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Hey guys, anyone knows if i have :
2 double AA wif 2700mah each that gives u 5400mah (using energizer energi to go) compared to lithium batt of 5000mah (using sanyo mobile booster double li on batt)
which one would be better at charging our high power consumption PDA eg. HTC touch HD?
It's not just about mAh
It's not just about the mah of the battery; you also have voltages to think about.
I have a good investment in 1.2v nimh batteries - so 2 of those would give me 4000mah if connected in parallel but only provide 1.2v of.... voltage. Then, consider your phone - it probably has a 3.7v lion battery. To get to the same total capacity and voltage, you would need to have 3 batteries connected in series (give you 3.6v or possibly a touch more if really full) to get close to 3.7v at 2000 mah.
I've built external packs for my Creative Nomad Zen (same type of battery, 3.7v 1000mah) using 4 aa batteries (4.8v, 2000mah.) The stock charger was 5v 1000mah, so it was close enough. A bit bulky, but it worked great in the car where I didn't want to buy a charger and already had the batteries. Of course, odd things can happen when the voltage of the "charger" goes below the expected input. As an extender for something USB Chargable, you could probably do the same thing with 4 batteries to simulate a charger and extend your runtime. I'd suggest "aaa" batteries to make the pack smaller.
Do not try this if you have no clue regarding electronics. You can hurt your phone, hurt yourself and light stuff on fire. And not in a cool way.
Sorry bro didnt quite understood ur conclusion here.. Wasnt electronics trained and educated haha. But anyway yah i do understand mah is not the main thing here..
But rather the voltage. So i would suppose a lithium works better at charging high power devices given approximately the same mah specs?
Alright; just so we're clear - your question is regarding whether a lion/cell battery will do better than another chemistry battery when powering a phone?
The real boom is power to weight. Look at a double a battery and compare that to your cell battery. Hold both of them - the lithium ones for a given capacity will be lighter and smaller.
Both could power a device like a cell phone for similar time, given the same capacity.
Hope that helps....
oh thx! that realli helps.. But however with regards to sanyo's website. 2x 2100mah enelop batteries could onli power a cell phone for 70mins. But its lithium 5000mah could power it for 2hrs! Doesnt that conclude that lithium gives more power given the same capacity?
Even same mah Li-ion is better than NiMH due to discharge characteristics. Li batteries lose very little voltage from Topped up to full allowable discharge. So has more usable power for a device that was built for nearly constant voltage like ours.
I'm looking at buying one of these from ebay, but the ones on ebay just have the battery and the back case. So how are y'all charging it? Just with it inside your phone and using a usb charger or something?
I charge my 3500 mAh battery inside the phone and the stock battery in an external charger.
I hope you mean Seido's 3500mAh battery, as I don't know any reliable manufacturer that produces a 3000mAh battery.
In any case, most people probably just charge them in the phone. But external chargers should be available.
dom085 said:
I hope you mean Seido's 3500mAh battery, as I don't know any reliable manufacturer that produces a 3000mAh battery.
In any case, most people probably just charge them in the phone. But external chargers should be available.
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I was going to type 3500mah, but at the time of the posting, in the accessories forum there was a post talking about 3000mah...so I thought it was 3000mah.
And also..I thought people said that the Evo wasn't meant to charge a battery of that size, so would that mess up battery life at all?
ms79723 said:
I was going to type 3500mah, but at the time of the posting, in the accessories forum there was a post talking about 3000mah...so I thought it was 3000mah.
And also..I thought people said that the Evo wasn't meant to charge a battery of that size, so would that mess up battery life at all?
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I havent seen an issue....but I did have to clear the battery stats to get it to charge all the way and get an accurate reading of battery life remaining
I have the 3000mah batteries from ebay. I charge them in my wall charger that I got with my 1500mah batteries, also from ebay.
Seidio 3500mah here , I charge in the phone . I get the initial drop when I unplug in the morning but the battery itself lasts way longer than stock . I dont have an external charger
how much size is added to the phone with this battery? I checked it out on youtube, but it made the phone look way to huge, bigger than i think the battery makes it...i distrust the videos because some videos with an Evo with a regular battery makes it look like its a toothpick...
I love my 3000mah ebay battery, and the ebay door looks much better than the seidio door. I get great battery life out of it, around 3 times as long as the stock battey. I charge it in the phone occasionaly(and wipe battery stats), but I get better life when using an external charger. For this I use my dock with the extra battery slot on the backside. My solo external battery charger does not charge as well as my dock. I just made a thread about it on PPCG and AndroidForums.
So, I have been looking all over the various stores (Sprint, Radio Shack, Ebay, Seidio), I bought a standard battery (the same mAh as my stock battery). The battery I purchased has about the same batter life (as expected about 6-9 hours depending upon usage of games and data) Looking over the extended life battery options I dont quite understand the claims.
http://www.seidioonline.com/product-p/bacy35hev4-bk.htm
This is a 3500mAh battery and has "double the capacity of the original battery"
http://www.seidioonline.com/product-p/basi17hev4.htm
This is a 1750mAh battery, it's not listed the capacity.. but my stock battery is 1500mAh so it cannot be by much.
http://cgi.ebay.com/3500mAh-Extende...Accessories&hash=item483d837c7f#ht_4076wt_905
This is a 3500mAh battery, it comes with a battery cover I would imagine that it's similar to the Seidio battery as far as in the capacity
has anyone tried the extended batteries off of ebay, do they work well.. and do the battery covers hold up well?
Any suggestions of extending battery life? I keep my wifi turned off, dimmed my screen, and a few other things.
Right now I am thinking of just getting a battery charger and just swapping between the two batteries.. it would just be a hassle taking my case and battery cover on and off every day.
check out http://batteryboss.org/ first to see where those batteries really stand.
there is also an 1800 mah at http://www.htcexpress.com/ that was supposedly tested to be 1700 mah.
that woud make it the best battery around, but i bought one and it seemed worse than the stock battery.
sprint also now has a 2600 mah with extended back. i don't know if anyone has tested it yet.
i purchased the ebay 3500mah with cover and also the OEM HTC extended battery for the TP2
HTC model no. RHOD170
. works great and according to battery boss it is the best extended battery ratings wise.
i got the battery for OEM HTC extended battery for18 bucks on ebay. so you have have two batteries and a better looking cover for half the price of the seidio battery.
however, i cant seem to get the battery status to show up correctly on the oem battery display but it does show up on "battery status" app
vletnguyen said:
i purchased the ebay 3500mah with cover and also the OEM HTC extended battery for the TP2
HTC model no. RHOD170
. works great and according to battery boss it is the best extended battery ratings wise.
i got the battery for OEM HTC extended battery for18 bucks on ebay. so you have have two batteries and a better looking cover for half the price of the seidio battery.
however, i cant seem to get the battery status to show up correctly on the oem battery display but it does show up on "battery status" app
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the TP2 battery works in the Evo? i was told it didn't?
yea , i'm using it now. same as the hero batteries.
just dont know how to get it to display info correctly without another app
shows grey battery with exclamation through it
SpaceMonky said:
check out http://batteryboss.org/ first to see where those batteries really stand.
there is also an 1800 mah at http://www.htcexpress.com/ that was supposedly tested to be 1700 mah.
that woud make it the best battery around, but i bought one and it seemed worse than the stock battery.
sprint also now has a 2600 mah with extended back. i don't know if anyone has tested it yet.
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Batteryboss.org was a lot of help! honestly i think the best bet for me would be the cheap one from ebay that i mentioned.. the bad news is that it doesnt seem that they have tested it yet... so I think ill keep my eye open and wait on it
Extended battery for the EVO on eBay 3000 mah
This is a way better buy. The battery life rocks. The door is rubberized and a really nice feel/texture. Moretalktime has 100% feedback and has them in stock in USA.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130450056383
HI i have question
can you connect 2 Lithium battery's in parallel doubling the capacity (amp hours) of the battery while maintaining the voltage i was thinking grabbing 2x Touch pro 2 OEM 2150mAh putting them together making a 4300 mAh battery and using an extended battery cover to hide the fat .
I know each battery has a chip protecting it from overcharging
is it possible with Lithium battery's and safe ?
As long as they're both the same voltage and same capacity, I don't see how it could be a problem. However, since the charging circuit is not designed to do that, i don't know what will happen if one of the two batteries gets messed up.
It may not be that simple. Someone started a thread about this not too long ago. Check here:
http://forum.xda-developers.com/showthread.php?t=1074926
I'll tell you the same thing I told the OP of that thread:
Wouldn't it be easier to order an extended battery with the battery cover from eBay for like $7.50 delivered? I wouldn't risk breaking a $500 phone when the fix you are looking for is so cheap and easily available.
http://www.amazon.com/Anker-Batteri..._26?s=wireless&ie=UTF8&qid=1316372694&sr=1-26
Read an article in the HTC Sensation forums where many of the posters picked up an Anker battery as a "Why the hell not for $15?" deal and had generally positive results. Did a search and not only does Amazon sell multiple varieties of Anker batteries, but many of them have a ton of positive reviews.
Before all the battery naysayers jump in and shout "You can't get an extra 300mah in a stock battery! It's another chinese scam and it's probably only 1.03mah!" the Sensation people explained it as being noticeably thicker than the stock battery while still fitting snugly inside the battery door. A good 1mm thicker at least.
Anyway, bought myself a pair along with a car charger for $30 for two batteries, a car charger, and a USB charger. Will let you all know if its a huge letdown, or if the positive reviews aren't just Chinese robots blowing smoke up our you-know-what.
Hey can you do a favor? Install battery calibration app from market and tell us how many mV (Milli volts) it say when the phone is truly 100% charged.
interested in seeing how those batteries are
was about to buy one
keep us posted
I've read in some of the comments on Amazon that they work best when the wall charger is used, though that may be because the wall charger keeps it at 100% while charging inside the phone causes the battery to drain down to 90% if left on the charger after it reaches 100%. Of course, the battery monitor won't tell you that to keep Samsung's support lines from clogging.
Thankfully this is Amazon and not the overseas shipping I had to deal with with my last battery, so it should arrive (according to Amazon) somewhere between the 23rd and 28th. Will test it heavily with my current ROM and let you all know how it fairs.
rakeshchn said:
Hey can you do a favor? Install battery calibration app from market and tell us how many mV (Milli volts) it say when the phone is truly 100% charged.
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mV will not tell you anything about the capacity of a battery, only how close to fully charged it is.
Sent from my SGH-T959 using XDA App
shrapnelx said:
mV will not tell you anything about the capacity of a battery, only how close to fully charged it is.
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True. If it's anything like the stock or mugen battery that I have, it'll cap out around 4250 for Froyo, 4200 for MIUI/Gingerbread.
Momax 1700mah is fine and chip.
Well, while discharging the first battery through normal use, I was actually getting a little frustrated that it was taking so long. Got about 24hrs out of it from wall charge to phone shut off, including about 8 - 9hrs of overnight standby.
Got the second battery off the charger and into the phone, and after about an hour it's still showing at 100% and 4100 - 4180ish millivolts.
Anyone, nothing is decided just yet. Will have to see how they hold up after the first 5 full charge and discharges that "sets" the batteries internal memory. Or whatever.
I thought these AOSP ROMS were supposed to drain battery, dammit!
Just about done "Breaking In" the new batteries. Two things: On the surface, they seem to last quite a while given the last time I tested the Mugen battery I was on Froyo and I'm now on MIUI.
From what I've heard, Gingerbread on the Vibrant, whether it's an i9000 leak like Malice or built from the ground up like Cyanogen 7 or MIUI, tends to burn battery faster than on Froyo. I'm also using different voltage settings, a different kernel... you all get the idea.
Apart from flashing back to Froyo, or completely redoing tests on my stock and Mugen batteries on top of the new Anker battery, whatever results I get will be a bit skewed.
Also, MIUI seems to allow the battery to get further down in power before shutting it off. Froyo would often cut me off around 3700, but I usually see MIUI showing battery power as low as 3300 before shutting down.
Your link points to the 2x package...if you look up the batt itself and read the reviews, most will tell you it's basically a cheaper oem replacement
http://www.amazon.com/Anker-1800mAh..._1_5?s=wireless&ie=UTF8&qid=1317360583&sr=1-5
Still a great deal at 11 bucks shipped.... by itself...and assuming it lasts...my original batt that came with my phone died couple of weeks ago... (less than 2hrs on a froyo rom...) had another oem that I'm using now..so far so good, but who knows...this seems like a great buy, but doesn't sounds like it's any kind of gain even with the 1800mAh rating...
Samsung Galaxy SII Touch batteries work in our phones. Tested.
They are 1800mah and can be found for $23 shipped. They are GENUINE Samsung as well so...it WILL be the advertised 1800mah. Just saying.
Even cheaper on ebay : http://www.ebay.com/itm/330601629006?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
Sofiz has the Pisen battery for SGS II 1659 mAh, will this work on the Vibrant?
just ordered one too, hopefully it works out
Some reviewers saying battery only charges with wall charger and phone shows unsupported battery message. Those who have the battery please confirm.
adityamunshi said:
Some reviewers saying battery only charges with wall charger and phone shows unsupported battery message. Those who have the battery please confirm.
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I think I went over that at least 3 times already. Battery is a perfect fit. Charging is perfect (USB computer and Wall plug in). EVERYTHING WORKS with it. I wish people would read the topic more. It's only 2 pages. . .
Only reason it wouldn't charge in your phone is if you owned a Fascinate, in which case, get out of our forums, punk!
Ordered one from ebay and pretty happy with it so far. Only had it a couple days so far though and still messing around with different roms and kernels so hard to say exactly how long of a charge i get with it.
Got mine today, charging now. Thanks!
Just recieved mine from amazon, and so far its been great !
I bought the two off of ebay that come with the wall charger. I'm getting much improved battery life right now. I'm very happy with them. Even though they do make the phone slightly heavier, it's worth it IMHO.