Even if your RV is equipped with a bank of house batteries, solar panels, and a generator, having a supplemental power source can be invaluable. Here are 9 reasons that ALL RV owners need a portable power station. 1. So you can stop tripping breakers and blowing fuses. Energizer. 30000mAh Power Bank, 22.5W Ultra-High Output, 20W Fast Charge to The New iPhones USB-C, 22.5W Smart USB-A Fast Charge to Compatible Android Devices. Triple Outputs (Black) (UE30016PQ) $4499. FREE delivery Thu, Jan 4. The Energizer UE 5057 5000mAh is a small, simple power bank that’s not too expensive and which can charge two devices at the same time. But how well does it work? We sent it to the Which? test lab to put it through its paces. Read our full review of this power bank to find out all you need to know. People guesstimate 2 hours for OEM general use, so that'd be 6 hours. I run Quest Games Optimizer for higher performance, which shortens battery life, but I don't care because power bank. Some people are going to far as a 20,000 mAh power bank in their pocket, but personally I'd prefer 2 x small 10,000 mAh to swap out if I needed that much. 20,000 mAh ultimate power capacity that can charge a standard smartphone up to 6 times. 2 USB-A output ports that can charge 2 devices at once. 2.1A rapid charging for all of your charging needs. The LCD indicator shows the battery level and charging status at a quick glance. 1 USB-C and 1 micro-USB inputs can recharge based on your convenience. A faulty charging cable can prevent power banks from charging devices. Check for visible damage and replace the cable if necessary. If there’s no visible damage, try using a different cable to charge the power bank. If the power bank charges, then the original cable was faulty and should be replaced. The Energizer Power Bank is a high-capacity portable charger designed to deliver fast charging and extended battery life. With its 10,000mAh capacity, it can provide up to 36 hours of extra time for smartphones, 12 hours for small tablets, and 8 hours for large tablets. 1 day ago · Best camping chargers at a glance. Best for overall: Anker 337 Power Bank (PowerCore 26K) - £39.99, Amazon. Best for short weekend breaks: Belkin 20000mAh Portable Power Bank - Black - £29.99 ZPutS.