How do I work out how much Wattage I need when buying a charger.

[CyclingSalmon14]

No longer chargeing small batterys so 50W just wont cut it lol...at the same time I dont need a crazy 1KW charger either.

 

How do I work out how much I need.

 

Ill be chargeing batterys no larger than 8AH although likely a lot less. 

 

Plenty of chargers offer 10A but I understand whilst a charger can do this for a 2s or 3s it wont be able to do it for a 6s unless it has enough grunt behind it.

 

The same for a charger that has 20 amps but cant surerply 20A at certain voltages.

 

How do I work out what I need....would a 300W reactor be enough for a 4S 8000mah at 1C / 2C Could I get away with 120W for 1C?

 

(Although I am considering chargeing at 2C...lots of batterys are rated to safely charge at 5C now at the expensive of number of cycles)

 

Sorry need to brush up my RC knoladge i have been put of the game way to long.

[.AJ.]

Amps X voltage give the Watts needed ie

 

8a (8000mah pack) X 16.8v (4s at full voltage) = 134.4 Watts to charge at 1c 

Edited January 29, 2016 by .AJ.

[evssv]

This has been  asked a lot lately. .so y not a sticky  at the top so we can point that way to have a read up.....along  with  all the other  important stuff  they need to read up on also 

Edited January 29, 2016 by evssv

[Noj]

58 minutes ago, .AJ. said:

Amps X voltage give the Watts needed ie

 

8a (8000mah pack) X 16.8v (4s at full voltage) = 134.4 Watts to charge at 1c 

 

Or 268.8w to charge at 2c...

 

 

[CyclingSalmon14]

Perfect one line answer told me evrything I needed to know haha.

 

Perfect thanks Noj and EVSSV