Colin Martin Posted June 6, 2019 Share Posted June 6, 2019 I have been using the supplied NiMh battery in my T8FG Tx from new without problems but I want to upgrade to LiPo to extend the intervals between recharging. I know I need a 2S, low discharge rate and with a Futaba plug. The existing NiMh battery measures 134mmx34mmx17mm. I have spent hours searching t'internet without success. Please can someone help me out with a recommendation? Quote Link to comment Share on other sites More sharing options...
David Begg 1 Posted June 6, 2019 Share Posted June 6, 2019 I have successfully used a LiFe battery in my T8FG. However it MUST be removed from the TX for charging. I purchased the battery from HobbyKing, Zippy 2500 6.6 volt %c Rx series On a bar code is 2200008691158 Hope this assists you. Quote Link to comment Share on other sites More sharing options...
Chili Pants Posted June 6, 2019 Share Posted June 6, 2019 Posted by David Begg 1 on 06/06/2019 20:26:56: I have successfully used a LiFe battery in my T8FG. However it MUST be removed from the TX for charging. I purchased the battery from HobbyKing, Zippy 2500 6.6 volt %c Rx series On a bar code is 2200008691158 Hope this assists you. David, please excuse my ignorance but why must the battery be removed from the transmitter? is it because the circuitry within the transmitter would not be able to handle a Life charger with a suitable adapter and its ability to deliver a higher Amp charge rate? Sorry for the hijack Collin, I also use LiFepo4 in my Futaba 9c and 7c. I also remove the batteries for charging but I am slightly concerned about causing undue wear on the connectors. Quote Link to comment Share on other sites More sharing options...
Colin Martin Posted June 7, 2019 Author Share Posted June 7, 2019 Thank you for your recommendation David but HK are not showing that battery. I note that a 2S LiFe has a nominal voltage of 6.6v. I don't know whether there is more than one version of the T8FG but I fear that 6.6v will be insufficient. My NiMh reads 8.2v when fully charged and the low battery alarm operates at 6.8v. Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted June 7, 2019 Share Posted June 7, 2019 I'm sure the transmitter will operate on much lower voltage than 6.6v: It's alarm is configurable for NiMh, LiPo, and LiFe, and the alarm voltage is determined by what's bad for the pack that's in use. Quote Link to comment Share on other sites More sharing options...
David Begg 1 Posted June 7, 2019 Share Posted June 7, 2019 From memory Allan is correct, you need to configure the Tx for the type of battery you are using. I removed the battery for charging as I believed that LiFe requires a specific charging regime, with my charging of the battery done via an external charger set specifically for LiFe type batteries. The LiFe batteries last for a long time in my Tx, I have never found external charging to be a problem, although I do take a second battery with me as a spare. (Never had to use it). However, I am no expert and others more knowledgable may correct my procedures and assumptions Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.