Who charging 20+ amps or more now??
#331
what information are you looking for?
that link from wingracer has a user guide that very comprehensive, with hyperlinked text, and the charge control software is also fully documented.
if anything these are too comprehensive, you have to search for the just bits of interest, but you sure can't say they are incomplete.
that link from wingracer has a user guide that very comprehensive, with hyperlinked text, and the charge control software is also fully documented.
if anything these are too comprehensive, you have to search for the just bits of interest, but you sure can't say they are incomplete.
#333
#334
Tech Regular
iTrader: (3)
Mike
#335
Tech Elite
iTrader: (44)
Ok... I have some questions after cycling the batteries...
I noticed that once the charger is finished the voltage is at 8.43, within 2 mins it drops down to 8.37 and at 20 mins it is down to 8.35.
On the iCharger the max is set to 120% and the voltage cutoff per cell is 4.2..
Any ideas to get keep the voltage up around 8.4 longer?
The IR after 1 cycle dropped from 3.2 to 0.7....
I noticed that once the charger is finished the voltage is at 8.43, within 2 mins it drops down to 8.37 and at 20 mins it is down to 8.35.
On the iCharger the max is set to 120% and the voltage cutoff per cell is 4.2..
Any ideas to get keep the voltage up around 8.4 longer?
The IR after 1 cycle dropped from 3.2 to 0.7....
#336
Tech Regular
iTrader: (3)
I felt like I was living on the edge last night.... the feeling was liberating! I charged my 4200mah pack at 6 amps and not the recommended 4.2 amps! Living on the edge I am! I'm throwing caution to the wind and charging my 2 3800's, 2 4200's, 1 5000, 1 5300, and 1 4000 ALL at 6amps! Seriously though, that's all she's got Captain so I'm stuck at 6 but will continue to be intrigued while subscribed and following this thread. Before reading this thread I was literally charging every one of those at their individual 1C charge rating and it was getting annoying... plus teaching my 9yo to keep this straight between races at the track was a pain.
Mike
Mike
#337
Our discussion here on this thread is safety and correct charging techniques at the max allowed rate that a battery manufacturer has indicated on their packs.
Talked to a newb the other day that saw this thread and wanted to buy a iCharger or PL6 to charge his 2C packs at 20 amps. People don't understand what the max C charge rating on the pack is there for a reason.
#338
Tech Elite
iTrader: (44)
I felt like I was living on the edge last night.... the feeling was liberating! I charged my 4200mah pack at 6 amps and not the recommended 4.2 amps! Living on the edge I am! I'm throwing caution to the wind and charging my 2 3800's, 2 4200's, 1 5000, 1 5300, and 1 4000 ALL at 6amps! Seriously though, that's all she's got Captain so I'm stuck at 6 but will continue to be intrigued while subscribed and following this thread. Before reading this thread I was literally charging every one of those at their individual 1C charge rating and it was getting annoying... plus teaching my 9yo to keep this straight between races at the track was a pain.
Mike
Mike
#339
Ok... I have some questions after cycling the batteries...
I noticed that once the charger is finished the voltage is at 8.43, within 2 mins it drops down to 8.37 and at 20 mins it is down to 8.35.
On the iCharger the max is set to 120% and the voltage cutoff per cell is 4.2..
Any ideas to get keep the voltage up around 8.4 longer?
The IR after 1 cycle dropped from 3.2 to 0.7....
I noticed that once the charger is finished the voltage is at 8.43, within 2 mins it drops down to 8.37 and at 20 mins it is down to 8.35.
On the iCharger the max is set to 120% and the voltage cutoff per cell is 4.2..
Any ideas to get keep the voltage up around 8.4 longer?
The IR after 1 cycle dropped from 3.2 to 0.7....
#340
Tech Elite
iTrader: (44)
So is this normal to drop off that much after a short time?
#341
Tech Regular
iTrader: (3)
You could be living on the edge if your packs are labelled as 1C max charge rate and you go over that.
Our discussion here on this thread is safety and correct charging techniques at the max allowed rate that a battery manufacturer has indicated on their packs.
Talked to a newb the other day that saw this thread and wanted to buy a iCharger or PL6 to charge his 2C packs at 20 amps. People don't understand what the max C charge rating on the pack is there for a reason.
Our discussion here on this thread is safety and correct charging techniques at the max allowed rate that a battery manufacturer has indicated on their packs.
Talked to a newb the other day that saw this thread and wanted to buy a iCharger or PL6 to charge his 2C packs at 20 amps. People don't understand what the max C charge rating on the pack is there for a reason.
#342
Are there any packs left on the market that are truly rated for only 1C? Oh I'm sure there are plenty that might say 1C charge in the paperwork or even on the pack simply because that is the max allowed by ROAR but that doesn't mean the cells can't take more. If that exact same cell is sold without the case as a flight pack, I bet it would say 2 or 3C charge.
#343
Tech Regular
iTrader: (3)
Are there any packs left on the market that are truly rated for only 1C? Oh I'm sure there are plenty that might say 1C charge in the paperwork or even on the pack simply because that is the max allowed by ROAR but that doesn't mean the cells can't take more. If that exact same cell is sold without the case as a flight pack, I bet it would say 2 or 3C charge.
#344
I was under the assumption that this thread didn't differentiate between packs rated for only 1C and those that are higher. 3 of mine are actually rated for higher. One is rated for 2C, and the other 2 are rated for 12c (with the disclaimer of using an "approved" charger). Those last 2 are Thunder Power. In the past I've just charged everything at 1C regardless.
Not Trunigy, Zippy,Gen Ace or your low grade B lipos.
SMC, Trinity, Reedy, Venom all good to go!
#345
Most Lipo packs sold for transmitters, receivers will not be used in high discharge rates and should be charged at 1C. These will come with tiny connectors.
Packs sold for racing and helis that have high C discharge rates also have high charge rates. These packs comes from the factory with 4mm, 5mm and EC5 connectors. A label that indicates the maximum C charge rates should be somewhere on the pack.
Also, high C discharge and high C charge packs also have lower IR. You will see this during the charge cycle. On the race packs, I am seeing 1.9 mega-ohm and less and for transmitter packs, I see readings of 20 mega-ohm.
If there is no max charge label, then charge at 1C.
Packs sold for racing and helis that have high C discharge rates also have high charge rates. These packs comes from the factory with 4mm, 5mm and EC5 connectors. A label that indicates the maximum C charge rates should be somewhere on the pack.
Also, high C discharge and high C charge packs also have lower IR. You will see this during the charge cycle. On the race packs, I am seeing 1.9 mega-ohm and less and for transmitter packs, I see readings of 20 mega-ohm.
If there is no max charge label, then charge at 1C.