If you need a spare battery, I'd recommend the MPJ.

[20degrees]

I previously got a mpj 3k mah battery and been using it for a few weeks now. I think they're great for the $20 asking price. I use my phone for mainly music and use it 12hrs a day for play music with headphones. By time I'm done, the mpj has at least 70% battery left. The stock battery has around the same. I can also get around 3hrs screen on time by the end of the day.

I have also noticed the mpj doesn't seem to get as hot while charging or using the g4 like the stock battery does.

I would highly recommend them and for any phone that has a replaceable battery option, I'll buy the mpj from here on out.

You can get them from http://www.mpjbattery.com/mpj-3000m...rizon-vs986-sprint-ls991-h818-us991-f500.html

 

[spacebatt]

Thank you for the recommendation I would like to consider the 6000 batt.

 

[dboone]

Do you have a link for that one?

 

[1901Madison]

I've been using the Hyperion 6000 mah, extended battery and it's absolutely incredible. Makes the phone heavier, but well worth it for me.

 

[sp_1974]

Do you think that mpj batery is safe?? Ican't find site company to insure the authedication..how long are you using this battery??