[Q] Removable battery? - Nexus 7 Q&A, Help & Troubleshooting

Does it have a removable battery? I'd like to have 2 batteries and have one charging while using the tablet, then just swap them when one drains, so I'm never tied down to a power outlet.
Also what capacity is the battery?

Vertron said:
Does it have a removable battery? I'd like to have 2 batteries and have one charging while using the tablet, then just swap them when one drains, so I'm never tied down to a power outlet.
Also what capacity is the battery?
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No and 4325 mAh (Up to 8 hours of active use)

Outrager said:
No and 4325 mAh (Up to 8 hours of active use)
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only way use the microUSB to charge you nexus7 or add one bypass the original battery.

Related

[Q] Backup battery

Would i be able to use a 1500mAh battery with micro USB to charge my htc wildfire, which has a 1300 mAh battery?
triggerdk said:
Would i be able to use a 1500mAh battery with micro USB to charge my htc wildfire, which has a 1300 mAh battery?
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Is this an external battery?
If its intended for USB charging and has the proper specs for charging with a 500 mA allowance it should be fine.
mAh shouldn't matter (basically ampere/hour is the capacity).
Thx for the reply. It is an external battery thats why it has micro USB

[Q] What is my actual mAH on my new battery

Hi.
I recently bought a new Fat battery for my desire. It promises to deliver 2600 mAH but i have my doubts...
First of all, only the voltage is printed on the battery itself.
Second, I experience worse uptime than on my original 1400 mAH battery.
Third, I guess Iam just sceptical by nature.
So my question: Is there an app out there that will display max capacity?
Or do I really have to measure it with a multimeter?
Hearnz said:
Hi.
I recently bought a new Fat battery for my desire. It promises to deliver 2600 mAH but i have my doubts...
First of all, only the voltage is printed on the battery itself.
Second, I experience worse uptime than on my original 1400 mAH battery.
Third, I guess Iam just sceptical by nature.
So my question: Is there an app out there that will display max capacity?
Or do I really have to measure it with a multimeter?
Click to expand...
Click to collapse
the only way to measure precisely is using an app called
battery monitor widget
have it measure the current and voltage every 60 seconds
fully charged ur volatge suppose to be at ~4.2V with either battery
the drainage suppose to be the same at screen off
lets say ur phone drains 9mA steady
u should see the voltage sinking slower on the higher capacity battery
i would give it an hour or 2 hours on each battery to check the result
example:
1400mAh battery
steady 9mA current over 2 hours from 4200mV down to 4150mV
2600mAh batter
steady 9mA current over 2 hours from 4200mV down to 4175mV
hope it helped^^
https://market.android.com/details?id=com.digibites.m.sysmon&feature=search_result
This shows the mAh.
if you brought the £13 one made in China from ebay (like I did) then it's a total fake the stock battery lasts longer, the only good thing about it is because the back cover is that much thicker you can rest it on it's side to watch movies etc...!
beanbean50 said:
if you brought the £13 one made in China from ebay (like I did) then it's a total fake the stock battery lasts longer, the only good thing about it is because the back cover is that much thicker you can rest it on it's side to watch movies etc...!
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That's true. Better to buy the original.
Sent from my Xoom using Tapatalk

whats the mah of the tf101 battery?

Cant seem to find it anywhere.
xdmds said:
Cant seem to find it anywhere.
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check the white label on the back of the box
I believe it is two 3300mAh batteries. so 6600
No pretty sure its a 2s 3300mah battery. Which means 7.4v 3.3Ah
Standard battery, Li-Po 24.4 Wh, 3.7V.
24.4 Wh / 3.7V = 6.594 Wh/V = 6.594Ah = 6594 mAh.
ASUS states the battery as 24.4 Watt hr battery for both the tablet and the external battery. 7.4V * 3.3Ah (3300mAh) will equal 24.4 Watt hr
Most likely asus didn't want to say the battery capacity because they put the 2 batteries in series for higher voltage, and 3300mAh sounds rather low when compared.
If the batteries are put in parallel then you'll have 3.7V at 6600mAh and for tablets that have this configuration, you can recharge them from the 5V from USB chargers.
AnTrans said:
ASUS states the battery as 24.4 Watt hr battery for both the tablet and the external battery. 7.4V * 3.3Ah (3300mAh) will equal 24.4 Watt hr
Most likely asus didn't want to say the battery capacity because they put the 2 batteries in series for higher voltage, and 3300mAh sounds rather low when compared.
If the batteries are put in parallel then you'll have 3.7V at 6600mAh and for tablets that have this configuration, you can recharge them from the 5V from USB chargers.
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True but the 5V componants won't work well
Docking keyboard the same?
Presumably you're talking about just the main tablet bit. Does the extra optional docking keyboard have exactly the same too, which would double the capacity?

Charging time

Hey guys,
My N4 takes kinda too long to charge in comparison to my older Galaxy S which used a 1500mAh battery.
The Gs used to take about 1 and a half hours while the N4 takes over 2 and a half hours.
Is this normal? or is there something wrong with my phone?
PS: I'm talking about regular charging time, no Fast-charge.
Thanks
The nexus 4 has a 2100mAh battery.
It's normal for it to take longer to charge than a 1500mAh battery.
abaaaabbbb63 said:
The nexus 4 has a 2100mAh battery.
It's normal for it to take longer to charge than a 1500mAh battery.
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Click to collapse
Additionally, maybe try just charging it while you sleep. Then time isn't an issue

Battery drains while charging.

Hey guys.i just got an s4 like a month ago.eveything was fine but i cant charge the phone.i have to use an external charger. Whenever i connect the charger the led on the phone and the battery icon indicates that it is charging but the battery starts to go down instead.like 1 % every 30 seconds.i have no problems transferring data via usb from computers.i have tried atleast 10 different chargers and usbs and around 4 different batteries.when i charge the batteries via the external charger i get around 4 to 5 hours of usage so i guess the battery is fine.currently i am rooted but the problem existed while i was unrooted.i am on stock firmware.
The charging port on the phone is probably damaged or has dirt stuck on the connectors.
Cheap cables and chargers don't always provide the necessary power to the phone.
Use an app to measure how much mAh you actually get while charging.
GDReaper said:
The charging port on the phone is probably damaged or has dirt stuck on the connectors.
Cheap cables and chargers don't always provide the necessary power to the phone.
Use an app to measure how much mAh you actually get while charging.
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Click to collapse
I checked .it shows that i get 400 mAh when the screen is on and 800 mAh when its off.?.still the battery keeps on draining even if its on or off.
Hey and how can i transfer data without any problem if the port was damaged
Nexsss1 said:
I checked .it shows that i get 400 mAh when the screen is on and 800 mAh when its off.��.still the battery keeps on draining even if its on or off.
Hey and how can i transfer data without any problem if the port was damaged
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Unfortunately I'm not an engineer so I can't tell you.
You should get 1900mAh when charging.
You get 400mAh only when charging from a PC USB port. If this happens from an outlet, then there definitely is something wrong somewhere.
It drains because 400-800mAh is not enough. It uses more power than it gets.
Nexsss1 said:
I checked .it shows that i get 400 mAh when the screen is on and 800 mAh when its off.��.still the battery keeps on draining even if its on or off.
Hey and how can i transfer data without any problem if the port was damaged
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Click to collapse
You probably got a dirty usb port or you have some water damage in it. Like GDreader said, that is probably the culput.

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