Battery babysitter charging multiple cells?

Components & Accessories Power
1

Hello, I have been using a Battery Babysitter to charge a 6aH (PRT-13856) and 10aH (from Adafruit) battery pack. Both these battery packs are made of 3 cells and come with the standard JST connector that is on the Battery Babysitter. They both charge as they are supposed to. But the datasheet for the BQ24075 lists it as a single cell charger. I know there is an internal PCB in the battery packs. Because the cells are combined in parallel behind this PCB, does the BQ24075 only see and treat it as a single cell?

Also, could I splice two of these battery packs in parallel and have them charge on the same Battery Babysitter? I know they will charge twice as slow but would this be safe?

2

The BQ24075 single cell refers to cells in series (i.e. the LiPo voltage). That is to say it can only charge 3.7V (i.e. 1S); it cannot charge 2S (i.e. 7.4V) or higher. The cells on the batteries you list are in parallel to give you more current (at the same voltage of 1S).

3

Makes sense. I suspected that might be the case. Thanks for your help.