Even though Apple’s iPhone chargers keep getting smaller and easier to transport, it doesn’t change the fact that we will inevitably forget them at home just when we need them most. (We swear, that red battery symbol sometimes makes us feel like we have failed at life!) Thankfully, now there’s a backup option that’s cheaper than buying those extra chargers, and can live in your bag or even your wallet—the ChargeCard. The USB/iPhone charging cable is rightly named after our favorite way to pay, because it looks exactly like a thick credit card. Just plug it in to your iPhone and you’ll be back in business! Right now, the ChargeCard is available when you pledge $18 to the start-up project, but they will officially go on the market in September and cost $25 a piece.