Using NiMH Rechargeable in Futaba 3GR-2.4GHz?

[Qwghlm]

Hi,

Rather than buying the expensive and low capacity NiCad recommended by Futaba I thought I'd try to use some NiMh ones instead and just use the charging jack.

Unfortunately my charger just shows "open" when I try to charge them via the socket on the radio.

Is there something else I should be doing, or is this not possible at all?

The batteries I have are the Duracell Accu Supreme at 2450mAh

Steve

[blue_pinky]

When the transmitter is on it disables the charging socket, so make sure it's turned off when your trying to charge it.

If your already doing that then make sure your lead is ok, and is polarised correctly.

The only other thing I can think of...I had the 3pm (wheel version of the 3gr) and had some weirdness with this to begin with...one thing being that the hole in the case stopped the plug on the lead I had from making a connection properly. The hole was smaller than the body of the plug itself, and the socket was mounted quite far into the outer case. It felt like it was mating fully but was actually being held out of the socket just enough to stop it connecting properly. So I fettled the plug and the hole a little to make sure it was going all the way in and connecting properly.

I'm not sure what the socket/case is like on a 3gr, but could be worth a look?

[teamxray]

you need a long reach charge plug not a short one

[Qwghlm]

Originally Posted by teamxray

you need a long reach charge plug not a short one

Isn't that always the way

Any idea where I can get one?

Steve

[teamxray]

maplins of course

[Qwghlm]

Originally Posted by teamxray

maplins of course

Looked at Maplins on-line but couldn't seem to find a long reach one, so I've now ordered one from eBay for £1.29 delivered.

Thanks for the help.

Steve

[teamxray]

i see if i have one in the shop today and check that one for you to see if it your charger or the radio charging socket that works or not

[Qwghlm]

Originally Posted by teamxray

i see if i have one in the shop today and check that one for you to see if it your charger or the radio charging socket that works or not

Well, thank you very much.....

Steve

[teamxray]

right i have checked the one i have here the plug is a 2.5 internal size and i have tried to charge it on 7 different chargers and they all charge it with no problems here so i guess it either your charger does not like it or you got a bad connection inside the tx or try swopping the black and red wires around the postive is the inner part of the plug if thats any help see if that works

will not make any difference quick or slow the quick charger will or should be set at 1 amp and no more to charge the tx

[Qwghlm]

Originally Posted by teamxray

right i have checked the one i have here the plug is a 2.5 internal size and i have tried to charge it on 7 different chargers and they all charge it with no problems here so i guess it either your charger does not like it or you got a bad connection inside the tx or try swopping the black and red wires around the postive is the inner part of the plug if thats any help see if that works

Thanks for that, it must be the Tx as I've tried two different chargers, both of which work fine with my Futaba TC9 Super.

Oh well.

Steve

[bodgit]

Have you tried a continuity meter between the charger socket and the plug which the batteries plug into. Maybe a wire broke.

[Qwghlm]

Originally Posted by teamxray

<snip>

will not make any difference quick or slow the quick charger will or should be set at 1 amp and no more to charge the tx

I've always charged my TC9 at 1/10, or 2.4 amps, so I should really only charge at 1 amp, probably due to the very small cross section of the internal wiring?

Steve

[Qwghlm]

Just goes to show how confused I can get!

Just tried the charger again and got an open circuit.

Now I've found out that it's nothing to do with the radio, but the intermediate plug between the charger and the Tx, all it needed was not to be fully plugged in, and I mean by fully that means it almost needs to be held together.

No idea why, as I have just checked the plug and it's all OK, but I changed it anyway, and the new one works fine.

So the wire has come out of the radio, and it still works.

Thanks for all your help, and at least I found out the problem, even though I still do not know what is wrong with the plug...

Steve