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I am attempting to build a small 4xAA USB charger to use while on long flights so that I can watch movies. I notice that the wall charger is rated 5v 1000ma. I wonder if anyone has any clue what the Kaiser draws at full processor load. I can make a 4x AA charger with a 1000ma capacity, but if i could get away with something like a Minty Charger(2xAA, maybe like 500ma), I would, as the plans are there, and it would save me 15 bucks for a switching voltage regulator.
Has anyone done any work to this effect, and would they mind sharing their measurements?
Thank you in advance,
Ben
use batterystatus and check consumption when watching a movie or something
I will certainly check that, thanks!
Also does anyone know whether the kaiser has and odd charging tendedcies?
My plan basically calls for 4 aa batts wired in series to provide 6v, into a 5v switching voltage regulator, and out to USB. Will this be something that will work, or are there any odd little caveats i need to worry about?
Ben
The USB spec calls for a max of 500mA at 5V. Since the Kaiser can charge off of USB, then that should work.
I have a back ground in basic electronics, and building something like this would be right up my ally. But when I can find just what you want at a price like this>>
http://www.thepocketsolution.com/PSI-42555.html
I can't see any reason to bother building my own. I use this vary one, for just the same reasons you want one. And it works great.
GWelker62 said:
I have a back ground in basic electronics, and building something like this would be right up my ally. But when I can find just what you want at a price like this>>
http://www.thepocketsolution.com/PSI-42555.html
I can't see any reason to bother building my own. I use this vary one, for just the same reasons you want one. And it works great.
Click to expand...
Click to collapse
Wow! I suppose I should have done a little more research first That charger costs the same as a decent switching voltage regulator.
Does that thing look like it's easy to open up? I may wish to modify it slightly so that I can charge other USB devices off it. I also probably want to repackage it into something fun.
Thanks for letting me know about this charger... You have saved me a lot of soldering
Ben
edit:
http://www.thepocketsolution.com/PSI-36223.html
I'm scratching my head re this one. The tilt and the kaiser are, with very few exceptions the same phone. I would imagine that the battery chargers here are the same too, though this one is a couple bucks cheaper. The AAA model is only 10 bucks... I imagine that all these things are is a voltage regulator and an LED... if i am gonna rip one apart anyways, is there any reason i couldnt get the AAA model, tear it up, jack 4 AA batteries to it, and get all the benefits of the 15 dollar model, for 10? Im not really penny pinching, though if i decide to repackage the whole deal anyways, might as well save the 5 bucks and buy a USB jack
ben
with the cost of geting the parts, you can buy one for about USD 10.
kms
You might want to check that giving the phone 5 volts will actually put it into charge mode. I believe the mot razar won't charge off the USB unless it first communicates with the computer. Don't know though, I only borrowed the phone for a week when traveling for work.
As for power consumption, I took a 10 hour trip yesterday. Bought a USB car charger and used the data cable that came with the phone. I plugged it in and it went into charge mode. Running tomtom and such didn't charge the battery to any meaningful extent while it was plugged in. Fortunately, it didn't drain the battery either.
Maybe the phone knows the diff between USB and an OEM charger, and draws power accordingly (500mA for usb, 1 amp for OEM charger).
Edit: the car usb thing I picked up is rated for 5v +-.5 volt and 1 amp output (says the sticker anyway). Does the job I was hoping for and was cheap (6 bucks at fry's).
Nice!
I think im gonna order 2 of the battery chargers linked above. one i will keep stock (i leave for spain in a few weeks and need one to work)
the other i will rip apart and see if i can do something fun and exiting with it. I think i have an empty altoids box around somewhere.... the one i used to hide smokes from the parents in when I was a kid....
I like breaking stuff!
Ben
Note that the Tytn II's charge circuitry may require more than 500 mA if the battery is sufficiently discharged. In such conditions, a 500 mA charging current won't actually charge the battery. A 1000 mA charging circuit should be sufficient, as that matches the device's rating as specified in the manual.
Be real careful..
Be careful taking any home built electronics on a plane in these days since 9/11.
A girl in USA got done for having a battery and LED on her t-shirt in an airport and wasnt even flying...
id be amazed if you were allowed to take a home-built circuit onto a plane, esp. in the USA
just saying
g
pontifex33 said:
edit:
http://www.thepocketsolution.com/PSI-36223.html
I'm scratching my head re this one. The tilt and the kaiser are, with very few exceptions the same phone. I would imagine that the battery chargers here are the same too, though this one is a couple bucks cheaper. The AAA model is only 10 bucks... I imagine that all these things are is a voltage regulator and an LED... if i am gonna rip one apart anyways, is there any reason i couldnt get the AAA model, tear it up, jack 4 AA batteries to it, and get all the benefits of the 15 dollar model, for 10? Im not really penny pinching, though if i decide to repackage the whole deal anyways, might as well save the 5 bucks and buy a USB jack
ben
Click to expand...
Click to collapse
I can't see any difference in these two. I've had this one for over a year and half. I used on the 8125, the 8525, and now the Tilt.
As far as a AAA ver a AA, since the voltage is the same between the two, then it is only a question of mAh capacity.
I have one thing to say if your coming into America with some home made electronics your going to be thrown in Jail ...
ripnetuk said:
Be careful taking any home built electronics on a plane in these days since 9/11.
A girl in USA got done for having a battery and LED on her t-shirt in an airport and wasnt even flying...
id be amazed if you were allowed to take a home-built circuit onto a plane, esp. in the USA
just saying
g
Click to expand...
Click to collapse
I've actually taken a suitcase full of half built circuit boards and electrical components as carry on (half finished school project). They didn't even raise an eyebrow. As long as it isn't connected to something that looks like a bomb, I don't think they care.
thanks, i surmised that based on some other devices i have. I'm not too concerned as the battery will never (hopefully) get critically low. I'd like to jsut keep the thing running for ~9 hours while running either GPS or a movie... I hate plane rides, and i need something to do to entertain myself. I'll see what the charger mentioned above can put out. I just ordered two, and we'll see what it looks like... I'll write a review when i have had time to play with it a bit.
I've had Archos portables for years and it also has a 5V input. A simple 4 cell pack using 2300-2900 NiHi AA batteries in series will easily power these devices for over 10 hours straight. What's nice is that you don't need any regulator at all, just don't use alkaline batteries in it as you'll be at 6V. I carry a very small 4-cell charger to charge the cells. Works great for long travel. I took an iPod version with battery fuel gague, stripped out their power supply and just kept the power switch and fuel gague circuit. This costs more but works really well and looks good too.
So this thread is of some use to others: here are some data that i collected regarding current draw:
Locked with the screen off, no apps running: 1-4ma
TCMP playing a movie fullscreen: never more than 350ma
TCMP Playing in background with tomtom navigator 6 running: 416ma
all done in flight mode with the backlight set to the middle.
Can you you do a worst case test for current draw?
Turn on GPS, bluetooth, Wifi, backlight max and not flight mode.
Hi Guys,
Anyone tried Solar Powered Battery Chargers?
Looking at this one here :
source : 6000 mAh Solar Powered Mobile Power Extended Emergency Battery - Obostore
I'm looking fior the same. I bought recantly GOAL ZERO Nomad -7. Instead of charging it drains the power of my Note-2. I guess it is because of the non-standard pin-out (11 pins), so this is the one I would definitely not recommend.
Arthur
SINGAPOREAN said:
Hi Guys,
Anyone tried Solar Powered Battery Chargers?
Looking at this one here :
source : 6000 mAh Solar Powered Mobile Power Extended Emergency Battery - Obostore
Click to expand...
Click to collapse
I haven't seen any positive reviews about any solar powered chargers. The problem is that you need to apply voltage (bias it) in order for it to work. Like those solar power panels on the roof of people - if you loose a power to the house, they will not work So they might be draining instead of charging lol!!!
Don't know for sure how it works and if it works and how efficiently. So if anybody has any real life experience, please chime in. Most of the big name external battery vendors don't want to carry this product. I only seen it on ebay and Aliexpress.
I personally haven't tried one. From what I've seen about them, they're very fast, and can be nick-picky about the angle to the sun. On top of it, you'll probably need to check what's the output versus what the phone needs to change.
I think you're probably better off finding some kind of crank mechanism and use that to change the phone. Plus, you'll get a little work out too; you'll live longer to enjoy your phone, 8)
I have a voltaic that I use when camping or on extended hikes. It comes with a 3000mah battery. I haven't used it on the Note2 yet, but used it a lot with my Fascinate. The battery works fine as backup power, though it charges slowly and the phone pretty much has to be off for it to be effective. It takes most of a day of full sun to recharge the contained battery. It's ok if you're going to be away from power for a week, but for less than that I think just an extra battery or two fully charged would work better.
I think we just need to find or build one that supports 2.1 amps (ideally) but anything over 1amp should do something.
willfck4beer said:
I think we just need to find or build one that supports 2.1 amps (ideally) but anything over 1amp should do something.
Click to expand...
Click to collapse
I have one I found at Best Buy a couple years ago. It's a single amp box, so charges my Note II very slowly. I've used it on my bike when I'm out on rides. I have a mount for it and my phone. While riding, I use bluetooth headphones. It does work, but like someone else said, there needs to be one with 2.1 amps.
I as well have a Nomad 7, but mine charges my note without issue, although I will admit, it is impractically slow.
I bought this couple of months ago, charging the phone is a wii bit slow but it works like a champ!
http://www.ebay.com/itm/Opteka-4000...iPad-iPod-Android-Phone-Charger-/370665663271
I wouldn't mind if the solar power was a "backup" to a regular external battery, but if all it did was solar I wouldn't be interested.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta
WICKED... just stumbled across this on ebay. If you are a roll your own DIY type and want to charge a rapid charge device like Note2 or a tablet or something, this might be a great thing to look at.
http://www.ebay.com/itm/DC-DC-5V-36...018?pt=LH_DefaultDomain_0&hash=item2c700c47c2
I, personally, don't like the mini-usb connector... seems kind of goofy. I'd prefer just two wire terminals to connect solar panels to.
But yeah, if you've got high voltage solar setup... e.g. anything between 5V and 36V and want to have a clean, regulated 5V usb compliant output, this would likely be your guy. I'd also want to make sure it really does work with note2 - in terms of negotiation of currents higher than 100ma. YMMV FWIW
AND if you don't need note2/tablet 2A...
this guy seems like about the right fit.
http://www.ebay.com/itm/DC-DC-12V-2...965?pt=LH_DefaultDomain_0&hash=item4d0c738c65
We heard rumors that it'd have wireless charging and now the Motorola Site doesn't list it on the Droid Turbo Spec Site.
:crying:
Juliann826 said:
We heard rumors that it'd have wireless charging and now the Motorola Site doesn't list it on the Droid Turbo Spec Site.
:crying:
Click to expand...
Click to collapse
It would be nice. I have an N7 but haven't bought a charging pad yet because I didn't feel I'd get enough use from it. My N7 battery easily lasts me a full day and I just throw it on the charger at night. No big deal.
I use a Moto X right now and tether my N7 to it on my daily bus commute (~2 hours each day) and I usually need to give the battery some juice before I leave work to have enough for tether on the ride home and the remainder of the evening.
When I get the Turbo, it will easily last a full day. I don't think I'd ever really need the full two days of battery life, but it would be great for long days. My Moto X right now can't make it through an entire day with my usage. I know I'm probably above the bar in SoT (usually 3.5-4h), but I average about 13h, according to GSAM over the last 8 months. Could use a nice big battery to keep me going for 18-20 hours.
I guess it does have wireless charging...
The new DROID comes with a turbo charging feature so when you’re low on battery, a 15 minute charge can get you up to 8 hours of use. DROID Turbo comes with the Motorola turbo power charger in the box at no additional cost. And for added convenience, the new DROID is wireless charging capable.
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Click to collapse
Source: http://www.verizonwireless.com/news/article/2014/10/a-new-droid-experience-arrives-in-48-hours.html (in the "Endurance" section)
fury683 said:
I guess it does have wireless charging...
Source: http://www.verizonwireless.com/news/article/2014/10/a-new-droid-experience-arrives-in-48-hours.html (in the "Endurance" section)
Click to expand...
Click to collapse
what does wireless charging capable mean? does that mean it will have QI built in?
Juliann826 said:
what does wireless charging capable mean? does that mean it will have QI built in?
Click to expand...
Click to collapse
I would say yes.
A tech reviewer from pocketnow says it does have qi wireless charging
Sent from my Nexus 5 using XDA Free mobile app
can anybody confirm this?
Got the phone in hand. Charging with Samsung Qi pad just fine.
ravikumars said:
Got the phone in hand. Charging with Samsung Qi pad just fine.
Click to expand...
Click to collapse
Awesome..thanks for that
Semi-related.. Can anyone suggest a nice charging pad? I've looked at them for my N7 before and the prices seem to range pretty widely. I understand they charge pretty slowly.. but are they all the same for speed? Does the device need to be perfectly aligned in order to charge? Can I charge two devices at once (N7 and Turbo)?
I'm thinking I'll throw a pad on my desk and one at home, either in the living room (coffee table/end table) or bedside table.
There are some features of a phone that you appreciate more when you have them than you do when you read about them. An example might be high speed charging, their are a few technologies out there for this but the bottom line is when you have it you really come to like it. Its very nice when you have forgotten to charge your phone and you suddenly decide to go out to be able to get a charge on it that will see you through in the time it takes for a quick shower. When it was new and I first read about this it sounded good but no big deal, I usually make it through the day fine and charge over night. Now that I've had it though I really like it.
This is kind of a long way to get around to it but wireless charging is the same way. Its very nice to simply have the pad on the night stand or wherever you may put it and drop your phone on it without having to plug it in. It seems like nothing much but once you get used to it having to plug in seems like a bit of a hoop jump. One benefit of wireless charging that often gets missed is port damage, I have had more than one phone in the household that met its demise by tweaking the micro usb slot so that it either wouldn't charge or couldn't transfer data or both. My understanding is we will still have to plug in to get high speed charging but the ability to do both if we want is a very good thing in my mind.
krabman said:
There are some features of a phone that you appreciate more when you have them than you do when you read about them. An example might be high speed charging, their are a few technologies out there for this but the bottom line is when you have it you really come to like it. Its very nice when you have forgotten to charge your phone and you suddenly decide to go out to be able to get a charge on it that will see you through in the time it takes for a quick shower. When it was new and I first read about this it sounded good but no big deal, I usually make it through the day fine and charge over night. Now that I've had it though I really like it.
This is kind of a long way to get around to it but wireless charging is the same way. Its very nice to simply have the pad on the night stand or wherever you may put it and drop your phone on it without having to plug it in. It seems like nothing much but once you get used to it having to plug in seems like a bit of a hoop jump. One benefit of wireless charging that often gets missed is port damage, I have had more than one phone in the household that met its demise by tweaking the micro usb slot so that it either wouldn't charge or couldn't transfer data or both. My understanding is we will still have to plug in to get high speed charging but the ability to do both if we want is a very good thing in my mind.
Click to expand...
Click to collapse
Good points. I held off on a pad for my N7 because the battery easily lasts me through the day, two if needed (I usually charge it every night, though). Even though the Turbo probably wouldn't need to be topped off during the day like my Moto X would benefit from, it would be nice to have the option. I agree on the Turbo charger too. Great in a pinch if you are at an airport or something and just need some quick juice for a flight or something.
3.9Ah batt's gonna take a long time to charge with a 700mA limit though.
Should be OK overnight. Then again if it's only discharged to 60% when you start it shouldn't be hateful.
Yeah, wireless charging works best where/when you are going to set it down for a while such as over night or when you place the charger where you set your phone in the evening. I used both, one on the nightstand and one on the end table by my chair. In the latter case it is quite convenient since you can answer a text or what have you and simply set it right back down and its charging again. This is why I think its a great feature to have both wireless and high speed by whatever name, they should complement each other well. I say should because I've had both but not on the same phone, I'm really fairly stoked about this handset for this and other reasons.
I was approached by the manufacturer about doing a review of this product. Being that I always am wanting to try new things, I agreed !
First thing's first - here's a link to the product on the EasyAcc site, and then the link to it on Amazon.
http://www.easyacc.com/644-easyacc-monster-20000mah-power-bank.html#/secondary_colours-black_orange
http://www.amazon.com/EasyAcc-20000mAh-Dual-Input-External-Portable/dp/B01422TC14
And one more link - has some great info on what these USB charges or "Power Bank" products are.
http://www.easyacc.com/media-center/what-is-power-bank/
Here's my no nonsense layman's review!
I've always wanted to get my hands on a decent USB charger to carry around in my roller-briefcase. In my job role I have to travel the entire length of the county to cover all technical needs to 4 different school district sites. With all that travel, I don't always get to plug in for long at a site, and in the car I am pretty limited to 2 USB ports, so, this one helps out A LOT!
First of all - 20,000 mAh of charge to be shared to your devices. My Moto G 2015 has a 2470 mAh battery. Coming from being FULLY DRAINED, that's 8+ *FULL* charges of your Moto G if that's the only thing you're using it to charge. But the nice thing is, this device has FOUR USB ports, so you can charge your phone, tablet, ipad and e-cigarette all at the same time if it came down to it! There are 4 LED indicators on it showing how much charge it has left - 4 lit up means 100%, 3 means 75%, 2 means 50% and 1 means 25% . Also, it will adapt to the device's max charging speed.
The power bank is also small enough that it could fit in the cargo pocket of your pants. Plug in your phone to it, turn on your bluetooth headset and talk until you're blue in the face - you won't be running out of battery anytime soon!
I live in Florida so hurricanes are a yearly annoyance. With the high probability of one knocking out power if it hits, you can still charge or power your technology from this power bank for several days without worrying about running out of juice. Speaking of power outages - this power bank has a great accessory built into it - a flashlight (a damned bright one at that!)
To be 100% honest, I haven't been able to kill this thing - I have yet to drain it down below 25% after having done a LOT of charges for my phone and Galaxy Tab 4.
I look forward to being able to incorporate this device into my daily life - it's made a real difference so far - now only if it were waterproof so I could take it out on my kayak when I fish!
Looks like bargain for a 20000mAh Power Bank. I went with the JUNOJUMPER (which has only 25% of the mAh as the EasyAcc) a few years back. Still working just fine. And yes, it really can start the engine of a small car..
JWhipple said:
I was approached by the manufacturer about doing a review of this product. Being that I always am wanting to try new things, I agreed !
First thing's first - here's a link to the product on the EasyAcc site, and then the link to it on Amazon.
http://www.easyacc.com/644-easyacc-monster-20000mah-power-bank.html#/secondary_colours-black_orange
http://www.amazon.com/EasyAcc-20000mAh-Dual-Input-External-Portable/dp/B01422TC14
And one more link - has some great info on what these USB charges or "Power Bank" products are.
http://www.easyacc.com/media-center/what-is-power-bank/
Here's my no nonsense layman's review!
I've always wanted to get my hands on a decent USB charger to carry around in my roller-briefcase. In my job role I have to travel the entire length of the county to cover all technical needs to 4 different school district sites. With all that travel, I don't always get to plug in for long at a site, and in the car I am pretty limited to 2 USB ports, so, this one helps out A LOT!
First of all - 20,000 mAh of charge to be shared to your devices. My Moto G 2015 has a 2470 mAh battery. Coming from being FULLY DRAINED, that's 8+ *FULL* charges of your Moto G if that's the only thing you're using it to charge. But the nice thing is, this device has FOUR USB ports, so you can charge your phone, tablet, ipad and e-cigarette all at the same time if it came down to it! There are 4 LED indicators on it showing how much charge it has left - 4 lit up means 100%, 3 means 75%, 2 means 50% and 1 means 25% . Also, it will adapt to the device's max charging speed.
The power bank is also small enough that it could fit in the cargo pocket of your pants. Plug in your phone to it, turn on your bluetooth headset and talk until you're blue in the face - you won't be running out of battery anytime soon!
I live in Florida so hurricanes are a yearly annoyance. With the high probability of one knocking out power if it hits, you can still charge or power your technology from this power bank for several days without worrying about running out of juice. Speaking of power outages - this power bank has a great accessory built into it - a flashlight (a damned bright one at that!)
To be 100% honest, I haven't been able to kill this thing - I have yet to drain it down below 25% after having done a LOT of charges for my phone and Galaxy Tab 4.
I look forward to being able to incorporate this device into my daily life - it's made a real difference so far - now only if it were waterproof so I could take it out on my kayak when I fish!
Click to expand...
Click to collapse
But the main thinng is the cost...4k for a powerbank is too much costly for a student like me...can u suggest me a good powerbank within range of 1k...i found that india amazon....
Seeing as though power banks are a dime a dozen and there are a billion knock off brands out there, I tend to only trust a few brands that have proved their worth. Here is my review of the newest offering from Tronsmart. I am on the trade in your Samsung every year plan, so this will definitely be useful for any of the upcoming Samsung flagships. It the best of past,present, and future.
Look/Feel
First impressions were very good. The Power Bank was packed well, in the typical Tronsmart purple/white packaging and came with a good quality USB-C to USB A cable for charging the bank itself. The bank itself has a good sturdy feel and seems to be made well and out of quality materials. The matte and glossy black make it look very high end. There are white leds to indicate the remaining power level in the bank. The power button has a nice tactile feel.
Performance
The Volt IQ did a good job of recognizing the my phone and applying an appropriate amount of power. It recognized the various devices I plugged in and adjusted the voltage and amps accordingly (Bluetooth speakers, headphones, droid mini, tablets, etc).
The Power bank charged my S7 Edge with typical QC 2.0 voltage and amps (it supports Quick Charge 3.0, but my phone doesn't).
- The highest I saw was 9V @ 1.62 A.
Overall impressions are excellent, I would buy this product again. It is well made, did not get hot, performs great and looks nice. The 12000mah is plenty to charge my phone 3 times from empty to full, or my kiddos tablets 3 times. It is a reasonable size and weight compared to others I have purchased. I have no desire to carry a brick sized power bang with me.This one is ideal for travel, camping, beach trips, or just heavy phone use days. I do wish it came with a USB-C to Micro usb as micro is still the norm and will need a few years to fade out. I'll be ordering one so I can utilize both ports at once.
Amazon Link
https://www.amazon.com/Tronsmart-12...1468502754&sr=8-1&keywords=tronsmart+12000mah
The 12000mah is plenty to charge my phone 3.5 times from empty to full
Click to expand...
Click to collapse
The S7 Edge has a 3,600 battery
3600*3.5 = 12,600...
Besides power banks never give you the exact capacity it tells just like the usb drives for example.
Seems to me just as if you're just promoting tronsmart.
bigpapa007 said:
The S7 Edge has a 3,600 battery
3600*3.5 = 12,600...
Besides power banks never give you the exact capacity it tells just like the usb drives for example.
Seems to me just as if you're just promoting tronsmart.
Click to expand...
Click to collapse
Great use of the calculator. It was just an estimate. Besides, I rarely kill my phone to empty, so this would definitely give me 3 nightly charges.
I'll humor you and change the op.
I do reviews on tronsmart products because they fail to let me down. Some I have purchased and some were sent to me for review. I also do reviews on all the other cases and gadgets I purchase.
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