go_away

Author Topic: charging two diffrent types batteries with one charger  (Read 2856 times)

0 Members and 1 Guest are viewing this topic.

Offline aaa3aTopic starter

  • Full Member
  • ***
  • Posts: 50
  • Helpful? 1
charging two diffrent types batteries with one charger
« on: March 09, 2020, 06:10:28 AM »
hi
i have a robot work with two batteries one for the microcontroller and low consuming power circuits (2x 3.7v 18650 battery in series with total 7.4v )
and one for the motor and power sucker stuff (6v/4ah sealed lead acid battery)

i've wired it as shows in attachmed  photo
i used toggel switch to switch between operation mode and charging mode

my problem is the 7.4 battery charge well but the lead acid still 2.4v
i left them to charge for 12 hours

the lead acid battery charging alone very well to 6.9v

is there a solution for this system and what is the right way to charge the 2 batteries

thanks



 


Get Your Ad Here