[T-Mobile myTouch 4G Slide] siani_8:
NEW MUGEN POWER BATTERY INITIAL CHARGING INSTRUCTIONS

1. CHARGE BATTERY FOR 8-12 HOURS

For the first 4-5 charges, please charge the battery in the device for 8-12 hours using the main power adapter and with device turned on (Important: For the first 4-5 charges You Should charge the battery for 8-12 hours, even if your phone is showing that it is fully charged already!).

2. USE DEVICE AS NORMAL

After each charge, please use the device as normal, until device tells you the battery is very low, then recharge.

3. REPEAT 4-5 TIMES

Repeat this process for 4-5 times.

After that you can recharge the battery whenever is suitable for You, and just until your device is showing it is fully charged. Important: NEVER drain the battery completely to 0%.

---------- Post added at 08:14 PM ---------- Previous post was at 07:37 PM ----------

I tried to follow the initial charging instructings as best I could for the first 4 days of use. I took the phone off charge at 6:30 A.M. in the morning and had it back on by 6:30 P.M. (unless noted otherwise) to give it the full recommended 12 hours of charge.

I have no real controlled test for the Mugen Power 1800mah battery; however, I'm going to give a rundown by day of my experience so far with this battery.

I am currently using the Bulletproof ROM and stock Kernel.

For all days so far, the phone has been on the entire time unless specically noted. Also wi-fi, wifi calling, GPS, and bluetooth were enabled the entire time and power saving features remained unchecked in the settings. Screen brightness stayed at setting 1 of 3. My homescreens currently include the Weather widget, Friendstream widget, and Calender Widget.

Day 1: During day 1 of usage, I sent frequent texts to my girlfriend during the day, made a couple of short phone calls, read the news in the morning and checked my email occasionally as well as the XDA Forums. I had a stop on the way home and barely made it to the charger at 6:30.. the phone actually shut down a minute before I got it on charge so on day 1 I got 1 minute shy of 12 hours.

Day 2: The usage on day 2 was about the same as day 1 except I had to turn the brightness up all the way and use the phone heavily for about 15 minutes or so when I got home to drain the battery to 2% and put it back on charge. Again, around 12 hours of my normal usage is fair assesment of day 2.

Day 3: When I woke in the morning I booted into recovery and and reset battery stats. When I rebooted it was showing 93% *shrug* I also dropped my phone during the day and the battery fell out..ooops. Anyway, the phone life seemed to be doing a little better on the third day so I started using it more heavily. I was checking my email frequently, sending frequent texts, checking the XDA forums a lot, updated about 6 apps, checked the news app more than a few times. When I got home at 6:00 I had turn the brightness all the way up and use the phone for about 20 minutes straight to kill it to 2% and get it back on charge for 12 hours.

Day 4: I used the phone as much as I wanted to on the 4th day. I still texted as I usually would, made a couple short calls, checked the news and XDA frequently, took some pictures read the news - all standard stuff. It was Friday and I wasn't worried about getting it on charge by 6:30 so I continued to use it as normal and I made it to 8:30 before it dropped to 2%. Day 4 was 14 hours of continued usage.

I expect under the conditions of normal use I won't get much more than Day 4. I suppose if I wanted to conserve and enable power saving settings, turned off GPS during the day and only enabled bluetooth when I knew I was getting in the car then I might be able to sqeeeze out more. Of course if I played a video game on it I'm sure I'd get a whole lot less.

I am not unpleased with the results of the battery and is probably about what I expected for my my normal usage.