Humppack only lasts about 5 seconds (and this is the second I've tried!)

[Engstrom0304]

Hi guys,
I bought a 1000 - 2000mAh 6v humppack which comes with a charger. I found that after charging for a long time and the servos worked only for 5 secodns or so then they moved intermittently and then stopped.

I have plugged the battery into one side of the switch (which has two cables from it) and then the other side of the switch i have plugged into the reciever, leaving one cable from the switch unplugged. This seemed to work, when the switch is on one side the receiver has a light on, and on the other side the receiver is off.

This has happened with 2 humppacks now... I have charged by plugging the other cable that comes from the humppack into the charger directly. What might I have been doing wrong?

 

[zrock]

With the wall charger it is 6 - 10 hour charge

 

[Greywolf74]

Do you have a multimeter to make sure the batteries are charged? Maybe they arent getting charged.

Id also try rebind the RX to the TX.

 

[Engstrom0304]

Ignore

---------- Post added at 11:54 AM ---------- Previous post was at 11:48 AM ----------

Do you have a multimeter to make sure the batteries are charged? Maybe they arent getting charged.

Id also try rebind the RX to the TX.

I have no multimeter but when I plug it in the light comes on... Plus charging it does give it power for a few seconds. The battery was fine at first.

 

[Greywolf74]

Id try rebind the TX and RX....if that doesn't help Id look into ways of testing the batteries to make sure they are getting charged and Id look into finding a way to test the RX and make sure its working properly.

 

[babi_hrse]

Whats the voltage of the chargers output and the batterys voltage?

 

[hotrodrob]

How many times has the pack been charged?

transmited from a mobile communications device

 

[Engstrom0304]

Battery is 6v and charger is 7v at 80mA. Charged once or twice over night. Then in the morning it worked just for a few seconds... Should I have charged it for a certain amount of time before first use? I didn't use it much before first charge. Could it be that the charger is faulty and the first battery was not actually at fault?

---------- Post added at 1:56 PM ---------- Previous post was at 1:53 PM ----------

Also... I have noticed when this has happened that the steering servo will move slightly even if I don't touch the steering

 

[Macguyver]

Also... I have noticed when this has happened that the steering servo will move slightly even if I don't touch the steering

have you tried changing that servo ...i once had a bad servo that would make my failsafe kick in.. telling me i had a low battery...turns out it was the throttle servo that was causing all the problems ..and the battery was fine

 

[Engstrom0304]

I've tried re-binding but that hasn't fixed the problem... I can hear very faint repetitive noises as if the servos are trying to move which suggests it is the battery.. If I could get hold of a multimeter I could check the output of the battery.

 

[Greywolf74]

unplug that servo and try a different servo if you have one.

 

[Rolex]

If a drained battery just sits for a little while it will respond with a little bit of power. That seems to be what accounts for a few seconds of life.
A possibility is a bad switch. Plug the charger directly into the hump pack, bypassing the switch harness and see if it takes a charge that way.
If not, I'd guess the charger itself is bad or you wouldn't have the same problem with both packs.