Team Much-More cell master v1
12-16-2004, 11:50 AM
#138
Originally posted by nnick
At the Hong Kong's on-line store around 110 USD
Nick
At the Hong Kong's on-line store around 110 USD
Nick
12-16-2004, 12:41 PM
#141
Ooups, you are right it's 140USD!! I bought mine for RCModels too.
110USD is the power supply which I also bought it from HK!
Try also www.hobbymania.com.hk
Sorry
Nick
110USD is the power supply which I also bought it from HK!
Try also www.hobbymania.com.hk
Sorry
Nick
Last edited by nnick; 12-16-2004 at 01:01 PM.
12-16-2004, 05:32 PM
#142
Re: Re: Cut off temperature
For race, I recommend to set 48~52degree C for GP3300 under 18-25 degrees Celcious ambient.
That seems a bit overcharging, but always show much punch during race.
Atsushi, Karn and Jilles also set 52degree for GP3300 in Thai(Reedy race of Asia).
Temp sensor comes with Cell master is very accurate than any other ones because it is based on the cell' surface temp.
If you check each cell's temperature with Infrared thermometer when charging terminating is closing, You'll see each temperature is not much different.
The difference of temp between each cell is only 0.5~2degree always(if your battery pack has good condition).
I can say that the difference of temperature 0.5~2 degrees C is "nothing". You don't have to be serious about that.
Battery maker always suggest safe charging way(1C charge 45C temp cut etc..), but racers want "result".
In cold ambient, charging is always terminated by Peak cut.
But in hot condition, battery pack gets hot easily, so you should make sure temp sensor always meets on cell's surface. Then you can expect charge terminating by Peak cut or Temp cut (which one reach first).
Ryan
That seems a bit overcharging, but always show much punch during race.
Atsushi, Karn and Jilles also set 52degree for GP3300 in Thai(Reedy race of Asia).
Temp sensor comes with Cell master is very accurate than any other ones because it is based on the cell' surface temp.
If you check each cell's temperature with Infrared thermometer when charging terminating is closing, You'll see each temperature is not much different.
The difference of temp between each cell is only 0.5~2degree always(if your battery pack has good condition).
I can say that the difference of temperature 0.5~2 degrees C is "nothing". You don't have to be serious about that.
Battery maker always suggest safe charging way(1C charge 45C temp cut etc..), but racers want "result".
In cold ambient, charging is always terminated by Peak cut.
But in hot condition, battery pack gets hot easily, so you should make sure temp sensor always meets on cell's surface. Then you can expect charge terminating by Peak cut or Temp cut (which one reach first).
Ryan
Originally posted by Cole Trickle
Hello Ryan
I really appreciate to see a company reprensative talking about charging here - there so many myths and ghost, when it's about charging.
Now, I'm curious about where the above temperatures came from?
Do you have the same numbers, when ambient temperature is around 18-25 degrees celsius?
Also, what about GP cells? I tend to say most people are using GP's...
Thanks.
Hello Ryan
I really appreciate to see a company reprensative talking about charging here - there so many myths and ghost, when it's about charging.
Now, I'm curious about where the above temperatures came from?
Do you have the same numbers, when ambient temperature is around 18-25 degrees celsius?
Also, what about GP cells? I tend to say most people are using GP's...
Thanks.
Last edited by Ryan Lee; 12-16-2004 at 05:38 PM.
12-16-2004, 05:46 PM
#143
Cut off way
I recommend peak cut always, but under hot condition, capacity limits and temp limit should be set for safety.
Originally posted by nnick
In general Ryan, you recommend usign the temp cut off instead of peak detect right?
Why is that?
Nick
In general Ryan, you recommend usign the temp cut off instead of peak detect right?
Why is that?
Nick
12-16-2004, 07:28 PM
#144
Tech Adept
Hi Ryan
Would you pls to confirm the next batch shippment date to Hong Kong.
Kind Regards
Anthony
Go2best
Would you pls to confirm the next batch shippment date to Hong Kong.
Kind Regards
Anthony
Go2best
12-16-2004, 08:00 PM
#145
Next batch
Next batch will be started in the middle of Jan.
For exact shipping date, pls contact Mr.Samuel Chiu at International Hobby.
Thanks,
For exact shipping date, pls contact Mr.Samuel Chiu at International Hobby.
Thanks,
Originally posted by G2B Anthony
Hi Ryan
Would you pls to confirm the next batch shippment date to Hong Kong.
Kind Regards
Anthony
Go2best
Hi Ryan
Would you pls to confirm the next batch shippment date to Hong Kong.
Kind Regards
Anthony
Go2best
12-16-2004, 08:03 PM
#146
Tech Adept
OK , Thanks for your info.
Anthony
Go2best
Anthony
Go2best
12-16-2004, 11:58 PM
#147
Originally posted by nnick
Try also www.hobbymania.com.hk
Try also www.hobbymania.com.hk
12-17-2004, 12:57 PM
#148
I've got a question about the charger...
It's only capable of discharging at 10 amps and most of the battery threads will tell you that discharging below 20amps isn't any good. I've always been suspicious about why you have to discharge at 20amps or more and I'm curious if Hara and company are just using the 10 amps or if they have another discharger they use.
I love the size / features of the Much More charger and power supply and would seriously consider them if only the 20amp or more myth could be debunked. I don't want to buy a seperate discharger because I could just pick that and a couple of Novak chargers for less.
It's only capable of discharging at 10 amps and most of the battery threads will tell you that discharging below 20amps isn't any good. I've always been suspicious about why you have to discharge at 20amps or more and I'm curious if Hara and company are just using the 10 amps or if they have another discharger they use.
I love the size / features of the Much More charger and power supply and would seriously consider them if only the 20amp or more myth could be debunked. I don't want to buy a seperate discharger because I could just pick that and a couple of Novak chargers for less.
12-17-2004, 05:45 PM
#149
Discharging
Many people want to discharge their battery at high rate over 20A, what do they want to see? AVERAGE VOLT.
But I don't think higher average V always means "Punch".
Each cell has different discharging characteristics, so you can't say "same Average V cells mean same charateristics"
If you discharge one battery pack with different dishcharging amp,
you'll see capacity is almost same but average volt changing.
That's why many people want buying high amp dischager.
According to our test, Internel resistance is muchmore reliable.
Lower IR shows always much punch.
Cell master shows very accurate IR.
Low IR means "the voltage recovering speed is very fast"
If two cell's IR are same, that means both has same volt recovering speed.
When I cycle my packs, now I see only capacity and IR.
We doubled the original IR value for showing much differences between each cell.
also I don't have to kill my battery packs with high amp discharging for just seeing "data"
CM's 10A dishcharging never kill your battery, show right capacity and how much punch your pack has with "IR".
If we make CM as 30A discharger, the size will be triple!
Ryan
But I don't think higher average V always means "Punch".
Each cell has different discharging characteristics, so you can't say "same Average V cells mean same charateristics"
If you discharge one battery pack with different dishcharging amp,
you'll see capacity is almost same but average volt changing.
That's why many people want buying high amp dischager.
According to our test, Internel resistance is muchmore reliable.
Lower IR shows always much punch.
Cell master shows very accurate IR.
Low IR means "the voltage recovering speed is very fast"
If two cell's IR are same, that means both has same volt recovering speed.
When I cycle my packs, now I see only capacity and IR.
We doubled the original IR value for showing much differences between each cell.
also I don't have to kill my battery packs with high amp discharging for just seeing "data"
CM's 10A dishcharging never kill your battery, show right capacity and how much punch your pack has with "IR".
If we make CM as 30A discharger, the size will be triple!
Ryan
Originally posted by mushu
I've got a question about the charger...
It's only capable of discharging at 10 amps and most of the battery threads will tell you that discharging below 20amps isn't any good. I've always been suspicious about why you have to discharge at 20amps or more and I'm curious if Hara and company are just using the 10 amps or if they have another discharger they use.
I love the size / features of the Much More charger and power supply and would seriously consider them if only the 20amp or more myth could be debunked. I don't want to buy a seperate discharger because I could just pick that and a couple of Novak chargers for less.
I've got a question about the charger...
It's only capable of discharging at 10 amps and most of the battery threads will tell you that discharging below 20amps isn't any good. I've always been suspicious about why you have to discharge at 20amps or more and I'm curious if Hara and company are just using the 10 amps or if they have another discharger they use.
I love the size / features of the Much More charger and power supply and would seriously consider them if only the 20amp or more myth could be debunked. I don't want to buy a seperate discharger because I could just pick that and a couple of Novak chargers for less.
Last edited by Ryan Lee; 12-17-2004 at 05:53 PM.
12-17-2004, 05:51 PM
#150
Re: Discharging
Originally posted by Ryan Lee
Many people want to discharge their battery at high rate over 20A, what do they want to see? AVERAGE VOLT.
But I don't think higher average V always means "Punch".
Each cell has different discharging characteristics, so you can't say "same Average V cells mean same charateristics"
If you discharge one battery pack with different dishcharging amp,
you'll see capacity is almost same but average volt changing.
That's why many people want buying high amp dischager.
According to our test, Internel resistance is muchmore reliable.
Lower IR shows always much punch.
Cell master shows very accurate IR.
Low IR means "the voltage recovering speed is very fast"
If two cell's IR are same, that means both has same volt recovering speed.
When I cycle my packs, now I see only capacity and IR.
We doubled the original IR value for showing much differences between each cell.
also I don't have to kill my battery packs with high amp discharging for just seeing "data"
CM's 10A dishcharging never kill your battery, show right capacity and how much punch your pack has with "IR".
If we make CM as 30A discharger, the size will be triple!
Ryan
Many people want to discharge their battery at high rate over 20A, what do they want to see? AVERAGE VOLT.
But I don't think higher average V always means "Punch".
Each cell has different discharging characteristics, so you can't say "same Average V cells mean same charateristics"
If you discharge one battery pack with different dishcharging amp,
you'll see capacity is almost same but average volt changing.
That's why many people want buying high amp dischager.
According to our test, Internel resistance is muchmore reliable.
Lower IR shows always much punch.
Cell master shows very accurate IR.
Low IR means "the voltage recovering speed is very fast"
If two cell's IR are same, that means both has same volt recovering speed.
When I cycle my packs, now I see only capacity and IR.
We doubled the original IR value for showing much differences between each cell.
also I don't have to kill my battery packs with high amp discharging for just seeing "data"
CM's 10A dishcharging never kill your battery, show right capacity and how much punch your pack has with "IR".
If we make CM as 30A discharger, the size will be triple!
Ryan