Charging LiFe battery while in transmitter (4PM,3PM)
#1
Charging LiFe battery while in transmitter (4PM,3PV)
We have a couple futaba transmitters, specifically 3pv and 4pm. I aslo bought LiFe batteries for the transmitters. Can I leave the battery plugged into the transmitter and use the radio charger barrel plug and then just plug the balance connector into the balance board? Or, do I need to unplug it from the transmitter each time for charging?
Last edited by Silverbullet555; 01-11-2021 at 12:15 PM.
#2
R/C Tech Elite Member
iTrader: (9)
I am not sure if it's "approved" on with my 4PM I charge the battery using only the balance port. I use this adapter: https://www.amainhobbies.com/tq-wire...qw2650/p702030
I turn off the transmitter and charge the battery without unplugging it.
I turn off the transmitter and charge the battery without unplugging it.
#3
I am not sure if it's "approved" on with my 4PM I charge the battery using only the balance port. I use this adapter: https://www.amainhobbies.com/tq-wire...qw2650/p702030
I turn off the transmitter and charge the battery without unplugging it.
I turn off the transmitter and charge the battery without unplugging it.
#4
R/C Tech Elite Member
iTrader: (9)
Maybe that is what I was supposed to do. I plugged the connector that goes from the radio into the charger using an adapter and then the balance plug into the balance board and charged it that way. It's a 3 wire balance plug so it has complete connection to the two cells independently and the other plug is perhaps redundant. The wire is all the same size so there are no current concerns.
#6
Tech Champion
I'm sure it's not recommended somewhere, I know I'd hate to lose a nice transmitter to an odd charging mishap with a battery issue, as unlikely as it might be. But people do it all the time, including me, I think without much issue.
Barring a batt failure, the risk to the radio I think would only be if the charger pushed the battery voltage above what the radio could handle. But since lithium chargers are voltage controlled I wouldn't expect much issue. Back when using the nickel batteries the amp based charge voltage went much higher, still didn't seem to be an issue.
Barring a batt failure, the risk to the radio I think would only be if the charger pushed the battery voltage above what the radio could handle. But since lithium chargers are voltage controlled I wouldn't expect much issue. Back when using the nickel batteries the amp based charge voltage went much higher, still didn't seem to be an issue.
#9
I have an adapter that runs from my charger to charge a receiver pack. If I plug that into the LiFe battery and plug the balance plug into the balance board, it charges and balances. I see how that adapter is a little different and I perhaps misunderstood "charging through the balance plug" vs "charging through the balance board".