View Single Post
Old 10-31-2011, 12:25 AM   #32 (permalink)
ncwa
www.howtobuildahybrid.com
 
ncwa's Avatar
 
Join Date: Oct 2011
Location: California
Posts: 20
Thanks: 1
Thanked 3 Times in 3 Posts
Headway LiFePO4 Starter Battery

I pulled my 36lb lead battery out of my ‘66 Mustang and replaced it with a 16 Ah custom Headway LiFePO4 pack and BMS (total weight of 4 lbs!). This was a great solution but only worked well for about a month. Over time the battery started to loose cranking amps and eventually it would not start the car. At the time I was having a little bit of trouble with my low voltage relay so I might have dropped below the 2V min limit. I have since switched back to lead. However rather than the original 90 Ah battery, I am using a smaller 45 Ah 19 lb battery. This has been working well but I do keep a close eye on its charge. I think this would work for a smaller engine in a warm climate. (As a disclosure, the Ah rating of my battery is not as critical as I also have a 25 amps coming from my DC/DC converter and I can practically start the car with my e-drive if needed)
  Reply With Quote