PDA

View Full Version : R1 Wurks 990


rajiex
2010.04.28, 09:48 AM
I cannot charge these batteries any higher than 700. They seem to peak out. Is it just these batteries or all of them. I bought them to race with and my Orion 900s seem better and peak at 1000. Am I doing something wrong. I charge at 1.0 Amp and they were broken in before every using them. Also what batteries are good for an AWD since I can get a good run time.

dvsstrike
2010.04.28, 12:33 PM
have you discharged them? mine peak out aot 950-1000mah at 1.5 amp charge on my pulsar with threshold at 5mv

rajiex
2010.05.06, 07:18 PM
I am using the MAHA 9000. I contacted Steve at R1 Wurks and explained what is happening. I have tried discharging them and recharging at 1A but the best I can get on 990 is 710. Steve says to charge straight from the box instead of recycling.

I dont thinks it is the charger because I can peak my Orions at 900 or better.

R1WURKS
2010.05.07, 03:22 PM
Raj, If youe still experiencing the same things that we talked about over the phone, just call me back and im sure i can resolve whatever issue you are having.

Steve
818 731 1075

Chad-Nelson
2010.11.22, 07:26 PM
Raj, If youe still experiencing the same things that we talked about over the phone, just call me back and im sure i can resolve whatever issue you are having.

Steve
818 731 1075

Hi steve want to thank you for the batteries,the batteries that help me win the worlds gt mod,pan mod,and stock.the batteries stay consistant the whole race thank you:D

Mike Keely
2010.11.22, 08:08 PM
Hi Chad, what amp rate do you charge at?

lfisminiz
2010.11.22, 08:34 PM
Hi Chad, what amp rate do you charge at?

Chad, that would be helpfull. I have some of the 750s and 990s. What do you recomend.


LARRY

yasuji
2010.11.22, 09:04 PM
chad and i both only charge r1 990 @ 1 amp:D

Chad-Nelson
2010.11.22, 09:51 PM
Chad, that would be helpfull. I have some of the 750s and 990s. What do you recomend.


LARRY

larry and mike 1 amp only

lfisminiz
2010.11.23, 04:33 AM
larry and mike 1 amp only

Thanks Chad/Grant. Do you only charge at 1 amp for stock also?

babstar
2010.11.23, 02:29 PM
I have the same problem with these batteries. And like you I use the MAHA 9000. Maybe the problem is with the MAHA?

rensuchan
2010.11.23, 03:55 PM
I have two sets of these... they're not new out of the box though, they've been used for about 4 months now.

One set is mid to upper 600's for mAh... the other is all mid 700's mAh (measured using a LaCrosse BC-700 charger)

I think I might have killed them off a bit early just from bad care / using a cheap duracell 1 hour charger when I first got them, but just trying to compare numbers. 736 is the lowest number on the better set.

rajiex
2010.11.23, 04:22 PM
I have two sets of these... they're not new out of the box though, they've been used for about 4 months now.

One set is mid to upper 600's for mAh... the other is all mid 700's mAh (measured using a LaCrosse BC-700 charger)

I think I might have killed them off a bit early just from bad care / using a cheap duracell 1 hour charger when I first got them, but just trying to compare numbers. 736 is the lowest number on the better set.

You are lucky I have four sets. best single battery is 812 and worst one is 535. Luckily I made one set that all peak between 740-749. I have set that is between 535-560, I use them on the Atomic R to tame the motor. Steve at R1Wurks did call me and we discussed how I charged them and offered to change the batteries. I am a bubble C & B driver, so I it really did not matter to me. One thing I found odd, is that the box said 990 but the batteries were labeled 750. I checked with all the other drivers, 750 have a black face while the 990s are white.

rajiex
2010.11.26, 10:13 AM
After buying a 5th set of 990s, I finally got one that peak all 930 and up.. Is there a way to bring life or refresh my other 990s to peak what they are supposed to or should I just throw them away. Dont know what to do. Must have gotten a bad batch since they were all purchased within one week of each other.