battery upgrade?

[LD71]

found a site that shows this as a battery upgrade for the phantom:
DJI Phantom Battery Upgrade Thunder Power RC 2700mAh 3S/3-Cell Lithium Polymer
http://www.rctoys.com/rc-products/DJI-BATT-UPGRADE.html?gclid=CO72mtiZ4LkCFYwWMgodqnoASw

has any one tried these? good idea or bad?

any info would be appreciated before spending the 55 bucks per battery.

 

[thetac]

I have two 2500 and just got these...i like them and pound for pound there is not better out there

 

[MrMediaGuy]

Tough call. I just got two and flew them over the weekend. (Phantom, Zenmuse, Skylark OSD, Immersion 600mw TX). I got my first-level battery flash at exactly the same voltage and mAh consumed (about 1,300) as I get with the stock battery -- about 5 mins and 5 seconds into flight. Obviously there is a lot of capacity left in the battery, but all the extra gear brings the voltage drop down more than the 0.6 drop programmed into the NAZA by default.

I'm going to test fly more next weekend to see exactly how long she will fly *after* the first-level flash and then see if I can reset my voltage alarms lower without risk. I have a calibrated OSD so I can see in real time that I'm not taking more out of the packs than I should (75% or so). Just not sure how the ESCs and NAZA will react if I fly to a lower voltage, even though there is plenty of capacity left.