"There are more than eight 0.1 volt steps between 0.6 and 1.5 volts, so, in grossly simplified terms, the Batteriser can extend operational battery life somewhere around a factor of eight."
Well that's me convinced.
http://www.pcworld.com/article/2928997/batteriser-is-a-250-gadget-that-extends-disposable-battery-life-by-800-percent.html
am i the only one who sees aproblem with that ? the battery gauge now reads 100% .. how will i know when the battery will get so low the batpoo will cut out ? i hope it has a proportional scaled output voltage so that the gauge in my Mac can accurately show how far from empty the batpoo+battery is or else my keyboard may suddenlNo it doesn't, and it's the biggest "gotcha" with the Batteriser that not many people talk about, certainly not Batteroo. The Batteriser renders the battery gauge on every product useless.i smell trouble.... expect lots of people complaining it cuts out 'all of a sudden' ... it showed 100% 2 minutes ago and now it is empty ....
Yep, people will throw it out instantly in disgust. That one fact alone is enough to sink the longevity and mass appeal of the product even if it met it's demonstrably untrue performance claims.
At the very least it should come with a warning saying it will render your battery gauge inoperative. all it needs is for someone to use it in a critical product and then they'll get their arse sued.
They can avoid this by saying not to use them on metered devices like they did with LED lights.
There isn't a single engineer on the planet that even remotely doubts the Batteriser will "work" as a boost converter and give you 1.5V output from a "dead" or "used" battery.
They can avoid this by saying not to use them on metered devices like they did with LED lights.
Yes, but they're not saying that, are they?
Not to mention the 9V versions they need to post out to everyone!!
Where are the other 362 comments?
I noticed something interesting in the JSON data for the IGG comments.
https://www.indiegogo.com/private_api/campaigns/batteroo-extend-battery-life-significantly/comments?page=1
At the very bottom:
"previous":null,"next":2,"current":1,"per_page":10,"count":1071,"pages":108
It only says 1071 comments. But on the page says 1433 comments.
Where are the other 362 comments?
Or is it just some IGG system thing?
There isn't a single engineer on the planet that even remotely doubts the Batteriser will "work" as a boost converter and give you 1.5V output from a "dead" or "used" battery.
I noticed something interesting in the JSON data for the IGG comments.
It only says 1071 comments. But on the page says 1433 comments.
Where are the other 362 comments?
Or is it just some IGG system thing?
I remember learning about batteries and internal resistances, open circuit vs on-load voltage etc back in Circuit Theory II or thereabout...
What's the odds of a University not teaching about those in electronics engineering course?
There isn't a single engineer on the planet that even remotely doubts the Batteriser will "work" as a boost converter and give you 1.5V output from a "dead" or "used" battery.
Well, I doubt it now, after the Indiegogo comment from one backer, that the voltage indicator on the Apple keyboard went from 39% to 87%, assuming 39% is still at a reasonable level above 1V (because otherwise the percentage would be wrong, because of the time left at this voltage), which is fine for many boosters (many can start from 0.9V and work below once running) and 100% is 1.5V or higher (because I would expect the meter to show 100% with fresh batteries). I have a Mac, so I could even use such a keyboard. Found a seller in Germany for cheap (EUR 40), well'll see.
Dave, if you have access to a Mac somewhere and if you want one, I can forward the keyboard to you for testing (I guess you will get a sleeve sooner or later). You could do a Garmin-GPS like test, but more professional, with multiple multimeters, one for the battery terminal voltage, one for the voltage after the terminal and one for the current: A servo motor which hits a key every some seconds, then measure the time until it dies. All automated by a simple Python script on a Raspberry Pi (with the help of the Raspberry Pi2/3 logging platform for Voltnuts). The servo can be controlled from the Raspberry Pi as well, without any additional hardware, as I demonstrated. Or maybe better, use an Arduino for controlling the servo and then use something like Processing to send commands to the servo, read the multimeters, create a nice diagram and detect the key presses. Would be a fun weekend project to program and setup.
Just one comment here. Fresh batteries typically have a voltage in the 1.6-1.62 V range
Just one comment here. Fresh batteries typically have a voltage in the 1.6-1.62 V range
Not when they're under load inside a device.
Depends on the load. In this context we're talking about the Apple keyboard (20-50 mA?), it shouldn't drop that much.
but I'm not sitting here for 30 minutes holding the batteries in with a pair of probes to find out.
They can avoid this by saying not to use them on metered devices like they did with LED lights.
Yes, but they're not saying that, are they?
I meant they will. Also there will be a warning about not using them in tight places. If they give enough warnings they may end up working only in butterflies, which I think has been the only successful use so far. This is really funny. Think of it, the only reported successful test so far has been with sex toys! After all there is "riser" in Batteriser.