G.T. Power A8 Charger

hi,

i finally bought a seperate battery charger, but i have no idea.

in the manual it says input power cable: DC11 ~18A whatever that means.

do i first connect the power to the charger and let it go on and then connect the battery or do i have to connect the battery before i power on the charger?
my cheap chargers need first power on and then connect the battery. i just want to make sure to not damage anything.

is it possible to connect this charger with power supply to charge or do i have to really always use a car battery?

stupid questions, but i really not had a charger yet, which came without wall battery power supply.

I don't know how much I can help, but I have a Thunder T6 and I turn on the power, set it to type of charge I want and then plug in the batt.

Look over this and see if it helps:

https://myrcguidesforum.forumotion.net/rc-batteries-and-chargers-f22/thunder-ac6-and-t6-battery-chargers-t553.htm






Donnie D

Donnie D wrote:

I don't know how much I can help, but I have a Thunder T6 and I turn on the power, set it to type of charge I want and then plug in the batt.

Look over this and see if it helps:

https://myrcguidesforum.forumotion.net/rc-batteries-and-chargers-f22/thunder-ac6-and-t6-battery-chargers-t553.htm






Donnie D

what about a wall battery power supply?
what does input power cable: DC11 ~18A tell me?

GaryX1001 wrote:

Donnie D wrote:

I don't know how much I can help, but I have a Thunder T6 and I turn on the power, set it to type of charge I want and then plug in the batt.

Look over this and see if it helps:

https://myrcguidesforum.forumotion.net/rc-batteries-and-chargers-f22/thunder-ac6-and-t6-battery-chargers-t553.htm






Donnie D

what about a wall battery power supply?
what does input power cable: DC11 ~18A tell me?

I would think it means 11 volts DC at 18 Amp. Seems like high amperage, you probably won't find a wall power supply capable of 18 Amps. You will probably need a seperate AC to DC power supply capable of supplying at least 18 Amps.

Hope this helps.

cgetman02 wrote:

GaryX1001 wrote:

Donnie D wrote:

I don't know how much I can help, but I have a Thunder T6 and I turn on the power, set it to type of charge I want and then plug in the batt.

Look over this and see if it helps:

https://myrcguidesforum.forumotion.net/rc-batteries-and-chargers-f22/thunder-ac6-and-t6-battery-chargers-t553.htm






Donnie D

what about a wall battery power supply?
what does input power cable: DC11 ~18A tell me?

I would think it means 11 volts DC at 18 Amp. Seems like high amperage, you probably won't find a wall power supply capable of 18 Amps. You will probably need a seperate AC to DC power supply capable of supplying at least 18 Amps.

Hope this helps.

i was looking for a power supply but they sell this .... very expensive, so i decided to go the cheap way

i build a cable going from my computer to the charger, using banana pins, works very well now.

how much A can i put in the battery while charging? i read 1C is max!?

my charger provides charge rates: 0.1A - 7A
discharge rates: 0.1A - 5A

cycle times ... ??

thanks for any info

Yeah, better do not exceed 1C while charging lipo batteries

ok, i have charged all my batteries now @0.8A

3s 11.1A 1600mah from 3.5v to 4.2v in ~78min. that seems to be alot faster compared to my old Art-Tech charger.

i flew all batteries empty with my jet, the batteries had more power, the jet flew faster.

i will test my heli batteries tomorrow, i hope i see a difference there too.

GaryX1001 wrote:

ok, i have charged all my batteries now @0.8A

3s 11.1A 1600mah from 3.5v to 4.2v in ~78min. that seems to be alot faster compared to my old Art-Tech charger.

i flew all batteries empty with my jet, the batteries had more power, the jet flew faster.

i will test my heli batteries tomorrow, i hope i see a difference there too.

1C charge rate for the above battery would be 1.6A. You will get even a faster charge. At .8A charge rate (1/2C) you will be easier on your batteries. They will probably last longer. I'm impatient, I charge at 1C for all of my batteries.

cgetman02 wrote:

GaryX1001 wrote:

ok, i have charged all my batteries now @0.8A

3s 11.1A 1600mah from 3.5v to 4.2v in ~78min. that seems to be alot faster compared to my old Art-Tech charger.

i flew all batteries empty with my jet, the batteries had more power, the jet flew faster.

i will test my heli batteries tomorrow, i hope i see a difference there too.

1C charge rate for the above battery would be 1.6A. You will get even a faster charge. At .8A charge rate (1/2C) you will be easier on your batteries. They will probably last longer. I'm impatient, I charge at 1C for all of my batteries.

i dont really know how to calc all these settings, but as far i can follow this:

1C = mah/1000 ?

so charging a 2200mah battery at 2.2A is ok?
how many cells the battery has does not matter?
when i get a 6s with 3700mah so i charge it with 3.7A to charge at 1C?

Yeah, you are right

P3tras wrote:

Yeah, you are right

ok, i got it

You have a correct understanding of C rate. My charger asks me for charge rate and S#, which is number of cells. I don't know about other chargers.

It is exactly the same on my charger