DX8 lipo - RC Groups
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Aug 12, 2013, 08:45 AM
Registered User
3flyguy3's Avatar
Question

DX8 lipo


What do you guys suggest using for lipo for a DX8?
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Aug 12, 2013, 10:27 AM
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skyhawkdc's Avatar
I have one of these in my DX8 ,, long time between charges,, the charger that comes with the radio will charge it.
http://www.hobbyking.com/hobbyking/s...ter_Pack_.html
Aug 12, 2013, 10:42 AM
Registered User
3flyguy3's Avatar
Was looking at the one. US warehouse is out of stock. Not sure if it's better to just wait or order from international.
Aug 12, 2013, 10:50 AM
Registered User
Pulse has one now too. Bit more then HobbyKing but in the USA and cheaper the Spektrum:
http://www.helidirect.com/plutx-4000...tx-p-30656.hdx
Aug 12, 2013, 11:48 AM
Registered User
I've been using the same pack as skyhawkdc for about 5 months -- like it a lot!
Aug 12, 2013, 05:27 PM
BrainFart RC-Pilot
TreeDiver's Avatar
Is it still possible to charge with the wall charger of Spektrum, delivered with the DX-8?
Or do you need to use a lipo charger?

The manual is not clear on this subject.
Aug 12, 2013, 06:35 PM
watch this
skyhawkdc's Avatar
I have one of these in my DX8 ,, long time between charges,, the charger that comes with the radio will charge it.
Aug 12, 2013, 10:28 PM
Registered User
In the radio you set it to Lipo and then you use the wall charger that came with the DX8. Changing the setting also adjusts the low voltage warning and % left gauge. Main difference with the lipo is the light on the tx actually turns off when it's done. On the nimh I seem to remember it just keeps charging forever.
Aug 12, 2013, 11:46 PM
Registered User
Was looking at the one. US warehouse is out of stock.
Aug 13, 2013, 03:11 AM
BrainFart RC-Pilot
TreeDiver's Avatar
Quote:
Originally Posted by grimbeaver
In the radio you set it to Lipo and then you use the wall charger that came with the DX8. Changing the setting also adjusts the low voltage warning and % left gauge. Main difference with the lipo is the light on the tx actually turns off when it's done. On the nimh I seem to remember it just keeps charging forever.
Thanks for the answer.
On the DX-8 the upper led (logo bars) are indeed on while charging. I did not notice it went off or changed colour when full with nimh. But I just have this DX-8 a few days, do my second charge now.
Aug 13, 2013, 09:59 PM
Registered User
Quote:
Originally Posted by TreeDiver
Thanks for the answer.
On the DX-8 the upper led (logo bars) are indeed on while charging. I did not notice it went off or changed colour when full with nimh. But I just have this DX-8 a few days, do my second charge now.
They dont go off when charging NiMH, the charger just keeps going. There is only a cutoff for the LiPo and it is in the pack rather than the TX.
Aug 14, 2013, 04:01 AM
BrainFart RC-Pilot
TreeDiver's Avatar
Quote:
Originally Posted by desertstalker
They dont go off when charging NiMH, the charger just keeps going. There is only a cutoff for the LiPo and it is in the pack rather than the TX.
Hi, yes indeed. I found out. It keeps on charging, which is no problem with NiMH if the charge rate is not too high. The wall charger is 0.5
amps. Depending on what is inside the Spektrum NiMH pack, 1C continues charge is no problem. I estimate that it gets 0.1amp per cell, so should be no problem .

I wonder what is inside the 4 NiMH Spectrum pack. I guess, no Sanyo enerloop.
Switching to LiPo, I am not sure yet if that makes sense.
First I have to find out how long the transmitter can be active using the regular Spektrum NiMH. I am not a glider flyer, so 1 day flying without charging should be possible?
Last edited by TreeDiver; Aug 14, 2013 at 04:14 AM.
Aug 14, 2013, 08:46 AM
Registered User
Can't seem to find any statement but I would assume the stock nimh would last at least 10 hrs. The other thing though is those Spektrum nimh packs don't have the best reliability record.
Aug 14, 2013, 09:52 AM
BrainFart RC-Pilot
TreeDiver's Avatar
Quote:
Originally Posted by grimbeaver
Can't seem to find any statement but I would assume the stock nimh would last at least 10 hrs. The other thing though is those Spektrum nimh packs don't have the best reliability record.
10hrs of active use... that is 'allot'
Well, let's see how it goes. I went from a heavy MC-19 with 3300 NiMH to the DX-8

I always can put enerloops inside of it if the base pack is disappointing.
If they have the older 2500 Sanyo inside of it... wise to replace very soon. Because they are 'crap' quality.

4000 LiPo is of course way cool, but charging it using the stock wall adapter...eek...
LiPo charge needs balancer connection to my opinion. If the build in 'overcharge' protection fails..........
Aug 14, 2013, 10:04 AM
Registered User
Quote:
Originally Posted by TreeDiver
4000 LiPo is of course way cool, but charging it using the stock wall adapter...eek...
LiPo charge needs balancer connection to my opinion. If the build in 'overcharge' protection fails..........
Very low C battery and very slow charge/discharge rate it won't become very unbalanced. I don't see how charging with a standard charger with a balance connector is any less dangerous then charging this inside the tx. Both have an equal potential to malfunction.

Hangtime Hobbies (aka No BS batteries) has an Eneloop DX8 pack for $29.


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