Overview and Testing of Big Battery 12V 170Ah LiFePO4 Lithium Battery

LithiumSolar

Administrator
Staff member
Joined
Oct 8, 2016
Messages
2,385

Today, we will be taking an in-depth look at the 12V 170Ah LiFePO4 batteries that Big Battery has for sale. I will disassemble the battery to show how it's put together, then complete a capacity test to see if the specs match as advertised. This is one of two types of LiFePO4 batteries that we will be taking a look at over the next few weeks.

12V 170Ah LiFePO4 Battery... https://bigbattery.com/products/12v-lifepo4-power-block/?ref=13 (10% Discount Code "BATTERY")
24V 170Ah LiFePO4 Battery... https://bigbattery.com/products/24v-170ah-lifepo4-power-block-preorder-solar/?ref=13 (10% Discount Code "BATTERY")
175A Anderson Cables... https://bigbattery.com/products/anderson-sb175-connectors/?ref=13 (10% Discount Code "BATTERY")
BESTEK 2000W Inverter... https://amzn.to/3mwe0Qa
 

hbpowerwall

Administrator
Staff member
Joined
Oct 7, 2016
Messages
1,909
Great to see the unit was as advertised. Looks like a cheap instant battery.
 

100kwh-hunter

Active member
Joined
Mar 2, 2019
Messages
665
I did not see the whole video.
I am not surprised that the unit was as advertised.
All the lifepo Chinese cells are good, but if the cycle life of those cells is "just" 3500 or 3000 at 80% dod than there are second handed or minimum 1 year of age cells.
The new a grade are the ones with 4000 cycles left and thus a bit more expensive, if bought really new(younger than 6 months) you would pay double.
For this price considering for our use, they are very good for in a powerwall.

Best Igor
 

Overmind

Active member
Joined
Jan 16, 2019
Messages
412
Would be nice to see cycle testing. Many doubt the 3000+ cycles stated for most LiFePo4s.
 
Top