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Has anybody tried a 3000 mAh battery or AA-battery USB chargers?

I have found a 3000 mAh battery on eBay for around $100 with shipping, and since I'm pretty tired of the short battery life I'm considering it. I was so embarassed when the family went skiing yesterday! My kids have smartphones (Qtek 8030 & 9100 - I keep the family on intelligent phones, my wife has a Qtek 8500 Star Trek) and they had MP3's playing all day in the slopes with only one of the three battery level stripes dissappearing, while I had to put my Atom in the car and charge it after only three hours, when it was down to less than 15 %! Which is why I'm considering either an expensive 3000 mAh or one of those cheap USB chargers where you just put in a regular AA (or was it AAA?) battery and hook it up to the mini USB port. So has anybody tried either of them?

The battery-based chargers work, there are AA and AAA models 'round here (>1 battery each) - but I haven't tried it on the Atom yet. Be aware that the Atom has a charger protection mechanism that refuses to let the battery trickle charge if it doesn't provide a rated amount of juice (this is not mentioned in the O2 site, but it's there. It's the reason why chargers that normally work on the Mini won't work on the Atom).
Personally, I'd rather get a charger that works practically everywhere than to grab an extended battery.
(Have you considered those new fangled solar powered chargers? Some of them contain internal batteries that store energy, even under artificial light - and it is this battery that is used to charge your device. This could be a better idea, but be sure to check if it works on your device.)
PS: a PDA eats battery like no tomorrow because it usually uses better processors and interfaces - the XScale on ours is the eater here. Smartphones run on a lower rated processor/card slots, and don't have touch sense screens, and thus can last for much longer. If you really need your PDA to last, well, forever - you might want to consider an extended battery or one of the CPU scaler programs.

Thanks! I forgot to say that I ate the battery with the CPU at 208 mHz (with XCpuScalar)... Anyway, I have two of those AA-chargers on the way, I'm glad they work! At home I have GP PowerBank chargers and a bunch of rechargable batteries which I will use for this. With any luck a few of those will last me all day on skis!
And I didn't know about that protection mechanism in the Atom, I have been wondering why it's so extremely picky when it comes to charging from USB cables and stuff like that.
And I hadn'd even heard about the solar charging option, but I see there are a bunch of those on eBay. They look pretty cool, but unfortunately when I'm in the sun I seldom stand still long enough to put the charger and the phone anywhere for charging. If there was an affordable vest or jacket for that, though...

I think the O2's charger protection mechanisms were discussed here:
http://forum.xda-developers.com/showthread.php?t=276400
Methinks Quanta borrowed something from Motorola.
The solar charger, btw, works under incandescent light as well (I have one - useful in a hotel room where you don't have a plug but you have access to a desktop lamp). More expensive models can supposedly work under flourescent light, but I'm a cheapskate. They work by having an internal LiON themselves, which is trickle charged by solar/incandescent power - and then the battery itself is the one that charges your PDA's battery. Many different types exist, but most of them have a 1000-3000mah internal reservoir, and the better ones have different voltage settings for differenet devices.

Yeah, but the problem is that they're too big for my jacket pockets, so they won't help me skiing.

Well, that didn't really work. So I have decided to go for quantity instead of quality: Ordering three batteries, one with a charger that charges it ouside of the phone as well as charges the phone. All in all around 40 dollars, which gives me four batteries to play with. I ain't gonna use up my phone next time I'm in the slopes! And I think the same batteries can be used on my next phone, the Atom Life. It's got a larger capacity battery, but it looks like it's the same physical shape. Then again I may be wrong, but at least I will have no problems on those boat trips this summer!

And that worked! Not to mention that the original battery has to be total an utter crap! On these new batteries I had more than twice the battery time I had on the original. Of course it's been used for about two years, but still it shouldn't be that bad! I have five year old PPCs that hasn't changed that much in battery time. Anyway, with three new batteries and the old one I can keep going for a looong time!

Mastiff said:
And that worked! Not to mention that the original battery has to be total an utter crap! On these new batteries I had more than twice the battery time I had on the original. Of course it's been used for about two years, but still it shouldn't be that bad! I have five year old PPCs that hasn't changed that much in battery time. Anyway, with three new batteries and the old one I can keep going for a looong time!
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bro did u tryed u,r AAA batery charger for Aom Life? i also bought a AAA battery charger fro my first Atom but not working after that tryed for my Atom Exec saem now going to check on my Atom Life,, thought to ask u befor check it.......

Some types works, some don't. It seems like only the black type work,while the shiny metallic one doesn't.

Awesome little battery Charger for Wing, Dash

Just thought I'd pass this along. This little battery charger for the Wing or Dash charges your phones battery with just one AA battery. It kicks up the voltage from 1.2-1.5v to 5.7v. Saps the hell out of the AA battery but charges the phone -- its really cool. I bought two of them.
I'm Not the seller - I have No interest in selling these. Just thought Wing users would like to know there's such a thing out there.
http://cgi.ebay.com/EMERGENCY-AA-BA...ryZ48492QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

How long of battery power do you get for 1 AA battery?
If it has small USB connector, can I use it for TyTn II (Kaiser)?

I will time it
Hi -- I've not timed it yet but I will and post results.

Iffy
I got one of those little portable chargers for mobile devices. It's a neat concept. Upon pruchasing one of those (in the US) for $19.99, it came with a cheap AA battery, and several adapters for different mobile phones. I used the AA battery that came with it and it charged my HTC Herald P4350 for 20 minutes. You can actually drain (and cause damage too) your phone battery it you have it plugged in (with a dead AA battery) your device (it said so on the package). This is my experience and others may be different. In a nutshell, the amount of time it charges depends on what kind of AA battery you use. Again, this is my experience.

True
Yes it does depend on the type of AA battery you use. A Lithium AA will give you much more than a rechargable NMHI. I put in an alkaline AA and talked with my brother for two hours today using my Bluetooth headset and this thing kept my phone to 100% charge the whole time.
I am not planning on keeping it plugged in all the time especially when its dead.
I am going to use NIMH AA batteries in my Solar Charger that sits on my Dashboard. Rotate them out and get basically free energy. Hey I know its not going stop the Icebergs from melting but its something.
Here are the specs from the package:
Input 1.2-1.5v
Output 5.7v
Standby 80 hours
Talk Time 2 hours
Charge current 850-2300m
Discharge 150-530m
*This one says nothing about draining your phone's battery in fact it says if using NiCads or NMHI to make sure it drains all the way down before you disconnect it. It says best results can be obtained using a Lithium AA but who can afford that.

It Should work with the Kaiser
gogol said:
How long of battery power do you get for 1 AA battery?
If it has small USB connector, can I use it for TyTn II (Kaiser)?
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Yes it has a mini USB connector and it should work with the Kaiser but you may want to ask the seller to be sure.

Anyone use these battery chargers?

Anyone ever use one of these?
http://cgi.ebay.com/NEW-EMERGENCY-A...ryZ48492QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Please comment on:
1) how fast they charge
2) how much they charge the phone
thanks!

The kaiser battery is rated for 3.7 volts and the battery that device uses is 1.5 volts. It would charge at the same rate, but drain the AA very quickly. The cost of the batteries it would take to power that thing would quickly outweigh the benefits it would produce. If it had 2 AA wired to it then it might be remotely useful. I mean if you absolutely cant survive if your phone dies, then yes it would give you enough battery life to keep your phone going for a few hours.

Yeah...well I bought two cheapo spare 1600mah batteries of ebay with the thought of carrying one around with me to swap out if needed....but I was considering getting one of the 2-piece rubberized cases for my phone. In that case, the battery compartment I believe will be inaccessible and I don't want to snap off the back case constanstly and wear down the integrity. Therefore I thought something like this might be a good option.
Even with free access to the battery door, I would think opening it up on a regular basis to swap batteries isn't good for it (would get loose, etc...).

Motorola P790
Well, I used Motorola P790 and it is pretty good, rechargeable. I can recharge it together with my phone with one charger. It gives abt 30% recovery of your battery in abt 2 hr.

rovanesyan said:
The kaiser battery is rated for 3.7 volts and the battery that device uses is 1.5 volts. It would charge at the same rate, but drain the AA very quickly. The cost of the batteries it would take to power that thing would quickly outweigh the benefits it would produce. If it had 2 AA wired to it then it might be remotely useful. I mean if you absolutely cant survive if your phone dies, then yes it would give you enough battery life to keep your phone going for a few hours.
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Not really, these units have a small switching power supply which boosts the voltage to be able to charge the phone (if you look at the picture you can see the copper inductor coil for the oscillator circuit inside the top clear piece), a Kaiser won't charge with an input voltage under 5 volts.
I don't know how long it takes to charge, but I doubt that you can get more than 1 good charge from a fresh battery.

I've had all sorts of charging problems recently. With the Wifi, GPS & Phone on it would use about 500ma of power. But if I was running SatNav it would actually use about 850ma.
What I've done is twofold. I've bought a 2700ma internal battery for the phone and I've got a 12-24v charger that puts out 2a (2000ma) and so far it has kept the device fully charged, even with Bluetooth running!
I'm not sure how to gauge the 2700ma battery as I've only been running it a day. I think it needs a bit more of testing before I use it full time without the spare, but it's also good to have the spare....

[Q] Where to buy an extra battery or charger?

Me and my wife both have EVO's and for some reason hers doesn't hold a charge very good. Is there somewhere you recommend to buy another battery? Id like to have a charger that hooks into my cigarette lighter that'll charge a battery itself.

Check Amazon under EVO Battery.
EVO battery life sucks. You have a choice - slim sexy phone with lousy battery life or big fat phone with good battery life. Your wife's phone may drain faster simply because she uses her phone differently yours. Things like Facebook are known to drain battery very quickly, etc.
Either buy extra batteries or an external battery recharger - anyway, Amazon has them all.
On the battery charger for the car, make sure you get one rated at at least 800 ma. Many car chargers only charge at 500 ma and if you are running navigation or stream audio in the car, your battery will drain faster than it is charging so it will eventually go dead even though it is plugged in. The EVO NEVER runs directly off plugged in power. It always runs off the battery - so even when it is plugged in, it is running off the battery so you have to charge faster than you use.

Battery is fine if you tinker a little bit. But I got 2 batteries +wall charger + free shipping = 10.00 $ from ebay
I'm on Facebook twitter all day with my phone +email txt, talk and I get a full day from each charge
from my phone duh

I disagree with the comment above (mitchellvii), the Evo with the extended battery isn't that fat. Due to a large screen it evens it out. You can still use (with the extended battery) a spring holster and it will fit in a craddle and you can use the kick stand. I also like that more sturdy feeling which gives it a better weight, in my opinion, while holding it.
Amazon is a good place but so is Ebay. You have more batteries to pick from at ebay. I have bought 2 3500mAh batteries from ebay and the battery life is GREAT. Can go almost 2 days without charging with normal use (constantly on facebook, internet, and yelp- normal daily use of talk and text). Price ranges from $9-$85. Most batteries are shipped from Hong Kong so can take up to 3 weeks to ship to the U.S. And buy, if you can, using paypal for a little insurance in case the battery is defect.
You have options: If you want to stay with a slim phone- ebay has some batteries with higher charge capacity than the OEM without needing to buy a backcover- keeping it slim (1800mAh-2000mAh).
You may also look into software as well. Keeping your wifi or bluetooth on will drain your battery faster. Here are some great tips from goodandevo... http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
Hope it helped.

Try www.spider-foot.com. I got a couple for the Epic and they are great. I'm waiting for the EVO batteries to come which I ordered on 18 Nov. Also free shipping.

Ebay is the way to go. I have 8 batteries, including two 3000mah and two 1800mah along with two wall chargers and I paid less than $60 for all of them combined.

[Q] Extended Battery Cases

Besides The ZeroLemon & Mugen Extended Battery Cases, Are There Any Other Ones On The Market? I'm Not Really A Fan Of Either For My Own Reasons.

No.
Sent from my Nexus 4 using Tapatalk now Free

Geecho said:
Besides The ZeroLemon & Mugen Extended Battery Cases, Are There Any Other Ones On The Market? I'm Not Really A Fan Of Either For My Own Reasons.
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Have you considered using a battery pack as needed? The first advantage is that your phone continues to fit in your pocket and doesn't look like a 1980's mobile
You only need to connect the battery pack to the phone for an hour or 2 till it picks up sufficient charge for whatever you're doing.
When not in use the battery pack can be kept in a bag, pocket etc out of the way.
The capacity of a battery pack is lineally proportional to its volume (well, the cheaper ones provide less capacity compared to a good brand), and you can get anything from 2000mAh (almost the capacity of the Nexus battery), up to 11,000mAh+. Not sure why you'd need 11,000mAh unless you were going to the jungle for a week, but it may suit some people.
I have had a 5,500mAh pack from NewTrent for a couple of years now and it's a good compromise between capacity and size. Check them out on Amazon, they often have heavily discounted offers.
Some even include the cable connection integrated into their body now, so they are very convenient. I would not consider a battery case, since the battery pack option is cheap and very convenient