Ken, KA6KEN, has an assortment of USED 12V 7AH and 35AH SLA (sealed lead acid) batteries for sale.
12V 7AH USED batteries: $10
Over 200 USED 12V 7amp-hour batteries Various brands and 2-4 years old (mostly 2.5). All measure over 12V (they were kept charged) and have an internal impedance of 18-25 milli-ohms. We can load test the battery on the spot when you come by. These batteries sell new for $25 each. We are selling them to HAMS ONLY right now for $10 each.
12V 35AH USED batteries: $20-$35
USED, various brands and 1-4 years old. All measure over 12V (they were kept charged) and have an internal impedance of 5-15 milli-ohms. These have also been load tested at 100A. These batteries sell new for over $100 each. We are selling them to HAMS ONLY right now for $20-$35 each (lower internal impedance = higher cost).
Contact: Santa Barbara Electronics near the SBA Airport Tower at 1503 Cook Place or call 805-681-2524