Hey folks - infrequent poster from New Zealand here but long time fan of Flite Test.
I have a Jumper T Pro transmitter which I am very happy with as a lightweight option for carrying up our local volcanic peaks for slope soaring or using with my ragtag collection of small FrSky and Spektrum compatible electric park flyers. I fly only occasionally and ave found that if I leave the batteries in the TX, they gradually go flat even though the TX is powered off. But, if I remove them from the transmitter, the batteries retain their charge.
It seems the TX is slowly consuming power even when switched off. Because the battery covers are so awkward to get on and off, I would like to be able to leave the batteries permanently in the device without worrying about them being fully discharged, as I do with my FrSky Taranis.
It is a slow drop in voltage - I measured it after a full charge and after 26 days it went from 8.0v to 6.1v. I initially gave myself a bit of a fright after not using it for some months and finding it at 2.67v! Fortunately the relatively new 18650 Li-Ion batteries seemed to recover after a couple of days of charging.
I can't find threads about others having the exact same issue, though I have stumbled on some comments about a problem from people who may have had one of the radios from the "original batch" where the power to the external module stays on even though the TX is turned off. I don't use an external module, but I'm wondering if this fault might be responsible for slow depletion of voltage I am seeing. I can't find the fix for this, if there is one.
I emailed Jumper-RC support but no reply - makes me wonder if they are going to remain in business, particularly as RadioMaster seems to be overtaking them.
I'm considering whether I could improvise a physical power switch to be able to disconnect the batteries without removing them from the unit.
Suggestions appreciated.
I have a Jumper T Pro transmitter which I am very happy with as a lightweight option for carrying up our local volcanic peaks for slope soaring or using with my ragtag collection of small FrSky and Spektrum compatible electric park flyers. I fly only occasionally and ave found that if I leave the batteries in the TX, they gradually go flat even though the TX is powered off. But, if I remove them from the transmitter, the batteries retain their charge.
It seems the TX is slowly consuming power even when switched off. Because the battery covers are so awkward to get on and off, I would like to be able to leave the batteries permanently in the device without worrying about them being fully discharged, as I do with my FrSky Taranis.
It is a slow drop in voltage - I measured it after a full charge and after 26 days it went from 8.0v to 6.1v. I initially gave myself a bit of a fright after not using it for some months and finding it at 2.67v! Fortunately the relatively new 18650 Li-Ion batteries seemed to recover after a couple of days of charging.
I can't find threads about others having the exact same issue, though I have stumbled on some comments about a problem from people who may have had one of the radios from the "original batch" where the power to the external module stays on even though the TX is turned off. I don't use an external module, but I'm wondering if this fault might be responsible for slow depletion of voltage I am seeing. I can't find the fix for this, if there is one.
I emailed Jumper-RC support but no reply - makes me wonder if they are going to remain in business, particularly as RadioMaster seems to be overtaking them.
I'm considering whether I could improvise a physical power switch to be able to disconnect the batteries without removing them from the unit.
Suggestions appreciated.