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Old Jan 14, 2009, 12:03 PM
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We should have the 720i's next week.

Jason
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Old Jan 14, 2009, 01:34 PM
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Just a reminder, this is an old thread and there is a new one started by NipponDave that is a continuation of this thread. You can find it here
Old Jan 14, 2009, 08:14 PM
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Yes it is an old thread but the new thread that you mentioned is for the Duo 2.
Old Jan 14, 2009, 08:17 PM
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HYPERION EOS NET, DUO, and DUO2 Chargers


https://www.rcgroups.com/forums/show...7#post11034534
Old Jan 14, 2009, 08:20 PM
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I stand corrected Sir Charles.
Old Jan 22, 2009, 09:23 AM
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Raydee thanks for stsrting this great Thread , for updating the first post and for mentioning just how great this chargers handles Ni chemistry. My self and my son have Nicad cordless power tools packs which were going down hill fast. My son even had one which was unuseable when he acurided it 04-15-07 ( part of a used set he purchased). I have been using my DUO and new 720i Net to cycle these old batteries and they have made a remarkable come back. Non of my other chargers do nearly as well . They may not last but then again I have some 30 year old Ni cells which are still doing OK.

A few example.
My son's 18 V Roybi flashlight would only work for a few minutes after using the Roybi charger.He has two chargers and result the sme with both. Three cycles on the 720i and now the light stays full briteness for an hour and battery still had 300 mAh in it whenndischarged down to 0.08 per cell at 2 amps.

One of my 14.4 V Roybi packs would not charge on OEM charger at all. First cycle on 720i 100 mAh in and 80 out,second cycle 500 in and 320 out, third cycle 905 out.


Perhaps I should start a sideline business repairing (?) cordless power tool packs.


How does that line go , send me your tired ,weak and weary?
Charles
Last edited by everydayflyer; Jan 22, 2009 at 09:33 AM.
Old Jan 22, 2009, 09:34 AM
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Quote:
Originally Posted by everydayflyer
I have been using my DUO and new 720i Net to cycle these old batteries and they have made a remarkable come back. None of my other chargers do nearly as well . They may not last but then again I have some 30 year old Ni cells which are still doing OK.

One of my 14.4 V Roybi packs would not charge on OEM charger at all. First cycle on 720i 100 mAh in and 80 out,second cycle 500 in and 320 out, third cycle now at 700 mAh out and still at 14.5 volts (work in progress)..
Charles,

Do you have a description anywhere on how you do this? I have some old Dewalt Ni packs that either won't charge or only last a few seconds in the drills. I don't have the 720i, but I do have two 620i's.

Thanks,

Boib
Old Jan 22, 2009, 10:06 AM
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I am using default 5 Mv peak,0.8V per cell cut off , Normal 4A charge , 2Amp. discharge with 5 min. dwell between charge and discharge.

Contacts to the pack is crude but works. 12 ga. super flex with heavy tinned ends, rubber band around contact area as tight as I can get it and leads inserted under it.

I need to come up with an plastic clamp with contacts and leads but the make shift setup is working fine for now.

I also need to take a pack or two that has been cycled and run some serious higher amp. discharges to simulated drill motor ,cut of saw etc. useage. I figure at the very least these packs will sever well with the flash lights as they have a low amp. requirement.

Charles
Last edited by everydayflyer; Jan 22, 2009 at 02:48 PM.
Old Jan 22, 2009, 02:09 PM
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Six cycle on my 14.4V Roybi and dsch capac. at 2A to 9.6V 1039 mAh.

Ran a 10A diischarge on my CBA II / CamLight Systems CC-400s setup and it delivered 951 mAh. Not bad for a battery that this morning was useless.


Charles
Old Jan 24, 2009, 07:43 PM
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Very nice I got some 18v ryobi batteries to try on mine. You got any pictures of how you are charging these? Also is there a way to charge 8aa batteries at a time with this thing for my transmitter?

Thanks,
John


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