battery harvest

Tarsun

Member
Joined
Oct 12, 2020
Messages
35
new (to me) batteries to harvest.
this is just one of each. i have 3 - 5 of each battery here.
not crazy like most of the members here.

battery.jpg
 

Blackgolem

New member
Joined
May 18, 2021
Messages
7
I'm new as well but have had some experience with these dumb batteries and hope i grow in my understanding. What's your issue? maybe helping will help me too. I like so many others purchased hoverboard batteries that were cheap at the time so I could diy a escooter pack but have found some are only 1200mah not 2200mah and I'm trying to build a 48v 20ah battery. and I'm wondering the damage mixing will cause or if pack will just die sooner so again I ask what's your boggle?
 

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floydR

Well-known member
Joined
Aug 23, 2017
Messages
1,150
wolf, offgridinthecity, daromer,hbpowerwall, lithiumsolar and many others have large powerwalls. Wolfs build thread is great stressing the inportance of checking IR of each cell. comparing it to data sheets which sometimes don't have the IR listed then you need to go by the chemistry of the cell. Wolf I believe has a list of the different acceptable IR for the different lithium chemistries. really cuts down on testing cells which are bad and which lead to early battery pack failure.

Later floyd
 

Blackgolem

New member
Joined
May 18, 2021
Messages
7
wolf, offgridinthecity, daromer,hbpowerwall, lithiumsolar and many others have large powerwalls. Wolfs build thread is great stressing the inportance of checking IR of each cell. comparing it to data sheets which sometimes don't have the IR listed then you need to go by the chemistry of the cell. Wolf I believe has a list of the different acceptable IR for the different lithium chemistries. really cuts down on testing cells which are bad and which lead to early battery pack failure.

Later floyd
Thanks floydR
 
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