View Single Post
Old 10-09-2019, 07:11 AM   #13 (permalink)
RedDevil
Master EcoWalker
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,999

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 54.23 mpg (US)
Thanks: 1,714
Thanked 2,247 Times in 1,455 Posts
In one way LiFePO4 is even more sensitive than other chemistries. The cell voltage is very strongly tied to the 3.2-3.4 Volt range and varies little between 1% and 99% charged. So you can't walk away for a minute while all cells charging at 3.4 Volts per cell; once full it jumps to over 4 Volt very rapidly, where the damaging takes place.

My BMS starts balancing at 3.65 Volt per cell and shuts down charging at 3.85 Volt.
Charging a pack of 12 Ah cells at 3A, there's just a few seconds in between.
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gigameter or 0.13 Megamile.


For confirmation go to people just like you.
For education go to people unlike yourself.
  Reply With Quote
The Following User Says Thank You to RedDevil For This Useful Post:
aerohead (02-05-2021)