The Anker Advantage: Join the 30 million+ powered by our leading technology. Long-Lasting Power: Power small devices like remotes for over a year or keep toys and game controllers running for much longer than other brands are able to. Power Lock: An air- and liquid-tight seal keeps the power inside; until you're ready to unleash it Power Lock: An air- and liquid-tight seal keeps the power inside; until you're ready to unleash it.