Batteries
 

Hey guys. I was looking at batteries and realise that i couldn't do that without your help. First of all, as i was looking in Amain, i found 2 Align batteries and didn'\t know what a thing is. Look at those 2:

http://www.amainhobbies.com/product_...ducts_id/11822

http://www.amainhobbies.com/product_...oducts_id/9305

The only difference of those two is that in the name. The first says 22C and the other 16C. What is the difference. I read the note and can't undertsand.

Also, the note says that if i over-discharge or over-charge or whatever else, it may burst. I saw LiPOs bursting and is not a good show at all. So you guys, can you tell me what i must do with LiPOs? I don't have a clue. I never ALMOST involved with electric and is just too difficult to start without hve an idea.:eek:

RE: Batteries
 

The C value indicates how much current the battery can supply. Basically multiply the C value by the capacity to get the current.

A 22C 2100mAh battery can produce 22 * 2100 = 46200mA or 46.2A
A 16C 2100mAh battery can produce 16 * 2100 = 33600mA or 33.6A

You want the battery to be able to supply at least as much current as the ESC requires. If you're using a 35A or 40A ESC for example, you'll want the 22C battery over the 16C battery. If you're using a 30A or less ESC the 16C battery will work, 22C is more than you need but will work also.

To avoid overcharging a lipo, just use a good lipo charger and remove it when it's done charging (usually about 1 hour when charging at a 1C rate, which is recommended for most batteries). Most chargers will shut off automatically when full charged is reached but it's a good idea to not leave them unattended, don't leave them on the charger over night, don't leave the house while charging etc.

To avoid over-discharging, simply stop as soon as you start to notice the power dropping. Don't run it until the heli won't fly any more. Some people time a few flights to get an idea how long the battery will last then set a timer in the TX and land when the time is up.

RE: Batteries
 

Ok. So, if i use a 30C or less ESC with the 22C battery, it will burnt, right?

RE: Batteries
 

No, not at all ... it just means your battery will be able to supply more amperage than your ESC would need. Having a larger battery like a 22C gives you room to grow in the ESC/motor area.

RE: Batteries
 

But if the motor or something got more amperage than the ESC can handle, can the ESC burn? What you must do to burn the ESC?

RE: Batteries
 

The ESC controls what power the motor draws from the battery.

To burn an ESC your motor could go bad and burn the ESC, or other issues like a short in the wiring could burn the ESC but typically batteries unless they are crappy will not burn your ESC.

If you have a power hungry motor and large ESC with a less than adequate battery (opposite of what you asked) you could do damage, which you will notice by how warm the electrical components are.

RE: Batteries
 

Oh, just a moment. If i have a big strong motor and a big ESC but my battery is...for example a NiMH 650 mAh (that's a little, right?) could do damage? But how? If you have a small battery, the heli will just not hover at all.

RE: Batteries
 

Yeah, but ... the motor and ESC could put too much demand on the battery and cause it to overheat/toast.

In any event, I recommend batteries with at least 20c ... all of mine are 25c and I run a 3500kv motor with a 35A ESC.

RE: Batteries
 

Ok. Hey, do you have any quide for a noob in electrics? I mean something that can explain everything about batteries, ESC, BEC and that things. :eek:

RE: Batteries
 

I wish I did, I just picked up on things I have read from other threads and such. There may be something like that out there, oh and finless videos on Helifreak.com helped.

RE: Batteries
 

Start reading this and other forums and post questions as they form. You'll learn. ;)

RE: Batteries
 

I started already. :eek: