GME TX610---Recharging

Submitted: Sunday, Mar 23, 2003 at 18:46
ThreadID: 4004 Views:3084 Replies:4 FollowUps:3
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I have just bought a GME TX610 for back to vehicle comms.


Currently they don't supply a car battery charger, although it does have a connection port in the top (which doubles as the mic port)

My Question is, can I purchase a car recharger for it from Dick Smith. If so what is the required voltage and polarity to charge it? (It takes 4 x AAA NiMH at a total of 4.8V/700Ah).

I was recommended by Dick Smith a 6V recharger, but the polarity is the ??????

Any feedback would be appreciated?

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Reply By: Member - Bob L - Sunday, Mar 23, 2003 at 21:59

Sunday, Mar 23, 2003 at 21:59
Dolfn.
Will check with GME when dc charger will be available and what format it will take. ie desk charger with a 12volt plugpack would be ideal.
Should be able to find out tomorrow.
cheers
Bob.
AnswerID: 15942

Follow Up By: Member - Bob L - Monday, Mar 24, 2003 at 22:59

Monday, Mar 24, 2003 at 22:59
Dolfn
Gme advise their charger is due mid April and no details available as yet.
I use an Icom IC40jr which takes 3xAA and find alkaline batteries to be economical due to the casual use of this unit. Bear in mind alkaline batteries last twice as long as ni-cads.
Cheers Bob .
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FollowupID: 9794

Reply By: Member - Geoff - Sunday, Mar 23, 2003 at 22:10

Sunday, Mar 23, 2003 at 22:10
We have recently ordered a 12 volt charger which will charge AAA & AA batteries through "Battery Barn". This was for our GME TX610 UHF. We are able to pick it up early next week so if you need more information we can pass it on when we get it. Jen
AnswerID: 15944

Follow Up By: Member - Geoff - Monday, Mar 24, 2003 at 19:03

Monday, Mar 24, 2003 at 19:03
Picked up our recharging kit today from "Battery Barn in Bundaberg" it is a ..... Power Tech Plus Cat. MB-3535 12v Ultra Fast NI-MH & NI-CAD Battery Charger. Cost $46 Comes with a Car adaptor and charges in 2-3 hours. Geoff & Jen
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FollowupID: 9771

Reply By: GaryInOz - Sunday, Mar 23, 2003 at 22:11

Sunday, Mar 23, 2003 at 22:11
First of all I am not familiar with the physical construction of the radio, so these are general tecniques that I am describing to attempt to assist you.

If you can get a plug to fit, the way to determine the polarity would be to measure the voltage coming OUT if the plug, ie. if the multimeter shows that a terminal carries a "+4.8 v" then that is the terminal to put "+4.8v" in. Think of it like jump starting a car battery, you get the idea? Another thing you could try is to remove the battery pack and use a multimeter on OHMS to check the continuity between one or otherof the pads on the radio that connects to the battery, and any terminal on the connection port you can safely/easily get to, comparing the result with the markings + or - on the battery.

DO NOT use the Dick Smith 6v recharger as you have indicated the battery pack is only a 4.8v and you WILL damage it by overcharging.

If you are a bit handy with a soldering iron (or can find someone who is) it isn't a difficult project to build a small 4.8 volt recharger (would take less than a half an hour - one small IC and two or three other components, see back of Dick Smith/Jaycar catalogue for guidance). When you have proven that the recharger works just "pot" it in enough araldite to cover and insulate everything and it should give you years of service.

Hope this helps.

Have a chat to someone in "Trikies Dickies", they might do the job for you for a 6-pack......
AnswerID: 15945

Follow Up By: GaryInOz - Sunday, Mar 23, 2003 at 22:15

Sunday, Mar 23, 2003 at 22:15
Or of course buy a solar recharger and a second set of batteries from D.S.!!!
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FollowupID: 9731

Reply By: brett - Monday, Mar 24, 2003 at 23:31

Monday, Mar 24, 2003 at 23:31
The socket on the top is for an external mic not for recharging, where did you get the idea it was for charging??? The only way to recharge is with a desktop charger, the 610 has no socket to plug a charger in, it only has 2 contacts on it's base. I use 4 NiMh in mine and when it's time for a charge I take them out and put them in a battery holder and charge them off a power supply using a resisitor to limit current, very simple but effective. I have 700mAH batteries so charge them at 70mA for 15 hours. using a 13.8V supply it works out you need about 110 Ohms resistor rated at 1W to be safe. calculation is (13.8-6)/.07 =111 Ohms
power is .07 squared * 110 ohms = .55W
AnswerID: 16018

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