Optima YellowTop deep cycle 12 V batteries can help power your passion for Amateur Radio! Every ham operator needs a plan for emergency power. Optima YellowTop AGM batteries can be quickly recharged, operate over a broad temperature range, and their ability to recover from the deepest discharge approaches that of wet NiCds, but with less maintenance and a lower life cycle cost. Plus, Optima’s Spiralcell technology and sealed construction make them a good fit for auxiliary power sources for emergency communications, because they’re safe for indoor use with your sensitive radio equipment. They offer two times longer life and 15 times the vibration resistance of standard lead-acid batteries, plus they are spill-proof and powerful. What’s your plan for backup power? For an effective emergency power system, be sure to include Optima YellowTop deep cycle 12 V batteries. Show Less