Lipo Batteries. 10C 20C 30C 40C 50C?

[tish]

Hi all,

Newbie here, i did a rough scan on first few pages and didnt see any similar questions.

2200mah 3s 20C

3s - 3 cells pack

20C - Discharge ... but still dont understand?

If i were to buy a rc plane, how do I know which C rating to get? 10C 20C 30C?

Please advise Thanks

[tish]

got my answer here: http://radiocontrolzone.com/showthread.php?p=2462605


What is C in relation to batteries?

C ratings are simply a way of talking about charge and discharge rates for
batteries.

1C, = 1 time the rated mah capacity of the battery. So if you charge your
650 mah pack at 1C, you charge it a 650 miliamps, or .650 amps.

1C on a 1100 pack would be 1.1 amps.

2 C on your 1100 pack would be 2.2 amps

Motor batteries are often rated in Discharge C and charge C.

So a 1100 mah pack (1.1 amp hour) might be rated for 10C discharge, so you
can pull 11 amps ( flow ) without damaging the battery.

Then it might be rated at 2C charge rate (flow), so you charge it at 2.2
amps (2200 mah)

How did I do? Things clearing up?

If you have a 500 mah pack - any kind - and it is rated at 16C that means it
can deliver 8 amps.

If you have a 1000 mah pack - any kind - and it is rated at 8C that means it
can deliver 8 amps.

If you have a 1000 mah pack - any kind - and it is rated at 12C that means
it can deliver 12 amps

If you have a 1500 mah pack - any kind - and it is rate at 8C that means it
can deliver 12 amps

If you have a 1500 mah pack - any kind - and it is rated at 20 C that means
it can deliver 30 amps.

If you have a 3000 mah pack - any kind - and it is rated at 10 C that means
it can deliver 30 amps.

So, if you need 12 amps you can use a pack with a higher C rating or a pack
with a higher mah rating to get to needed amp delivery level.

[skywalker1955]

got my answer here: http://radiocontrolzone.com/showthread.php?p=2462605


What is C in relation to batteries?

C ratings are simply a way of talking about charge and discharge rates for
batteries.

1C, = 1 time the rated mah capacity of the battery. So if you charge your
650 mah pack at 1C, you charge it a 650 miliamps, or .650 amps.

1C on a 1100 pack would be 1.1 amps.

2 C on your 1100 pack would be 2.2 amps

Motor batteries are often rated in Discharge C and charge C.

So a 1100 mah pack (1.1 amp hour) might be rated for 10C discharge, so you
can pull 11 amps ( flow ) without damaging the battery.

Then it might be rated at 2C charge rate (flow), so you charge it at 2.2
amps (2200 mah)

How did I do? Things clearing up?

If you have a 500 mah pack - any kind - and it is rated at 16C that means it
can deliver 8 amps.

If you have a 1000 mah pack - any kind - and it is rated at 8C that means it
can deliver 8 amps.

If you have a 1000 mah pack - any kind - and it is rated at 12C that means
it can deliver 12 amps

If you have a 1500 mah pack - any kind - and it is rate at 8C that means it
can deliver 12 amps

If you have a 1500 mah pack - any kind - and it is rated at 20 C that means
it can deliver 30 amps.

If you have a 3000 mah pack - any kind - and it is rated at 10 C that means
it can deliver 30 amps.

So, if you need 12 amps you can use a pack with a higher C rating or a pack
with a higher mah rating to get to needed amp delivery level.

I still dont understand lol.

[sherchoo]

Which part you don't understand?

To simply put it, if you have a 20C 2200mAh (or 2.2Ah) battery, it can put out 44A. How I get this number is:

2.2A X 20 = 44A.

or for a 35C 1800mAH (or 1.8Ah) battery, it can put out 63A.

1.8A X 35 = 63A.

[skywalker1955]

Which part you don't understand?

To simply put it, if you have a 20C 2200mAh (or 2.2Ah) battery, it can put out 44A. How I get this number is:

2.2A X 20 = 44A.

or for a 35C 1800mAH (or 1.8Ah) battery, it can put out 63A.

1.8A X 35 = 63A.

When you say Put Out? What does it mean in laymans term?

[zennith]

There are video (youtube.com) talks abt C's in lipo battery, do check it out.




Anyway I will strongly recomend below video (lipo danger...) do watch it.

http://www.youtube.com/watch?v=-DcpANRFrI4&feature=related

http://www.youtube.com/watch?v=773yPtIsl-0&feature=related

http://www.youtube.com/watch?v=LD0-2CaRDJk&feature=related

http://www.youtube.com/watch?v=2-S2lvYQcK8&feature=related