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Duralite Duralite Battery Li-Ion Li-Mn Chargers Support Forum


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Old 06-29-2004, 07:06 PM   #1
Dan Lewis
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Default trying out duralite

I bought two 4000mah flats and the required equip through www.onlyraptors.com the other day - great deal and very easy order. Clark also sent me a lith-ion for my 9Z along with spending quite a bit of time with my pestering questions - being such a noob I just had to ask everything. They've got one hell of a shop there if you ask me.

I'm looking forward to less worries and more flying with this new setup. Any gotchas that I should know about before I install them? Keep in mind, I've only been in this a short time and have used only nicad/nimh w/supernova. Electronics is not my forte.
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Old 06-29-2004, 07:23 PM   #2
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Clark is definitely a stand-up guy!!

You will LOVE the Duralites, I sure do!!
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Old 06-29-2004, 09:16 PM   #3
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I've started with the TX and support gear and am Anxiously awaiting the funds to buy the Rx gear for both my copters. You can fly forever with these things and the constant voltage
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Old 06-29-2004, 09:17 PM   #4
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Duralites are
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Old 06-30-2004, 05:50 AM   #5
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Your Right BDIS. I just bought a new 9CHP and installed a Duralite TX pack first thing. The TX Duralite has been charged two times and I have over 6.75 hours on the TX already after last weekends flying and setup clinic. Best thing of all, it is still showing 11.3 volts, I just turned it on and looked. Now that is incredible!!

Thanks Duralite!!
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Old 06-30-2004, 07:33 AM   #6
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Does the constant voltage mean that when it runs out of juice, it runs out super quick?
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Old 06-30-2004, 08:31 AM   #7
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NO, It will eventually get down to the "no fly" voltage and then it is time to recharge. It is best to just recharge after a good flying session anyway though and just know that if you need to go for a long time without charging you can do so. The batteries will not develop memory so it is safe to just put them back on the charger after each session.

:glasses:
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Old 06-30-2004, 10:09 AM   #8
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Probably a dumb question: What is 'no fly' voltage? Does that depend on the battery or the regulator?
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Old 06-30-2004, 11:03 AM   #9
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The receiver packs are 7.4 Volt packs. The "no fly" voltage is 6.9 volts on the pack while applying a 1 AMP load. The regulator has nothing to do with this voltage as the battery is read independent of the regulator. Do not check the voltage output from the regulator as the voltage will be 5.1, 5.6 or 6 volts dependent of the regulator used. This voltage will be the same throughout the discharge of the pack and will only drop off well after possible pack damage, so the voltage cannot be read from the regulator.

I personally have picked a value of 7.1 volts to stop flying using a 1 AMP load. This is not necessary, but charging the batteries is no problem and by that time you have flown MANY flights! :wink: The best way is just to fly all day and check the pack in between flights. If you do get near the "no fly" voltage, stop and recharge or check for a possible problem if you have not flown much (doubtful). Charge between flying sessions even if the pack has not been used much as the battery has no memory effects.

Later,
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Old 06-30-2004, 11:34 AM   #10
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Thanks! Great explanation I appreciate the help
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Old 07-01-2004, 09:17 AM   #11
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Do the TX packs charge thru the TX port or do the have a separate connector for charging like the RX pack?? I have JR if that makes a difference.
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Old 07-01-2004, 12:14 PM   #12
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They charge throught the charge port in your TX. You can call Duralite and ask for the ClintStone Tx Charge lead. They make you a lead that you plug into the Tx port on ur charger and then plug staight into the battery just in case you want to charge the Tx batt when it's not in the radio.
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Old 07-02-2004, 04:10 AM   #13
Dan Lewis
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12.3v on my new 1300mah tx... can this be bad:?: I've never seen it that high with the futaba batt.
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Old 07-02-2004, 04:34 AM   #14
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That is normal. I have seen as high as 12.5. I LOVE my duralites.
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Old 07-02-2004, 09:39 AM   #15
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Dan,
Normal fully charged voltage for the receiver packs will be 8.2 to 8.4.
Fully charged voltage for the transmitter packs will be 12 to 12.5.

Stop fly on the transmitter pack is 10.9 volts showing on the volt meter of the transmitter.

Stop fly on the receiver packs is 6.9 volts with a 1 amp load applied. I have flown the receiver packs down to 6.5 volts with no problems. The instructions are stating a higher voltage to allow a good safe zone margin.

David
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Old 07-02-2004, 10:19 AM   #16
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I have also seen them as high as 12.6 on my 9x pack. But it doesnt seem to harm the transmitter in the least.
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Old 07-03-2004, 08:17 AM   #17
Dan Lewis
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Thanks everyone for the help and advice

I'm hoping to have something to fly later today... time to build, build, build
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Old 07-04-2004, 06:32 PM   #18
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Those regulators get hot!
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Old 07-04-2004, 11:30 PM   #19
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Yes the regulators get warm, that is why there is a heat sink attached to them. Mount the regulator where air can flow freely around it and thru it. Do not wrap it in foam or mount it where it is covered.

David
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Old 07-05-2004, 08:14 AM   #20
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I had put it on a double sided sticky pad in front of everything, right over the battery. That should be good, right? Thanks again David :glasses:
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