QTY (4) Vmaxtanks AGM 125ah EA 500AH TOTAL Vmaxtanks AGM for Solar Wind Power Emergency Backup Generator PV panel or Charger 12V Battery QTY &lt;4&gt; 13"*7"*8.7"h Heavy Duty 12V AGM DEEP CYCLE BATTERY Charge using AC, Solar or Wind Power Float Service Life span of 8 to 10 years AGM with 99% recombination capabilities; no dangerous fumes or gases. Go to our Amazon "bargainshore strorefront" for our "VMAX Solar" selection.