[HTC Desire S] enigmaamit:
Battery review - Reaper kernel

Here's my battery Review for Reaper (with Reaper kernel)

Disclaimer : I'm not Lowveld.:D:D:D

(For those who didn't get it, that means all this is coming to you from an end user like yourself, not a developer or a specialized tech reviewer from c-net or endgadget, so please take the review with a pinch of salt.)

So i've been doing some battery testing on this ROM with the new Reaper kernel, and as promised earlier, here's a quick review.

The phone came off the charger at around 8 pm IST yesterday and usage has been relatively normal (very subjective term, so I'm posting screenshots).

The device was always connected as long as i was awake. So connection off between 2 a.m. to 8 a.m. The mobile data was on most of the time (when i was at work) and when available (at home), wifi was used.

Background Data was left to Always On. My auto-sync is managed by Tasker, and it is set to turn on when connected to wifi, and shuts off when on mobile data.

Screen brightness was locked at 50% with auto-brightness set to Off.

At no point during the test was the phone put in Airplane mode, or the brightness settings changed, nor was the phone shut down / restarted.

The Cyanogenmod Settings under Performance were adjusted before disconnecting from charger, and were not touched thereafter. These are basically Reaper governor scaled between 245 MHz to 1GHz. See Screenshot.

The phone use was real world. The phone did not lie in one place with steady cell reception. I traveled across the city for my commute to work and back, jumping cell towers like anybody else. Only 2G network was used, 3G disabled from within Network settings.

Prominent usage features included :

> Phone calls (1 hours and 20 mins)

> Light internet browsing (Don't know how much honestly, but must have fired up the browser around 15 times)

> Whatsapp messaging service used frequently.

> Auto sync on for most of the time, syncing all my accounts (Google, facebook, twitter, exchange mail, whatsapp, and Friendcaster).

> Camera used thrice for still photos.

> 15 min of gaming : Where's my Water, if you must know.

There may be unknown variables here, but i tried to keep the use of the phone as real world as possible on normal weekdays (and this includes the night - you can't have a whole day without a night - and no, i don't use my phone while i'm asleep) and this is what i have found.

The screenshots posted below were taken at around 6-7% battery remaining. They are mostly self explanatory. So there's more juice left in the phone to make it through a few more hours.

All in all, i am personally less than satisfied with the performance. I expected more than this... Where i was really dissatisfied, was the fact that the battery stats show that the phone never went to sleep!! See the screenshots and you'll understand.

Also, the per-minute battery drain while the screen was off (the "supposed" sleep state) is very high. I get 5-8 mA on MIUI and 6-9 mA on Endymion. Here, it's close to a mean of 11-12mA. The data shown was collected by Battery Monitor Widget pro (on all of the above-mentioned ROMs) I had this problem before starting the review, and as instructed by lowveld, did batterystats.bin delete and restart, and also a full manual calibration (Yes, by now, i know how to calibrate a battery)

A for the good part, the ROM is the zippiest thing i've ever been on! And that too at just a top clockspeed cap of 1 GHz! I haven't seen that kind of performance with other ROMs even at 1.4 GHz!!

I have posted these results for the community in general and for Lowveld in particular, and would like to see something done about three things in general :

1. Fix the sleep !

2. Lower sleep state battery drain.

3. Pleeeeessse, put back the stock icons into the ROM! :p

Hope this is of some use to someone!!