I'm using a hobbico field charger on my 4.8 v RX pack.
Its about 30 degrees out so I will use a loaded multi tester at the field today to monitor the rx battery after each flight.
I see in another post that 4.8v is good, 4.5 - 4.8 is questionable and 4.4 is a no go...are these safe numbers to go by?

Also when charging. how high should the voltage go? Right now, the 4 cell pack is on the charger with the multi tester in the monitor ports of the charger and its reading 6.0 v (with no load) I'm not sure I trust the charger to shut off? I'v fried a battery before so I'm wondering how high to let it charge to before I shut it down??/

Today I'll get an Idea of how cold is TOO cold for flying!!
( my comfort not the planes)

Steve