Insides of jan 2022 CHINS and Zooms 12v 100ah

Crunchtime2k

New Member
Joined
Jan 14, 2022
Messages
6
Based on wills older video stating they were exactly the same i had one of each ordered, sadly they are not the same , i suspect same factory but somewhere they changed designs slightly to cost optimize.

the zooms appears to balance better and will accept up to 15v and tested at 102ah.

chins is somewhat poor in balance and disconnects above 14.36v , still working on test numbers.

pics attached. I will build a 24v system with these cells and a daly bms.A277FCD8-5161-4BAA-AF75-26B961CFAB5D.jpegE953A3CB-2C27-4F8C-8B1C-7D87962E051F.jpeg98B2D7CA-D862-4008-8140-9B41433132CF.jpeg
 

eXodus

Photon Sorcerer
Joined
Jul 27, 2020
Messages
968
the zooms appears to balance better and will accept up to 15v and tested at 102ah.

chins is somewhat poor in balance and disconnects above 14.36v , still working on test numbers.
15V would worry me personal more then 14.36V

14.4 - 14.6V is accepted by many as upper charge limit.

Many batteries need a few cycles to fully balance out the cells.
 

curiouscarbon

Science Penguin
Joined
Jun 29, 2020
Messages
2,305

1642261492002.png
 

electrongeek

New Member
Joined
Sep 18, 2021
Messages
5
I would like to understand how the CHINS batteries cell balance. From what little I have read, they do it when the battery is somewhere above 14.0V, and do so passively. How quickly do they balance? Has anyone tested by drawing a single cell down, and then measuring the balance current vs voltage? I have three of the CHINS 100Ah batteries in my sailboat, and am trying to understand the best way to keep the cells in balance.

Thanks for any info, or a pointer in the right direction!

Chip
 

eXodus

Photon Sorcerer
Joined
Jul 27, 2020
Messages
968
I would like to understand how the CHINS batteries cell balance. From what little I have read, they do it when the battery is somewhere above 14.0V, and do so passively. How quickly do they balance? Has anyone tested by drawing a single cell down, and then measuring the balance current vs voltage? I have three of the CHINS 100Ah batteries in my sailboat, and am trying to understand the best way to keep the cells in balance.

Thanks for any info, or a pointer in the right direction!

Chip
The CHINS got a BMS which does all that for you, no matter the state of charge. Just regular charge them. If you build your battery yourself different story. But the pre built ones are usually somewhat good matched.

 

electrongeek

New Member
Joined
Sep 18, 2021
Messages
5
The CHINS got a BMS which does all that for you, no matter the state of charge. Just regular charge them. If you build your battery yourself different story. But the pre built ones are usually somewhat good matched.

Yes, that is a great treatise by Rod Collins. I am interested specifically in how and how well the CHINS/Enjobot/AmpereTime BMSs do ther cell balancing.

Chip
 
Top