Welcome to the Solar Collector
Brainstorming and Development Page!


 

Home

Hot Air Collector

Hot Water Project 1

Hot Water & Space Heating

Solar Electric

Solar Construction 101

FAQs

Best Collectors

Simply Solar
Register Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 2 of 2      Prev   1   2
TheBearF8

Registered:
Posts: 4
Reply with quote  #11 
Thanks all

The mixing of old and new cells got me thinking what ages a cell/battery the most

(A) drain a battery bank from 100% to 10% capacity then fill it back up, when demand from the battery bank is low daily. EG If daily/24hr demand is 8kWh. Have a total battery bank capacity of 12kWh

or

(B) drain a battery bank from 100% to 80% capacity then basically top up to full when demand from the battery bank is low daily. EG if daily/24hr demand is 8kWh. Have a total battery bank capacity of 330kWh

Which scenario A or B. Has a better battery health or battery/cell life span. Using li-ion batteries not lead acid sealed or flooded

Thanks again to your thoughts

Rick H Parker

Avatar / Picture

Registered:
Posts: 757
Reply with quote  #12 

(A) you would get about 2,000 cycles out of the batteries, (B) you would get about 12,000 cycles out of the battery. 

The other thing you want to look at is where your going to store the batteries. Li-ion is sensitive to heat, the cooler you keep them the longer they last. Down in a cool basement or a root cellar would make a big difference in life span over keeping them in a tin shed.


__________________
Rick H Parker
Kansas, USA
Electronics Engineering Technologist
TheBearF8

Registered:
Posts: 4
Reply with quote  #13 
Wow!
Had no idea the cycles would so so different  2,000 vs 12,000

Thanks Rick
Rick H Parker

Avatar / Picture

Registered:
Posts: 757
Reply with quote  #14 
The effects of Depth of Discharge (DoD) are nonlinear. If you reduced the average DoD to 10% you could expect over 100,000 cycles, baring no other damage that is. 

__________________
Rick H Parker
Kansas, USA
Electronics Engineering Technologist
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics