Fukuyama Batteries
02-27-2004, 09:48 AM
#3871
Originally posted by Maj. Teeth
Thanks for the suggestions. I'll look into it and see what I can do. I'm sure we can always improve.
Dan
Thanks for the suggestions. I'll look into it and see what I can do. I'm sure we can always improve.
Dan
Regards
02-27-2004, 09:57 AM
#3872
Re: Re: 3300 Longevity
Originally posted by MikeR
You know what's strange? I've been running my 3 packs of GP3300 since REEDY of last year and they are still running strong! I run them twice a race day charged at 5.5amps on the hot CA parking lots both 19turn and recently 5 minute mod. I've won a national with them, took them to japan and raced them to death and I'm going to run them again this week in modified. One thing the matcher says not to do with these cells is equalize them so I haven't which could be the key to the failure of your cells. In fact I don't discharge my packs at all since they have to be stored with some charge in them any way.... Just throwing out some input.
You know what's strange? I've been running my 3 packs of GP3300 since REEDY of last year and they are still running strong! I run them twice a race day charged at 5.5amps on the hot CA parking lots both 19turn and recently 5 minute mod. I've won a national with them, took them to japan and raced them to death and I'm going to run them again this week in modified. One thing the matcher says not to do with these cells is equalize them so I haven't which could be the key to the failure of your cells. In fact I don't discharge my packs at all since they have to be stored with some charge in them any way.... Just throwing out some input.
keep up the good work dan. your batteries got me bumped up!
02-27-2004, 02:04 PM
#3874
Not equalizing. Sounds like hooea.
02-27-2004, 02:46 PM
#3875
Re: Re: 3300 Longevity
Originally posted by MikeR
You know what's strange? I've been running my 3 packs of GP3300 since REEDY of last year and they are still running strong! I run them twice a race day charged at 5.5amps on the hot CA parking lots both 19turn and recently 5 minute mod. I've won a national with them, took them to japan and raced them to death and I'm going to run them again this week in modified. One thing the matcher says not to do with these cells is equalize them so I haven't which could be the key to the failure of your cells. In fact I don't discharge my packs at all since they have to be stored with some charge in them any way.... Just throwing out some input.
You know what's strange? I've been running my 3 packs of GP3300 since REEDY of last year and they are still running strong! I run them twice a race day charged at 5.5amps on the hot CA parking lots both 19turn and recently 5 minute mod. I've won a national with them, took them to japan and raced them to death and I'm going to run them again this week in modified. One thing the matcher says not to do with these cells is equalize them so I haven't which could be the key to the failure of your cells. In fact I don't discharge my packs at all since they have to be stored with some charge in them any way.... Just throwing out some input.
Like I said, just throwing out some input from my experience- no one has to follow it
02-27-2004, 03:00 PM
#3876
It would seem that not traying your cells that over time they are going to become very unbalanced because of slight differences in IR. It would seem the pack would deteriorate more quickly because some cells would be getting overcharged, while others undercharged.
02-27-2004, 03:30 PM
#3877
I think what Mike is talking about are all the trays out there that take the cells to 0v. By equalizing @ .9v per cell, you are leavng some charge in them. But you're leaving equal charge in them. Not equalizing the packs is better for them than equalizing them with a tray that's going to drop them down to 0v.
02-27-2004, 04:21 PM
#3878
Hello guys, just to let you know there is a new batch of Fukuyama cells in the UK 
Now before you all go asking for 1.17's they've all been pre-ordered, but there may be some available in a few days.
We have lots of 1.15's at a good price and are willing to do deals for large orders of them. These cells are great for practise packs and even club level racing.
Now before you all go asking for 1.17's they've all been pre-ordered, but there may be some available in a few days.
We have lots of 1.15's at a good price and are willing to do deals for large orders of them. These cells are great for practise packs and even club level racing.
02-28-2004, 07:00 AM
#3879
Whats the average time it takes you guys to charge your Fukuyama's?
I'll be charging a 6pack at 4.5 amps and 50mv. What charging time would you guess for that ?
The reason I ask is cause i want to know if my charger false peaks or not.
thanks
I'll be charging a 6pack at 4.5 amps and 50mv. What charging time would you guess for that ?
The reason I ask is cause i want to know if my charger false peaks or not.
thanks
02-28-2004, 09:26 AM
#3880
Usually it takes about 35 to 45 minutes. The best way to know if you're false peaking is look at the capacity (mah) that the battery has taken. You should be getting at least 3300 to 3500 mah. I've seen them charge as high as 3800 mah without getting too hot.
02-28-2004, 09:49 AM
#3881
Originally posted by jkerr0043
Usually it takes about 35 to 45 minutes. The best way to know if you're false peaking is look at the capacity (mah) that the battery has taken. You should be getting at least 3300 to 3500 mah. I've seen them charge as high as 3800 mah without getting too hot.
Usually it takes about 35 to 45 minutes. The best way to know if you're false peaking is look at the capacity (mah) that the battery has taken. You should be getting at least 3300 to 3500 mah. I've seen them charge as high as 3800 mah without getting too hot.
But if charging at 4.5 amp, it would take more then 30 mins to charge more then 3300mah.
02-28-2004, 09:56 AM
#3882
That's pretty common when the cells are brand new. You just want to watch the temp on the first few charges because the voltage may not drop as much and over charge your cells. Just make sure they don't get above 150F. IMO that's even pushing it. Those are good voltage numbers. That's right about where you want them to peak at.
02-28-2004, 10:03 AM
#3883
Originally posted by jkerr0043
That's pretty common when the cells are brand new. You just want to watch the temp on the first few charges because the voltage may not drop as much and over charge your cells. Just make sure they don't get above 150F. IMO that's even pushing it. Those are good voltage numbers. That's right about where you want them to peak at.
That's pretty common when the cells are brand new. You just want to watch the temp on the first few charges because the voltage may not drop as much and over charge your cells. Just make sure they don't get above 150F. IMO that's even pushing it. Those are good voltage numbers. That's right about where you want them to peak at.
WHat do you guys think?
