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HomeAircraftHelicopterMain Discussion › superbrain 969 lipo update. Is it safe now for Charging
02-09-2006 06:35 AM  12 years agoPost 1
nguyen23464

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Suwanee, GA

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Ok, I just started getting lipos. I have a fromenco 4700 with regulator.

I have a superbrain 969 that has been updated with the lipo circuitry. Can I just charge this baby at 4amp? And let it run safely until the charger beeps like my nicads?

How safe is the new update on the 969. Has the issue been totally been fixed. I wanna feel assured that it is safe.

experiences anyone?


thanks,

Jamie

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02-09-2006 06:45 AM  12 years agoPost 2
rroback

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Irvine (UCI), Ca

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I wouldn't trust it. I've heard a few reports of it still having some issues. get a good charger, and you'll never need another. I'd recommedning something along the lines of an orbit pocketloader, for a nice and small, good quality unit, for you glow guys. very accurate for lipos, and excellent for your rx and tx packs, and for some smaller planes.

Rhett..... I can't fly, but the Profi sure can.

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02-09-2006 07:32 AM  12 years agoPost 3
nguyen23464

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Suwanee, GA

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how do you guys charge your lipos. In a fireproof box? If so whats the best.

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02-09-2006 09:27 AM  12 years agoPost 4
Yug

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UK. Herts

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I've got one of those steel wall mount security boxes. It usually lives on the floor. It has a small hole drilled in it to get the wires through to the battery.

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02-09-2006 11:12 AM  12 years agoPost 5
heliboy1023

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Tinton Falls, NJ

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superbrain 969 lipo update. Is it safe now for Charging

Ok, I just started getting lipos. I have a fromenco 4700 with regulator.

I have a superbrain 969 that has been updated with the lipo circuitry. Can I just charge this baby at 4amp? And let it run safely until the charger beeps like my nicads?

How safe is the new update on the 969. Has the issue been totally been fixed. I wanna feel assured that it is safe.

experiences anyone?


thanks,

Jamie
I wouldn't trust it either since the charger wasn't built for lipo's. I would just buy a different charger, one that was built for lipo's. I would suggest an accucycle-elite, but I don't know how many cells that lipo, and the accucycle can only handle a 3s pack.

You know you have to many heli's only when your wallet is empty.

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02-09-2006 11:27 AM  12 years agoPost 6
BlakeMcBrayer

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Georgetown, Ky

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NO, it is not safe, with or without the lipo update.
I have a fromenco 4700 with regulator
Fromeco and Duralites are not lipos

They are L-ion. Which require a charger for L-ion and NOT LIPO.

.

Don't come off the throttle untill you see your GOD!

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02-09-2006 02:52 PM  12 years agoPost 7
Dr. Fibinotchi

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Sioux Falls SD

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call fremco...
The guys is really nice and will give you the scoop. Last I spoke with him all fremcos where charging only 1.1A give or take a litle.
If this has changed someone chime in. Yes this is a lithuim Ion.
-Cody

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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02-09-2006 04:03 PM  12 years agoPost 8
nguyen23464

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Suwanee, GA

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ic ic

I heard that some people starting using claypots as a spot for charing there lipos or li-ion.

Whats the difference between a li-po and li-on?

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02-09-2006 04:23 PM  12 years agoPost 9
nguyen23464

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Suwanee, GA

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I just got off the phone with MRC and they assured me that everything would be fine after the update, because they added a specific lithium charge circuitry. And all the problems have been fixed from the old version.


I am still weary about this but I will never know unless I try it out.


Im thinking about, buying a crappy lithium ion battery at radio shack or so and letting it be the test subject. Maby run it and discharge and 3 or 4 times or so in a big clay pot.


what do you think guys?


Jamie

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02-09-2006 06:41 PM  12 years agoPost 10
BlakeMcBrayer

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Georgetown, Ky

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I may be wrong, but I thought that there was a difference in the charging technique between a lithium polymer battery and a lithium ion.

I have a charger that will charge lithium ions, but not lithium polymers.

Maybe someone can post in that knows for sure. Did MRC state it would work on l-ions?

Also, calling Fromeco is a GREAT idea, they are so willing to answer your questions. GREAT customer support is to be had at fromeco!!!

.

Don't come off the throttle untill you see your GOD!

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02-09-2006 08:19 PM  12 years agoPost 11
nguyen23464

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Suwanee, GA

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According to their manual:
B. CHARGING LITHIUM ION/POLYMER BATTERIES Never leave batteries
unattended when charging. Monitor the temperature of the battery
occasionally during the charge cycle. If batteries become hot or
voltage exceeds 4.20 volts per cell, disconnect immediately.
Because of the volatile nature of Lithium batteries, great care must
be taken when charging these cells. If improperly or overcharged,
there is the risk that the battery will explode or catch fire. Please
follow instructions and/or recommendations from the battery
manufacturer when selecting proper charge rate.
You can only use a “capacity” charge on Lithium batteries.
1. We recommend that you use a charge rate of no higher than 1C. For
example, for a 1600mAH battery, the charge current should be no
greater than 1.6 amps.
2. Do not enter cell and peak threshold settings, as these settings
become irrelevant when charging Lithium batteries.
3. We recommend that you always start with a fully discharged battery
pack (no load voltage between 2.7 and 3.0 volts per cell) by following
section D, and then “capacity” charge as stated in Step 8 of the general
instructions. You must enter a capacity that is 90% of the rated capacity
of the battery. When the charge cycle is complete, allow the battery to
go through the trickle cycle, as this will fill it to its full capacity.
4. If you do not begin with a fully discharged battery, then you will have to
estimate the amount of capacity needed to reach 90%, and enter this as
the capacity you want to charge to. Because your estimation could be
wrong, you should always enter a capacity less than you estimated for
safety. You should also monitor the battery’s voltage at all times and do
not allow it to exceed 4.20 volts per cell, or damage to the battery may
occur. If you are not certain of how full your battery is, you can
discharge your battery with this charger. When charging a Lithium
battery, never leave the battery unattended. Never allow the battery
voltage to exceed 4.20 volts per cell.

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02-10-2006 01:10 AM  12 years agoPost 12
BlakeMcBrayer

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Georgetown, Ky

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Cool, it sounds like it will work just fine.

I didn't mean to badger you about it, I had rather ask twice and make sure due to the volatile nature of lithium batteries. It's much better to be safe than sorry with these battries, as there usually isn't a second chance to get it right.

.

Don't come off the throttle untill you see your GOD!

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02-10-2006 02:13 AM  12 years agoPost 13
nguyen23464

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Suwanee, GA

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no problem,

your exactly right.

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