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The NRG Stem has a built-in power bank for charging devices on the go, and it's now crowdfunding on Kickstarter

The stem has integrated universal USB ports, that can charge your GPS, phone, Di2 and other devices while you ride, with enough power to give an iPhone a full charge...

Fledgling component brand NRG has designed a stem with a built in power bank, that can charge your devices with a universal USB port. It's now crowdfunding on Kickstarter, with a £190,000 target to bring it into full production. 

Weighing in at 240g, the NRG stem is made out of heat-treated aluminium, and there's an LED light indicator on the top to show you how much charge you have remaining. A rubber cap fits over the top of the USB ports when not in use. Using the NRG stem means you can keep your GPS, lights and phone amongst other things topped up on the go without having to carry anything extra and/or worrying about running out of juice. The reach is 103mm with a 5° angle, and the battery capacity of 3500MaH; enough to give an iPhone a full charge. To recharge the stem itself, you plug in the 2 metres long charge cable into the port on the stem. It's also fully patented, designed and manufactured in the UK. 


Although it's the first time we've seen charging via a stem, it's not the first instance of USB integration on a bike: way back in 2011 we reviewed the Tout Terrain touring bike that had a USB port fitted under its headset via a dynamo adapter, and Dave reviewed the Igaro D1 Mod 5 USB converter for dynamo hubs in December - but on first impressions the NRG stem looks like a wire and hassle-free solution, so we'll be following its development with interest. 

When we first caught news of the stem a year ago we didn't have pricing info, but a year on NRG have now launched the product on Kickstarter to bring it into full production. They're looking for a total investment of £190,000, and you can get one with a super-early bird backing of £160 (50 are available at this price). The early bird price is £175, and the RRP will eventually be £210. Check out their website here and the Kickstarter here

*This article was first published in February 2018

After cobbling together a few hundred quid during his student days off the back of a hard winter selling hats (long story), Jack bought his first road bike at the age of 20 and has been hooked ever since. He was Staff Writer at 220 Triathlon magazine for two years before joining in 2017, and reports on all things tech as well as editing the live blog. He is also the news editor of our electric-powered sister site eBikeTips. Jack's preferred events are time trials, sportives, triathlons and pogo sticking (the latter being another long story), and on Sunday afternoons he can often be found on an M5 service station indulging in his favourite post-race meal of 20 chicken nuggets, a sausage roll, caramel shortbread and a large strawberry milkshake. 

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