From my testing with other gadgets I reckon 5 days to a week would be right on the money for the Pi, they run on the smell of an oily rag when it comes to computer power.
> On 21 Sep 2016, at 7:32 AM, Travis Siegel <tsie...@softcon.com> wrote: > > I want to get one of these, and rig it up in a case of some sort with my > raspberry pi. I wonder how long it could power the pi. Someone I saw online > built a laptop into a case, and used a battery similar to this one, and it > ran for about 2 days off of one charge of this battery. I'd have to think > that the pi would be good for a week or more on a single charge of such a > battery. I really need to look into getting meone of these things. I use a > power juice now, and it will run my pi for about an hour, which isn't a whole > lot, but it's enough when I need to be away for just a little while, and > still need access to a machine. > > > On Fri, 16 Sep 2016, Dane Trethowan wrote: > >> Review: RAVPower RP-PB14 Xtreme ? The Last Portable Battery You?ll Ever Need? >> August 27, 2014 >> RAVPower RP-PB14 Xtreme >> I?m starting to think I might have a problem. My interest in external >> batteries >> may be turning into a fetish, but these energy stores are important to our >> digital lifestyles. The latest electron pump to whet my appetite is the >> RAVPower RP-PB14 Xtreme. >> Xtreme is a clue to this units performance, this is one meaty power pack. >> Weighing in at over half a kilo and with dimensions of 18.5 cms x 12.4 cms x >> 1.8 cms, this isn?t going to fit in your pocket. But its huge capacity is its >> advantage and it?s still small enough to fit in pretty much any bag. >> The 23,000mAh 5v output will, for example, fully recharge an iPhone around 12 >> times, a Galaxy S4 around 7 times and even an iPad Air from empty to full >> twice over. In addition the battery can output a range of higher voltages to >> power netbooks, notebooks and laptops too. >> The Kit >> As well as the battery itself, the kit comes with 4 charger tips for mobile >> devices (Samsung, Nokia, mini and micro USB) as well as 2 x USB power leads, >> plus a range of 10 charger tips for laptops (see below) and a DC lead to hook >> them up. There?s also a felt carry case to pack it all into. >> RAVPower RP-PB14 Xtreme Kit >> Feel the Power >> The little LCD screen gives the unit an air of quality and shows the >> remaining >> power level of the cells (both visually in bars as well as a percentage >> value). In addition the USB symbol appears when charging through either of >> the >> USB ports. >> RAVPower RP-PB14 Xtreme LCD Display >> The upper aluminium body (plastic bottom half) helps with heat dissipation >> and >> there are 4 ports along the top edge of the case. From left to right, first >> is >> the input port, this is used to charge the battery from the supplied AC Mains >> charger (15-24v 2A) which will work around the world as it?s 100-240V >> 50-60Hz. >> It takes around 6 hours to fully charge. >> RAVPower RP-PB14 Xtreme Ports >> Next along is the USB 2 port, this is a 2.5A output that will charge an iPad >> at full speed as well as those other power greedy devices like the Galaxy Tab >> or Nexus 7. The USB 1 port is a standard 1.0A output for your iPhone, Android >> smartphone, Portable Game Console etc. Finally the right-most port is the DC >> Output for charging laptops and notebooks. >> Check the AC adaptor for your laptop to determine the voltage required, then >> hold down the single function button until the voltage value begins to flash. >> Press the button again to cycle through the output options (9, 12, 16, 19 and >> 20 volts). Once you arrive at the correct value leave it flashing for a few >> seconds and it will stop and lock to that output. >> Apple Magsafe Cord / CableThe 10 notebook tips included in the kit will >> connect the battery to most units from Acer, Asus, Benq, Dell, HP, Lenovo, >> Samsung, Sony and Toshiba. >> Being a MacBook household there?s an obvious omission from that list, no >> doubt >> because of Apple?s proprietary connector. However a quick search turns up >> these >> inexpensive Apple Magsafe and Magesafe 2 cords so it may be possible to rig >> something up for your Cupertino computer. But plug any Heath Robinson >> contraption into your shiny, expensive MacBook at your own risk. >> You can use both USB Smart Ports at once (3.5A max) and even simultaneously >> charge 3 devices by adding your laptop at the same time (4.5A max total >> output). The instructions allude to an 80% efficiency stating that the unit >> will ??consume about 20% of the total capacity, including power loss from >> circuit >> heat and voltage conversion?. >> RAVPower say the Lithium-Polymer cells employed by their unit are more stable >> and safer than Li-ion and they are good for over 500 recharge cycles. They >> are >> keen to point out the other safety features of this unit too and quote >> protection for overcharge, overvoltage, overcurrent, overtemperature and >> short >> circuit with auto-shut down where required. In normal use the unit will auto >> power off between 5 and 20 seconds after its been disconnected. >> Bottom Line >> We recently packed the RP-PB14 on a long family car journey and even though >> there was USB power available in the car, the rear seat passengers preferred >> to use the battery as it meant those (short) lightning and micro-USB cables >> weren?t as stretched and restrictive as they were when plugged into the car >> adaptor. >> The enormous capacity of the RAVPower unit would be especially useful on long >> flights. Although I?ve noticed there?s an increased risk of being pulled at >> airport security these days with a battery in your hand luggage. I?ve been >> stopped at the X-Ray on 4 out of the last 4 flights I?ve taken so they could >> take a closer look at this smaller battery. >> <br /> >> My daughter can seemingly drain any smartphone battery in just a few hours >> and >> as she?s starting university in a few weeks this is going to be the perfect >> device for her backpack. Popularity with her fellow IT students should be >> assured too when word gets out that she?s packing a power source that?ll keep >> multiple devices juiced-up throughout the day. >> The RAVPower Xtreme is sturdy, high-capacity energy source that will see most >> people through many days of travel, camping, power outage or whatever. If >> you?re >> after a beefy battery that?s flexible enough to charge most modern >> electronics >> then it?s certainly a worthy candidate for anyones shortlist. Available now >> for >> around ?80. >> ********** >> Those of a positive and enquiring frame of mind will leave the rest of the >> halfwits in this world behind. >> > -------------------------------------------- > This email was sent from my http://softcon.buyhostnow.com/ web hosting > account. ********** Those of a positive and enquiring frame of mind will leave the rest of the halfwits in this world behind.
