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minittrackmann
2007.12.24, 08:25 PM
how does everyone break in brand new intellects on the lacrosse charger?

Cody

yasuji
2007.12.24, 09:01 PM
how does everyone break in brand new intellects on the lacrosse charger?

Cody
i install batts set to 1000ma then set to discharge then it switches to charge watching the time i only charge each cell to 500 ma...20-25 min let sit and cool for 20 min then charge @1000ma till full

minittrackmann
2007.12.25, 07:22 PM
Would any body else like to share their break in methods? Yasuji doing your method have you seen signifigant increase in anything rather then just breaking them in conventionally by running them and charging them a couple of times?

Cody

shuter
2007.12.25, 08:29 PM
minittrackmann - This is from a thread started by spoon - Mini-ZRacer.com Forums > General Discussion > Batteries, Chargers and Dischargers
Another Post on Batteries: Clearing up some confusion???

There is a gret deal of useful information in the thread.

Trickle charging with a C rate of .1 to .3 (most inexpensive battery chargers fall into this catagory) should be avoided to charge a depleted NiMH battery for a number of reasons. The low rate of charge does not produce enough voltage or heat variation for the battery charger to reliably recognize and it may continue to apply the charge. Overcharge can result. Overcharge when trickle charging can occur even if the battery is cool or only slightly warm to the touch. If you are using an inexpensive charger that fully charges your batteries and then goes to trickle mode it is recommended that the batteries be removed rather than allow them to remain in the charger overnight. NiMH batteries do not tolerate overcharging well and the continued trickle charge will actually cause crystalline formation inside our batteries. (rock) The crystal formation displaces a functioning portion of the battery reducing cpacity.

As with most things there is an exception.... New unused batteries. They may well have been produced months before you open the package. Having been sitting around for months they may have developed dry spots where the electrolytes have drained to the bottom. (Gravity) The most effective method to rejuvinate them and maximise their potential is to trickle charge them. First fully discharge the batteries then trickle charge them for 24 hours at a .05 C rate. They should then be fully discharged and recharged at a rate of .5C to 1C a few times. This should make your batteries very happy and maximize their capacity.

We all know that none of this has to be done. Most of us have probably just charged our new batteries and gone racing. The purpose of my gathering, distilling and posting this information is an attempt to dispel some of the battery myth floating around so those that are interested in getting that last little bit from their batteries can do so.

Cycles per day - There is no limit to the number of times per day our NiMH batteries can be cycled as long as proper battery protocol is observed. Charge at a rate of .5C to 1C. Allow batteries to rest/stabilize a few minutes after discharging and after charging.

Deep discharging - NiMH batteries have very little cyclic "memory". Current NiMH battery construction has practically eliminated "cyclic memory" thereby reducing the need to deep discharge on a frequent basis. In addition, our NiMH batteries do not recognize or count a usage or depletion of less than 70% as a cycle. If our batteries are getting regular use (at least once every two weeks) there is no need or advantage to deep discharge more frequently than once every three months. Deep discharging, while necessary to form/condition new batteries and batteries that have been sitting for a few weeks, is hard on the battery and reduces battery life a little each time.

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Last edited by shuter : 2007.02.21 at 01:39 AM.

minittrackmann
2007.12.26, 10:17 AM
Anyone else? I also have another question. When i throw the batts into the lacrosse charger is there a cutoff when you are discharging? Or does it go directly to charging once it is fully discharged.....

Cody

shuter
2007.12.26, 12:17 PM
The Lacrosse BC-900 will automatically begin recharging after discharge is complete. Take a look at the following thread "Lacrosse BC-900 Alpha Power Battery Charger" for more BC-900 information.

minittrackmann
2007.12.31, 12:27 AM
Thanks man.

Cody