Turnigy 9x V2 $8 battery Modification

Helicopter-specific issues relating to the electronics in your bird

Turnigy 9x V2 $8 battery Modification

Postby pip333 » Thu Sep 02, 2010 10:27 pm

Hi, I would be grateful to hear if anybody has done the $8 battery modification to the Turnigy 9x V2. I know it works great on the v1, but I just want to know if anybody has successfully carried out the modification on the v2.

Posts: 3
Joined: Fri Aug 13, 2010 11:52 am

Re: Turnigy 9x V2 $8 battery Modification

Postby crampy » Sat Sep 04, 2010 2:11 pm

It'll work the same as for the V1.
Very good mod, I highly recommend it.
Posts: 40
Joined: Wed Jun 23, 2010 10:33 am

Re: Turnigy 9x V2 $8 battery Modification

Postby gladiax » Sun Nov 28, 2010 2:32 pm

Hi, with 3 cell lion battery and without modification on board, how can i decrease the voltage?
Posts: 1
Joined: Sun Nov 28, 2010 1:25 pm

Re: Turnigy 9x V2 $8 battery Modification

Postby mtesa » Mon Nov 29, 2010 3:14 pm

Did it.
Tried something else http://www.rcgroups.com/forums/showthread.php?t=1342269
Works too :)
Posts: 17
Joined: Tue Nov 23, 2010 2:47 pm

Re: Turnigy 9x V2 $8 battery Modification

Postby sytamra » Sun Dec 05, 2010 12:32 am

Why would a 800mah 11.1 from something like a Honey Bee not work..........charged to something less than 12.6V?
Posts: 12
Joined: Mon Nov 08, 2010 12:45 am

Re: Turnigy 9x V2 $8 battery Modification

Postby lm317 » Thu Dec 16, 2010 5:53 pm

Hello -

Did anyone have any probs with this mod??
The voltage regulator (78L05) on the TH9x has a dropout voltage of
1.7V (Datasheet) - using a 2s Lipo and discharging to the min (3V/cell)
would leave you with 4.3V on the uC instead of 5V.

So of course it might work - but depending on the crystal frequency the
uC needs more or less voltage to operate safely.
Maybe Bruce can answer this - are we relaying on the uC to work with
less voltage than the design engineers supposed it to work with?

If u have a 2.4Ghz Modul working with 5V (don´t know if there are any -
FrSky internally converts to 3.3V) you wont provide it with the desired voltage either -
since it will use voltage regulator too. Hopefully a low voltage drop regulator....
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Joined: Thu Sep 09, 2010 5:08 pm

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