fixing the maximum charging current of the battery for very small batteries

Stefan Lintner

Hi Team,

I am looking for a solution to fix the maximum charging current of the battery for very small batteries like Panasonic ML6xx.
What would work here?

BR,

Stefan

over 3 years ago

0 Nick Brylski over 3 years ago

TI__Mastermind 19195 points

Hello Stefan,

Could you share the spec for the battery? Recently had a similar question on this topic here: Battery charger for solid state lithium thin film batteries - Power management forum - Power management - TI E2E support forums

thanks,

Nick

0 Stefan Lintner over 3 years ago in reply to Nick Brylski

TI__Expert 5095 points

Hi Nick,

please see Panasonic ML621 ast-ind-174496.pdf (panasonic.eu).

It has a very low maximum charging current
Charging Specification for ML Series_AAA4000PE17.pdf (panasonic.eu)

This is a solar application.
What would be the best fit here?

BR,
Stefan

0 Nick Brylski over 3 years ago in reply to Stefan Lintner

TI__Mastermind 19195 points

Hello Stefan,

This cell has a max charging voltage of 2.8-3.2V, we do not have any dedicated charger to support this. From the 2nd document you linked you can use a 5V supply or 3.1/3.2V regulator to charge the cells.

Best regards,

Nick