Originally Posted by
Roelof
Why switching to LiFe or LiPo ?
If it is because they hold the charge much better then I would advise to get soem Sanyo Eneloop batteries.
Only problem with rechargeable NiMH's is their nominal voltage is 1.2V.
5.0V for your Tx is pretty low to start with.
The NiZN batteries I linked to measure 1.6V each and I regularly start off with 7.0V+ on my DX4R after a re-charge.