While most aspects of phones improve with each new model, one aspect that often doesn’t improve is battery life, which means a power bank can be a very useful thing to have. The question then is which to buy, but with this article we’ll help guide you through that, with a particular focus on RAVPower. RAVPower is a fairly large name in power banks so you might well be considering one of its products already, especially if you’re reading this, and they’re generally a good option, but there are some things to consider when deciding whether to buy a RAVPower power bank and when deciding which to buy. body .hawk-widget{–trd-blue:#2f6e91;width:100%;letter-spacing:normal;}._hawk.subtitle~.hawk-widget[data-widget-type=price]{margin:16px 0;}@media (min-width:600px){._hawk.subtitle~.hawk-widget[data-widget-type=price]{margin:0;min-height:128px;float:right;clear:none;width:50%;}.fancy_box_body ._hawk.subtitle~.hawk-widget[data-widget-type=price]{float:none;width:100%;}}.icon~.hawk-widget{clear:both;} The majority of RAVPower’s power banks come in a choice of black or white, though quite a few only come in black, as they’re seemingly designed to blend in rather than stand out. Howev...