PDA

View Full Version : Trex 450Se v2 and batteries


MaSt0RaS
05-10-2008, 01:31 PM
Hallo i am new to the hobbie and i wanna ask what batteries to use till what mah

I think its 3s1 till 2500? can i use 4s1 for more flight time?


Thank you..!

mjs3350
05-10-2008, 03:40 PM
4s batteries wouldn't give you more run time. 4s is like 3s with an additional cell in series, so it would give you a higher voltage and more power, but the mah number is what you look at for flight time. the 450 would use 3s batteries, and the higher the mah number, the more flight time, and more $$. buy quality packs with good reputations...from what i've read you really can't go wrong with thunder power, flight power, and kong power. there are other brands too but those are very popular.

also be sure to get a quality balancing charger. cellpro's are nice and not too hard on the wallet. keep in mind that if you want to upgrade to larger electric heli's in the future you'll want to consider that when you buy a charger now, as they can't all charge larger packs.

MaSt0RaS
05-10-2008, 03:46 PM
i will buy 10s cellpro or hyperion duo...
thank you till how many mah can i put to 450???
or how many g can be the batterie"??250 maximum??

HPSOV2
05-11-2008, 06:00 PM
Only buy a 3S battery.
Most people use 3S 2200.
If you want longer flights you can get a 3S 2500, anything bigger than that (3S 3000 for example) is too heavy.

MaSt0RaS
05-12-2008, 03:13 AM
Only buy a 3S battery.
Most people use 3S 2200.
If you want longer flights you can get a 3S 2500, anything bigger than that (3S 3000 for example) is too heavy.

and how much more time shall i have with 2500 3s?

redgiki
05-12-2008, 12:43 PM
and how much more time shall i have with 2500 3s?

What are your priorities? Is your priority high performance, long flight times, or battery pack longevity? These three goals can oppose one another, and vary a TON based on how you have your bird set up. All else being equal, a 2500mAh battery of the same weight would give you 12% more flight time than a 2200mAh battery. That said, all else is usually not equal.

Read some of the LiPo care guidelines on this board to ensure LiPo longevity. Rules of thumb: don't discharge more than 80% of your pack. Don't discharge below 3.2v/cell under load, and return to a resting voltage of right around 3.7v/cell or better on 15C+ packs. Recharge at 1C or lower unless your battery manufacturer says higher rates are OK. Keep the pack below 140 degrees Fahrenheit in flight. Avoid spiking your amp draw above 20C in flight. Set up your power system for a 6-7 minute flight, and set your flight timer a little lower than that. Store your LiPos at less than a full charge and keep them cool in storage. Don't charge above 4.0v/cell in temperatures below 55F. That kind of stuff.

If you're interested in extending your flight duration, read the "Trex Endurance Contest" stickied post in the T-Rex 450 forum.