For me IB battery is suck because u need to have a Novak SMART tray. Do u want to buy Novak SMART tray for each of your IB batteries ? when u race, u need to discharge + equalize your battery before charging. As u know SMART tray take a long time to discharge a battery. So u might want to have 2 or 3 of SMART tray to help u. This will cost you more on IB battery maintainence. That's why i say IB battery suck !.
If you use a cheap discharge tray, u have to monitor the IB battery until 0.9v/cell. It's difficult to equalize an IB battery using cheap discharge tray (resistor only tray).
Compare to GP, u can use a cheap discharge tray. No need to monitor, cause GP battery can be discharge until 0.0V (all cells equalized). GP battery won't cause you more on battery maintainence.
IB is a good battery in term of it average voltage which is higher compared to GP. But it need a cheaper discharge/equalize tray. Hope someone can make a 0.85V cut-off discharge tray (no need to vary the cut off value). I hope Axxis-racing is doing R&D on this. Novak Smart tray is too expensive. Good luck guys, have a nice day.
I am not going to get into anargument here because I respect your opinion. However, let me tell you that you are wrong or just misinformed.
First, you do not need to cycle or discharge the IBs to perform. It is actually better if you do not touch them if you do not know how to discharge batteries the right way.... ( IA M NOT TALKING ABOUT YOU...I AM USING YOU AS A FIGURE OF SPEECH, OK!!)
Also, just so that you will know, if you look at a GP3700 discharge curve vs an IB3800 curve, the overall voltage is a few millivolts higher in the GP... The IBs perform better because of other issues, not voltage.
Do you know the real difference between a 1.170 cell vs a 1.199 cell... I will tell you.
ALL MOTORS HAVE A Kv CONSTANT...FOR EXAMPLE, MOST STOCK MOTORS HAVE A Kv OF AROUND 3.7 (3700 RPMS/VOLT) SO HERE IT GOES...A 1.170 CELL WILL GENERATE 4329 RPMS...AND A 1.199 CELL WILL GENERATE 4436 RPMS... A DIFFERENCE OF ONLY 107 RPMS. IN A 6 CELL PACK THAT IS ONLY 642 RPMS...NOT NOTICEABLE...WHEN THE MOTOR TURNS 26640 RPMS AT 7.2 VOLTS... A DIFFERENCE OF ONLY 2.4% a MOTORS PERFORMANCE IS DEFINED BY CURRENT, NOT VOLTAGE...AS LONG AS THE BATTERIES CAN SUPPLY THE NEEDED CURRENT YOU WILL DEVELOP TORQUE, AND THAT IS WHAT MAKES ELECTRIC MOTORS WORK. ALL MOTORS HAVE A Kt CONSTANT...WHICH IS THE TORQUE CONSTANT...A MOTORS TORQUE IS DEFINED BY THE CURRENT IT DRWAS TIMES THE Kt CONSTANT...
As you can see, there is not much difference in performance when we are talking volts. As long as you have good batteries with a good voltage and the batteries can deliver the current requested by the motor the performance will be there. There is a higher voltage drop across your wiring that the few millivolts from the battery. Just measure the voltage at your batteries and at the motor terminals... YOu will be surprised when you will see the voltage drop across the wiring...even badly soldered solder bars develop a large voltage drop, muliply that by 7 and it gets up there....
You are comparing two different issues here...one has to do with battery performance and the other with the cost of dischargers/equalizers.
Let me tell you that the majority of the dischargers/.equalizers out there do not work like they should. The persons that are designing them are not taking into consideration the properties of the new cells. Novak and Tekin are both engineers and their dischargers are better designed than others.
This is not a plug for my products, but Axxis Racing is coming out with dischargers/equalizers that are specifically designed for the GP and IB cells. And yes, they are set at the right cutoff for deep equalization or quick equalization...there are differences.
If you want to use the Integy 030 and get better performance, just open it and cut one of the three resistors in each cell. This will lower the current to a safer level (at 2/3 or around 22 Amps) and you should get better discharge performance...its that simple... If you want to use it to equalize, just cut two of the resistors...the current will still be a bit high (above 10 A), but you will get better equalization at this current level. Our trays will have a voltage cutoff level and will also sound and alarm when the cycle is done, that way you do not have to be watching the tray while you work on your cars at the race track...
Now regarding the batteries that are only getting 600mah..it sound like they are permanently damaged. I do not know where you live, but I will be glad to test them for you if you send them to our offices. We will analyze each cell and tell you exactly what is wrong with them...Hopefully we can help you save your battery pack.
I have said it many times and I will continue saying it...It is better not to discharge or equalize cells if you do not have the right equipment or knowledge. At least if you do not overdischarge, you will not damage the cells.
Also, Axxis Racing works with both GP and IB, and each cell has its merrits, advantages, and disadvatages. But to say that the IBs S... because of the discharge issue is just plain WRONG.
I have been working with and designing batteries for over 25 years...I do know them inside out...and your coments are wrong.
Also, the smart tray is not the ONLY way to discharge IBs...it just happens to be that Novak makes a good discharger (so does TEKIN). Also, to get good equalization from any cell, whether an IB or GP, it takes over 10 hours...you have to do it at a very low discharge rate, otherwise the cells will not be equal... At high currents you do not fully equalize cells... that is wrong information.
To equalize cells you have to do it at a maximum current level of 4 amps and the current should continue droping as the voltage drops...this is the ONLY way to prevent damage and get the batteries to equalize. Once you get down to the 0.3 volt range you do not want to pull more than 150 milliamps in order to get good eq.
Also, there is NOTHING I can do to lower the IR of a damaged cell... I am not a miracle worker...
There are techniques to lower the IR of a GOOD cell, but it takes the right equipment to do it since you need to pulsate a current through the cells to achieve this. If your batteries have irreversible damage there is nothing that can be done.
Just try what I told you a few more times to see if the batteries come back to life. Sometimes it can take up to 5 cycles for this to take place...