet.

I bought new LiPo battery (1S, 3.7 V, 1550 mAh) but, there is not information about LiPo battery in BQ25060 datasheet.

Is it safe to charge a LiPo battery with a Li-ion battery charger circuit? If I can't charge, can someone explain why?

https://www.ti.com/lit/ds/symlink/bq25060.pdf?ts=1619636089137&ref_url=https%253A%252F%252Fwww.google.com%252F

\$\endgroup\$

1 Answer 1

0
\$\begingroup\$

The recommended upper voltage limit is 4.2V for Li-Ion (including "Li-Po"). One also needs to ensure that the current is appropriate for the battery's capacity. The recommended charge rate for Li-ion is ~0.5C, meaning that a battery with a capacity of X Amp-hours should be charged at X Amp / 2 (or less). The datasheet for your charging chip shows a maximum programmable output current of 1 Amp, which is more than the maximum permitted for your 1.55 Amp-hour battery.

\$\endgroup\$
2
  • \$\begingroup\$ Thank you for your comment. I understood that Recommended charge current should be 1.55 Amp. But, it wouldn't be a big problem If if I charge it longer time with 1 A, right? Or, Should I buy new lipo battery 1000mAh ? @FrontRanger \$\endgroup\$
    – fafeyto
    Apr 28, 2021 at 20:17
  • \$\begingroup\$ Correct. Also, some batteries are overrated on capacity, so 1A on your nominally-1.55 Amp-hour battery gives you some safety margin and is not far from optimal. \$\endgroup\$ Apr 28, 2021 at 20:21

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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