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-   -   Amp setting on charger (https://www.rctech.net/forum/rookie-zone/747374-amp-setting-charger.html)

SpoonEK 07-28-2013 01:00 AM

Amp setting on charger
 
Hi Guys!

I just got the Nanotech 2s 5600mah 50C-100C lipo. The lipo is rated "Max charge 8C". What does it mean?

My Muchmore charger requires me to enter the charger power in "Amp". So how much should I enter??

Dave H 07-28-2013 02:00 AM

1C charge rate for a 5600mAh is 5.6 amps. So 8C max is 44.8 amps max in theory anyway.

Probably limited by the charger capability more than the lipo.

Using a balance charge mode and paying attention during the charge is increasingly important at higher charge rates, as everything goes quicker, including potential problems.

F. Mendoza 07-28-2013 07:21 AM

Good explanation. :) Some have explained with too much of the math where I can't follow them. I have done this for a while too. Thanks Dave.

ThePanda 07-28-2013 09:46 AM

for longer battery life be more gentle on charging. charge at a lower c rating. 8c is very high.

SpoonEK 07-28-2013 04:00 PM

I get it. Thank guys!!

SpoonEK 07-29-2013 05:00 AM

How much charge rate would you guys recommend? In term of Amphere.

Hoese37 07-29-2013 06:17 AM

5.6 for a normal charge. I usually do a 2C rate during the day while im racing, so in your case it would be 11.2A. I will always set it back to 1C when i put it in storage mode. Always let your battery sit unplugged for atleast 5min befor charging it. It gives the cells time to even themselves out and let the voltage stabilize.

SpoonEK 07-29-2013 04:07 PM


Originally Posted by Hoese37 (Post 12393271)
5.6 for a normal charge. I usually do a 2C rate during the day while im racing, so in your case it would be 11.2A. I will always set it back to 1C when i put it in storage mode. Always let your battery sit unplugged for atleast 5min befor charging it. It gives the cells time to even themselves out and let the voltage stabilize.

Thank you very much for the help.

shagino 07-30-2013 09:29 AM

I charge at 1C on race days. Unless you're really in a pinch for time, I don't see the benefit.

j sirhc 08-03-2013 11:21 AM

Yup usually charge mine at 1C or lower

ThePanda 08-03-2013 03:26 PM

i think that 1-2c is best if you are not pushed for time, i don't want to prematurely cut down the number of cycles the battery will do.

jk_hop 08-07-2013 02:12 PM


Originally Posted by Dave H (Post 12389811)
1C charge rate for a 5600mAh is 5.6 amps. So 8C max is 44.8 amps max in theory anyway.

Probably limited by the charger capability more than the lipo.

Using a balance charge mode and paying attention during the charge is increasingly important at higher charge rates, as everything goes quicker, including potential problems.

This was a very helpful explanation!

nickdawg18 08-08-2013 04:51 AM

I NEVER charge above 1c. I don't care what the case on the battery says.

EricW 08-08-2013 07:08 AM

Here's a real easy way to figure out charge rates.

If you have a 6000Mah battery and it's recommended to charge it at "1c" just move the decimal point on the Mah rating to the left 3 places:

Example: 4800(mah) ---> 4.800 amps

Exampe: 5600.(mah) ---> 5.600 amps

Example: 6000.(mah) ---> 6.000 amps

Example: 8000.(mah) ----> 8.000 amps

Example: 10000.(mah) ---> 10.000 amps

Now if you want to charge the batter at 2c just multiply that second number by two.

Example: 6000.(mah) ---> 6.000 amps x 2 = 12.000amps (thats a 2c charge rate for a 6000 mah battery.

nickdawg18 08-08-2013 09:03 AM


Originally Posted by EricW (Post 12426397)
Here's a real easy way to figure out charge rates.

If you have a 6000Mah battery and it's recommended to charge it at "1c" just move the decimal point on the Mah rating to the left 3 places:

Example: 4800(mah) ---> 4.800 amps

Exampe: 5600.(mah) ---> 5.600 amps

Example: 6000.(mah) ---> 6.000 amps

Example: 8000.(mah) ----> 8.000 amps

Example: 10000.(mah) ---> 10.000 amps

Now if you want to charge the batter at 2c just multiply that second number by two.

Example: 6000.(mah) ---> 6.000 amps x 2 = 12.000amps (thats a 2c charge rate for a 6000 mah battery.

This is exactly how I explain it to people face to face and they look at me like I just tried to get them to do trig or something. I'll admit, I was the same way back when I first started and one day it just clicked.


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