Intellect 3800 cells

[Rtsbasic]

Just to double check, are the Intellect 3800 cells the IB3800's? Anyone have a discharge graph comparing to GP3700?

Looking to order about 40 of these cells soon for a MT, please post if you know a cheap shop to bulk order from :)

Thanks.

[ikraj]

Hi b3racer;

The Intellect 3800s are known in the industry as IB3800s

I sent you a PM regarding the dischsrge curves and the way you should evaluate and compare these batteries.

Axxis Racing (http://axxis-racing.com) distributes and sells the IB3800. I don't think it would be ethical for me to discuss them in an open forum when we also deal with GP and other companies.
I will be more than glad to to pass as much information as you deem necessary to compare these batteries. However, this is not the right platform.

If there is anything I can do to assist you in making an educated decision I will be glad to do so. Also, should you need the batteries we do have them allready.

The IB3800s do look very promissing and we are continuosly testing them in order to find better ways to enhance, charge, and maintain the batteries. I will be more than glad to give you any info as we find better ways to work with the Intellect batteries.

We are allready selling them as we allready know how to enhance the voltage and internal chemestry in order to equalize the cells. Therefore, making them more reliable and perform better not as an individual battery but as a whole pack. Axxis Racing (http://axxis-racing) strives to find better ways to use batteries as a pack not as an individual battery.

ikraj
Axxis Racing (http://axxis-racing.com)

[LasagnaCat]

I don't think it would be ethical for me to discuss them in an open forum

Yet the THREE website plugs were okay. Odd.

(and all in fun, relax) :)

[Rtsbasic]

Thanks, I've sent you a PM about getting some cells. Please respond by email to rtsbasic@yahoo.com - this forum isn't the place to discuss an order.

Going for 2x 18 cell batteries, probably a Schulze isl6-330d charger, or a Great Planes Triton, both should charge an 18 cell pack with no problems given the right power supply (13.8v @ 20 amps should be enough to charge 18 cells at around 4 amps?). Either of these chargers can do lipo as well, useful.

[ikraj]

Thanks, I've sent you a PM about getting some cells. Please respond by email to rtsbasic@yahoo.com - this forum isn't the place to discuss an order.

Going for 2x 18 cell batteries, probably a Schulze isl6-330d charger, or a Great Planes Triton, both should charge an 18 cell pack with no problems given the right power supply (13.8v @ 20 amps should be enough to charge 18 cells at around 4 amps?). Either of these chargers can do lipo as well, useful.

To charge 18 cells you need at least 27v If you charge with 13.8v there is no way that you will get a full charge out of the battery pack. You have to take into consideration that each cell peaks at around 1.5v +/- so if you have 18 cells the minimum voltage that will allow the batteries to peak properly is 27+v. I would actually use a 30-32v power supply to charge an 18 cell pack. Just try it an d you will see the difference. ;)

[Rtsbasic]

The Triton at least has a built in converter thingy so it can charge upto 24 NIMH cells correctly with only 12-15v input, it just draws more amps. I have heard from a couple of people that use it to charge the batts in their planes, gets a very good charge in apparently.

I understand where your coming from, this limitation has stopped me from charging more than 7 cells on a 12v power supply with my Novak Millenium, but these bigger chargers are designed to run off low voltage and just draw lots of power to get the voltage required to peak the cells.

[ikraj]

The Triton at least has a built in converter thingy so it can charge upto 24 NIMH cells correctly with only 12-15v input, it just draws more amps. I have heard from a couple of people that use it to charge the batts in their planes, gets a very good charge in apparently.

I understand where your coming from, this limitation has stopped me from charging more than 7 cells on a 12v power supply with my Novak Millenium, but these bigger chargers are designed to run off low voltage and just draw lots of power to get the voltage required to peak the cells.

b3racer,

I am not familiar with the Triton but you are correct, they can do that. It is done through a DC to DC converter. That is why you need the higher AMP rate. With todays chips it is very easy and inexpensive to build and incorporate a DC-DC coverter. You can also buy them off the shelf from major electronic suppliers. That might be a solution for you with your power supply if it has a high amp rate.

FOR INFO: I use 60 AMP power supllies, thus my P.S's allways run cool and I don't push them to the limit. It is a good practice. I see many people using 4.5-10Amp supplies and try to connect two chargers and then they wonder why the false peaks happen. That is why I am such an advocate to get GOOD power supplies.

BTW, I might be going to the Island in October w/my family. I told you we usually go every year to Europe for 2-4 weeks. If I do go, and if you need anything that I can take for you, I will be glad to do so. I will let you know.

ikraj

PS: I will write to your email address later (tomorrow) on. Is it Ok w/you if I get a hold of you untill tomorrow? Its INDEPENDNCE DAY here...have to celebrate our freedom from your ex-ex-ex-ex KING... :D

[gizmoguy303]

Yet the THREE website plugs were okay. Odd.

(and all in fun, relax) :)

He was referring to discussing the merits of the IB3800 on a public forum, and how posting a comparison review that puts GP and IB against each other would not be right since he deals with both companies. ;)

[Rtsbasic]

Tomorrows fine mate, enjoy your holiday. Email whenever convinent, not got any money for a couple of weeks yet :)

If your going to be in the area around Oct shoot me an email closer to the time and we'll see whats going on. Thanks for the offer :)

For power supply I currently use a good quality computer PSU, I'm sure its not the best but a very large amount of racers here in the UK use one when not at the track so can't be that bad. It spits out about 26 amps on the 12v rail, but I'm looking at a Pro Peak charger that a bit better looking than my hackup job, and does 13.8v/20 amps. Being on a budget I can't afford to spend £100 on a supply, so hoping the Pro Peak one will be enough. Its £35 locally.

To anyone interested in running a computer PSU as a power supply, off mine I can run my Millenium charger, a friends Varipulse one (charging 7 cell batts at approx 4 amps) and a soldering iron with no false peak or otherwise power issues. Just make sure its at least 400w, no 400w supply will put out less than 20 amps on the 12v rail. Server ones are known to put out 50-60 amps sometimes.

[ikraj]

Tomorrows fine mate, enjoy your holiday. Email whenever convinent, not got any money for a couple of weeks yet :)

If your going to be in the area around Oct shoot me an email closer to the time and we'll see whats going on. Thanks for the offer :)

For power supply I currently use a good quality computer PSU, I'm sure its not the best but a very large amount of racers here in the UK use one when not at the track so can't be that bad. It spits out about 26 amps on the 12v rail, but I'm looking at a Pro Peak charger that a bit better looking than my hackup job, and does 13.8v/20 amps. Being on a budget I can't afford to spend £100 on a supply, so hoping the Pro Peak one will be enough. Its £35 locally.

To anyone interested in running a computer PSU as a power supply, off mine I can run my Millenium charger, a friends Varipulse one (charging 7 cell batts at approx 4 amps) and a soldering iron with no false peak or otherwise power issues. Just make sure its at least 400w, no 400w supply will put out less than 20 amps on the 12v rail. Server ones are known to put out 50-60 amps sometimes.


There are some really neat server supplies (rack mounted servers) because they are very low profile and are designed for high temp enviroments. You also get 3.3V that you can use to break in motors, 5V to run a motor lsthe or other devices, and the 12v for your charger.
Do you know how to figure the loads based on wattage? Remember that you are suppling three voltages from the PSU. Each one has its own load requirements...ergo the max amps @ 12V for a 500W supply is around 30-32 Amps. That is actually much better than many supplies provide...
One recommendation, depending on the soldering iron that you are using (I assume a 12V iron) you might want to put a 15V 10,000 uf capacitor in parallel with your 12V output just to keep it clean from noise and a bit better transient regulation (only if you use an iron) At times some soldering irons generate AC back voltage and that can affect your overall performance. Now this is just a precaution...you do not have to do it.

ikraj

[Rtsbasic]

Thanks for the advice on the cap..I normally run my irons off 240v mains, but sometimes I do run my 12v one off the supply if its powered up. I have a 9400uF 15V cap spare I'll put in parallel with the output leads.

I don't know what you mean by load based on wattage? I know basically W = V * A, with resistance in there somewhere. I'm not an electrical engineer and don't pretend to be, I just look up what I need to know. Although recently I've been trying to learn more about electronics to more accurately compare RC electronics, and because its stuff I'll be studying in sept anyway.

I used to use the 3.3V rail for breaking in new brushes on my brushed motors, but since I mostly run brushless motors now it doesn't get used often. 10 mins on there and a stock motors nicely broken in :)

For PSU's I generally go by the ratings it says on the side, mine is made by Encer and is aimed at high power systems, like ones running dual PCI-E video cards, they draw serious power.