Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Pulse and glide battery issue/ ideas needed

brucepick · 09-16-2012, 11:13 PM

You can get small lead acids at electrical supply places. About half or a third of the size of a small loaf of bread. Take a look.

My approx 100AH is a lead acid marine deep cycle from WalMart, labeled 122AH at 1 amp draw. I call it 100 AH at "real" draw levels.

The other is a 40AH LiFePO4 lithium. I can safely draw about 50A from the lead acid and about 32A from the lithium. Those can stand drawing down to about 20% of capacity. Lead acid can be drawn down to about 50%.

Nicads and other types are not really an option. LiFePO4 is nice but $$$$. And needs its own charger built for that chemistry, and can't be safely charged by the alt either.

09-16-2012, 11:13 PM	#25 (permalink)
brucepick OCD Master EcoModder Join Date: Dec 2007 Location: Eastern CT, USA Posts: 1,936 Outasight - '00 Honda Insight Team Honda Gen-1 Insights 90 day: 54.18 mpg (US) Thanks: 431 Thanked 396 Times in 264 Posts	You can get small lead acids at electrical supply places. About half or a third of the size of a small loaf of bread. Take a look. My approx 100AH is a lead acid marine deep cycle from WalMart, labeled 122AH at 1 amp draw. I call it 100 AH at "real" draw levels. The other is a 40AH LiFePO4 lithium. I can safely draw about 50A from the lead acid and about 32A from the lithium. Those can stand drawing down to about 20% of capacity. Lead acid can be drawn down to about 50%. Nicads and other types are not really an option. LiFePO4 is nice but $$$$. And needs its own charger built for that chemistry, and can't be safely charged by the alt either. __________________ Coast long and prosper. Driving '00 Honda Insight, acquired Feb 2016.