Re-purposing Lithium-Ion battery pack for another project?

Thread Starter

boonxiong

Joined Oct 17, 2011
52

Thread Starter

boonxiong

Joined Oct 17, 2011
52
say I want to drop the voltage down to 12v. Can I just put in a voltage regulator to drop the voltage and then measure the voltage at the battery to make sure it doesn't go down below a certain voltage?

I am wondering if doing this will harm the battery as there are 4 pins (C- T ID C+) at the battery. I'm not sure if all the pins are supposed to be used or can I just do what I described above?



Thanks
 

Alec_t

Joined Sep 17, 2013
10,698
Can I just put in a voltage regulator
Again, it depends on the current the app calls for; also on the rating of the regulator.
I'm not sure if all the pins are supposed to be used
The manufacturer wouldn't have put them there if they weren't to be used. You need to research their purpose. I'd guess (but could well be wrong) that the C- and C+ relate to charging and T relates to a temperature sensor. Over charging or over discharging the battery could damage it, perhaps catastrophically.
 

ian field

Joined Oct 27, 2012
6,539
I have a 40v lithium ion battery pack: https://www.snowjoe.com/products/snow-joe-sun-joe-ion-ecosharp-40-v-4-0-ah-lithium-ion-battery?variant=27136281157&gclid=CjwKCAjwoKDXBRAAEiwA4xnqv8zDUV8CY6-uIphsoPeI1pdj1MFaH80GqwTYWPFkSBZK5wnY58wnbhoCqG0QAvD_BwE
that is just sitting around now that winter is over.

Can I re-use the battery for a side project if I connect the - + terminal leads to my application? Will this harm the battery?
What uses that voltage? - you probably need a buck converter to step it down to a "standard" value.
 
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