Originally Posted by Ohiobrits
Hey, I started with a 220AHr AGM system which worked OK for a while even for light use of a Microwave and coffee maker and the usual 12V
users. To run the A/C however is a completely different ball game....
The batteries I used are CALB CAM 72FI cells. They are very popular in the electric vehicle market. You need 4 of the 3.2V cells to make a 12.8V 72 AHr battery. They cost about $100 per cell plus BMS, busbars etc. So for a 288 AHr pack (batteries only
, 16 cells) would be about $1700 and weight only 68 lbs. Expect to spend another several hundred dollars on a BMS, contactors, class H fuse etc. Certainly not cheap but by Lithium battery standards not bad.
Yeah and when I informed my wife that the size was not for running the A/C she did not like that very much until I told her the price but she has been looking for small portable low draw A/C units and understands BTU now.
Looks like LIs are running about $10.00/ah with BMS built in. Just priced out a 200ah one and it came in a little over 2K. I will check into the ones you talk about and see what price they have on them. I hear the 90ah batteries are hard to get right now. Thanks for the info..