FBURDEN wrote:Hi,
"Why 3 cells"? It's for a Futaba 6EX which needs 9.6 volts I believe. Currently has an 8 pack of Nicad AA's.
If the lithium is 3.7 then I need 3 of them.
I'd rather not change/add any resisters to the motherboard.
I'd be happy not to need to install balancing connectors. Is there a charger that you would recommend that only needs to be connected to the power leads. The HK accucell seems to need be connected to the balancer as well. (from reading the manual, I haven't bought one yet....)
Thanks!
You have 8 nicads, you have a charger, so I doubt you would be saving much money through the purchase of new batteries and new charger.
Your radio may work well on a lower voltage if converted to 2.4, just the transmitter portion of most
non 2.4 GHz radios need higher voltages because the transmitter designs were so old.
All of this also depends on the power dissipation capabilities of the voltage regulators inside the radio, but I think
most Futaba transmitters will work
fine at the increased voltage.
Fully charged:
1.25V x 8 = 10 Volts (NiCd)
4.2V x 3 = 12.6 Volts (LiIon or LiPo)
a 25% increase in battery voltage, for a five volt linear regulator that would be a 50% increase in voltage drop and power dissipation.