Meizu Official Test for M8 Battery Life

redstar

I am going to post the information because lots of ppl is interested and also the source is from Meizu whose test would be professional and trustful.

Someone of better English may provide better translation, I just share the information and if you have any query, feel free to ask, I will try the best to make it clear.

Original Information(On the bottom view)

电池与续航测试条件(Battery life and test conditions)

1. 通话时间：将电池完全充满电，使用默认设置，在网络信号较好的地方，用两部M8使用两张联通的卡互相通话进 行测试。让手机一直保持在关屏状态下通话，记录直到电池电量耗尽自动关机的时间。
1. Calling Duration: Full charge the battery, use default settings, hold the conversation between two M8 devices by using China Unicom(the 2nd largest mobile network in China) SIM Card under environment with good signal. Record the time until power drained and auto off.

2. 待机时间：将电池完全充满电，使用默认设置，分别插和不插SIM卡进行实测。测试过程中保持待机状态，不频 繁点亮屏幕，每天检查一次使用的电量。记录直到电池电量耗尽自动关机的时间。
2. Standby Time: Full charge, use default settings, test the duration with/without putting SIM Card. Maintain standby state during the test, do not lighten the screen frequently, check the consumed power once per day. Record the time until power drained and auto off.

3. 视频播放时间：将电池完全充满电，使用默认设置，不带SIM卡，播放MP4格式视频，分辨率为480*32 0， AAC 44.1khz，128kbps的音频格式，亮度为60%，高低音关闭，音量调节为50%，插上耳机，连续 播放，记录直到电池完全耗尽自动关机的时间。
3. Video Play Time: Full charge, use defalt settings, do not put SIM card, play MP4 video at 480*320 resolution, AAC 441.khz, 12kbps audio spec, brightness 60%, disable treble and bass(M8 could set sound effects for video play), volume 50%, earphone connected, playback until power drained and auto off.

4. 音乐播放时间：使用默认设置，不带SIM卡，播放MP3格式比特率为128kbps的音频格式，EQ关闭， 高低音关闭，音量调节为50%，插上耳机，关屏单曲播放。记录直到电池完全耗尽自动关机的时间 。
4. Music play time: Using default settings, put no SIM card, play MP3 audio format at 128kbps spec, EQ disabled, treble and bass disabled, volume at 50%, earphone connected, screen turned off and playback for sigle unit song, record the time until power drained and auto off.

5. 默认设置为：飞行模式、GPRS都关闭，电话打开，自动亮度调节打开。
5. Default setting: Flight Mode, GPRS disabled, phone switched on, brightness auto adjustment enabled.(I am not quite sure "电话打开“ means phone is on or just indicate phone fuction is enabled)

型号BA1200, 1200mAh, 3.7V,锂聚合物电池 Battery Model: BA1200, 1200mAh, 3.7V,Li-polymer Battery)
通话时间：370min Call Duration Time: 370 min
待机时间：带SIM卡179小时，不带SIM卡374小时 Standby Time: 179hrs with SIM, 374 hrs without SIM.
视频播放时间：7小时 Video play time: 7hrs
音乐播放时间：21.5小时 Music play time: 21.5 hrs

redstar

So personally I think the battery life is nice for me, but I am still going to buy another battery when I get M8.

Blah

So battery is pretty good then.

tilai

Would the battery life be considerably lower if SIM card was inserted before testing Music/Video? Assuming no call / sms received or sent during that time)

(@redstar English name for Liantong is China Unicom)

jack.jumper

well done!!!!!

adamL

Call Duration Time: 370 min
Video play time: 7hrs
Music play time: 21.5 hrs

great thanks!

jack.jumper

We can neglect that time, for we ve got 179 hours with SIM card, doinging nothing else. To put it more directly

8hours/179hours *100%= 4.4%(assuming 8 hours)
that is we only have 95.6% of a full battery.
7hours(video without SIM)*95.6% =6.692 hours

got it?

redstar

I think it would be lower if SIM card was inserted since the device receive and send datas to communicate with mobile net. And by judging the test results of the standby time with/without SIM card inserted, it is definitely going to be lower to some extent.

----------------------------------
I think we forgot the prerequisites of the test: Default Setting, which is in flight mode. So we can sure neglect the impact by data communication because the device do not send neither receive any data in flight mode.

So I think the result is impressive.

jack.jumper

the most advantage is that when the phone hit the market, most of the accessory factories in china will definitely introduce more higher volume battery, so dont have to be afraid of that

tilai

You lost me completely, but if that means it only takes off about half-an hour of usage time, I'm more than satisfied

jack.jumper

i know what you mean, you didnt catch me.haha
let me explain

179 hours is official working hours with SIM card.

we just assume the phone run 8 hours with SIM card, why choose 8hours because it is more objective, and related to 7hours of video playing time.

8hours/179hours *100%= 4.4%

we used 4.4% of battery life in 8hours, just for SIM.

the official time of playing video is 7hours, but we only have 100%-4.4%=95.6% battery, we just use 95.6% battery for video playing

7hours(video without SIM)*95.6% =6.692 hours

Therefore, 6.692hours is the working time for a M8 playing video with SIM card usage.

lite

Are you trying to say these video playback battery life tests were done without a SIM card so aren't accurate enough.

I think that isn't the case as when playing back video the processor is out of its "power saving state" unlike it would be with a SIM card in but on standby , So it wont need to activate to ping the cell towers ect. So in reality it may be a little lower but not 5% , More like 1% perhaps.


Regardless , Those are some pretty awesome figures , 7-ish Hours video!!! and 22 Hours music! Is crazyy..

__________________

jack.jumper

all in all, crazzzzzzzzzzzzzzzzzzzy battery life so damn good

Rabsi1

is that for 8GB or 16GB




100th post yeah

jack.jumper

everyone should be more optimistic like you

tails2

If those are the 'REAL WORLD' battery stats then they are freaking awesome. I just hope they aren't the usual factory says one thing but real world shows another

kadajawi

The numbers were obviously recorded under optimal conditions, no way it will work that well in real life. I'm using higher bitrate files, I'm using quite a few Ogg Vorbis files which take more CPU power, I will leave the phone mode switched on, I will look at the screen more often, etc. But the times are still pretty nice, so I think a day of usage should be at least possible, which is what I was hoping for. And I'm going to have a spare battery in the backpack anyway.

At least if I'm going to buy the phone, don't know yet. The CNY is waaay to high, should be at the same point it was half a year ago...

Voigti

would be interesting to know, how the battery life is with high quality files....btw. that`s the max. for the M8 Video function? codec/bitrate/fps? anything about it in any review so far?

MartijnGP

I wonder if those are actual stats, measures when taking the device with you on a regular day or in a factory in a Faraday cage with the exact right temperature and the best battery batch picked..

A shame the music is only 21 hours when doing nothing else, my guess it would do up to 12 hours. Could be annoying for me as it happens quite often that I leave home in the morning and think I'll be back that evening, but then I decide not to and sleep at my girlfriend's house. My M6 pulls this off easily with the battery, but on a phone which is used for other stuff as well, it'll be fairly difficult. Anyway, we'll see what it does. If it's too low, plenty of aftermarket accu's will be available and I'm happy to pay for that.

Err0r

Meizu's battery stats for the M6 were quite accurate. Usually users would get a few hours more juice than what was promised.