spektrum dx3(or dx2/dx2.0/dx3.0) question?! - RCCanada - Canada Radio Controlled Hobby Forum
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Old 03-27-2008, 01:16 AM   #1
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spektrum dx3(or dx2/dx2.0/dx3.0) question?!

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just got a spektrum dx3.. i have some nimh batteries but i have to charge them at 2 at a time using my wall charger.. but there is a charging jack in the radio.. can i use this to charge my batteries as long as the ac adapter has reversed polarities like it says in the manual? but they say to use jr chargers? but when i was charging my rx pack from my revo i noticed on the ac adapter that it too is reversed like the radio, and it fits perfectly.. so my question is.. is it safe to use this as a charger? has anyone ever done this?
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Old 03-27-2008, 10:02 AM   #2
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it should be ok BUT I would look into a JR charger you dont want to mess it up over the wrong voltage going in.
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Old 03-27-2008, 10:49 AM   #3
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Any "wall wart" meant for charging 8-cell transmitter packs will work PROVIDED the polarity is correct (+ve on the outside of the barrel) and as long as the plug fits the Specktrum charging jack.

For example if you had an old Futaba or Hitec wall charger around all you would have to do is get the right plug (about $2 at Sayal) and wire it up correctly.

For some reason Spektrum and JR took the unusual path of putting the +ve connection on the outside of the barrel. Conventional wisdom says the +ve should be on the inside of the barrel where it is less easily shorted out to ground.

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