Has anyone used a L-ION Makita 18v battery in a DIY bluetooth build?
I have 3 and one is acting up and not charging properly, so pulled it apart to notice a board on the top, which assume is a protection circuit. I have a small build i'm working on and wondered if anyone has done something like this using the materials available? there are 10x 18650 batteries all wired up and to be honest i only need 12v. If not i would still consider using 3-4 in series to get 12v.
Either way i would need some guidance on how to wire it up to my dc jack.
I have 3 and one is acting up and not charging properly, so pulled it apart to notice a board on the top, which assume is a protection circuit. I have a small build i'm working on and wondered if anyone has done something like this using the materials available? there are 10x 18650 batteries all wired up and to be honest i only need 12v. If not i would still consider using 3-4 in series to get 12v.
Either way i would need some guidance on how to wire it up to my dc jack.
If its not charging the charge/protection circuitry is kicking in because a cell or cells are dead/weak. Can you measure the individual voltages of the chain to identify the problem cell(s) (it must be 5S-2P arrangement)?
In general you never want to use or charge Li ion batteries without their protection circuitry.
In general you never want to use or charge Li ion batteries without their protection circuitry.
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