[G2 and Desire Z Accessories] worldestroyer:
Hello everyone!

I've spent the past week doing as much research as possible into what type of battery to buy for my G2 and i've come across alot of information to say the least. Alot of opinions, alot of useless data, and some useful data. I just wanted to summarize this info for everyone. And add any new information that people post in the thread below, including battery life data.

Popular Batteries:

- The Mugen 1800mAh - $45 (1400mAh in testing)

- The Senido 1750mAh - $50 (1400mAh in testing)

- The HTC 1500mAh 35H00123-11M (-00M).. Also known as the TP2/EVO battery - $7 (1500mAh in testing)

- The CHICHITEC 1800mAh - $20/each or $40 for 2 + Charger (untested)

Research:

- Mugen and Seido seem to have EXTREMELY inconsistent mAh ratings, HTC seems to be the most consistent.

- On the other hand, trying to compare these battery assuming constant maximum power draw is a little unfair.

The one thing that seems constant is that HTC's battery's perform as expected in every environment and over time, whereas the third partys seem to be able to pull values closer (somewhat) to what they advertise under certain conditions. Not to mention that we have no knowledge regarding the long-term affects of the 'tuning' that these third party companies have done.

We gotta realize that most battery's are using the same cell or the same knock-off cell, and we can't really expect to much of an increase in mAh in this battery form-factor.

Installation Issues:

A lot of these battery's will need to be modified to fit our phones in one way or another as they're meant for the EVO 4G/Incredible/TP2/MyTouch3gSlide/CDMAHero.. Even the ones that are labeled as "G2 Compatible" might not be as a lot of the 'higher capacity' cells have identical dimensions.

Removing the Wrapper around the battery might assist with door bulge

If you feel like you have to aggressively 'wedge' the battery in then you might want to remove/modify the little nub's at the bottom of the battery near the contacts using nail clippers/dremel/knife. Otherwise you run the risk of damaging the cell-side charging contacts.

Some of the hardcore guys in here have sanded down the battery to have a good fit

The 'fit' differs from phone to phone depending both on the dimensions of each specific battery (not the actual brand or company, but each individual battery seems to be a little bit different) and the G2 Door.

If you leave the door bulging indefinitely it might damage the door in some way, it's recommended that you remove the door and just use a case if it's a major problem for you.

Tips:

- After installing the new battery, remember to reset the battery calibration through your recovery. This affects how many times you feel the need to "cycle it through" before achieving optimal battery life.

- Don't believe the temperature sensor on 3rd Party batteries

- Individual "Before and After" stories are cool, but not that useful considering all the variables involved with the hardware, the radio & signal, the software, and the human being (placebo affect). Aggregating all the data together does give us some picture of whats going on.

- The best tell for battery quality is the weight of the battery compared to your stock one, although this is not a guaranteed method.

Conclusion

After reading through as many threads as I could find regarding this topic, It seems that the CHICHITEC batteries have come to be the most popular across all these HTC phones. While the 1500mAh HTC EVO battery seems like the best deal with the most consistent power output.

The average perceived benefit using these batteries seems to be between 30-20%.

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All Corrections Welcome, All Data Welcome!