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HelicopterRadio - Servo - Gyro - Gov - Batt › JR PCM9xII Charging
11-23-2006 12:48 PM  11 years agoPost 1
HellRaiser

rrApprentice

Bristol, UK

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Have got myself a new radio, JR PCM9xII synth, no problems with the radio just charging the TX, the std mains charger only puts out 70ma, so its gonna take an age to charge each time, does anyone know how to charge via the Pro-Peak Prodigy charger/discharger, I have made up a lead but the charger will not sense the battery, I know you can overcome this by cutting out the input diode but as its a new radio, I don't want to start hacking it about, any ideas anyone.

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11-23-2006 01:20 PM  11 years agoPost 2
PaulJC

rrElite Veteran

Hertfordshire UK

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Mine senses the battery fine through the charger jack

JR radios are wired opposite to futaba though

Re-entering the atmosphere...

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11-23-2006 09:41 PM  11 years agoPost 3
wuzofoz

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Brisbane,Queensland- Australia

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mine was the same as HellRaiser.
had to mod the radio to use charge jack.
you could remove the battery to use your Pro-Peak Prodigy charger/discharger.

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11-23-2006 11:15 PM  11 years agoPost 4
PaulJC

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Hertfordshire UK

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How strange, mayby mac man will be able to clear up if there has been any board revisions over the past year, mine is a UK model which i got when the first came out last year.

I can charge, but cannot discharge through the charging socket, this is with a pro peak prodigy 2 set in Ni-Mh mode, i can charge at any rate but anything over .5C tends to get a little warm.

Re-entering the atmosphere...

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11-24-2006 09:04 AM  11 years agoPost 5
HellRaiser

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Bristol, UK

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Thanks for the response guys, it would seem that the diode prevents the charger sensing the battery, hence then the pro peak will not charge, I don't really want to keep taking the battery out of the radio as the connector does not look very robust, looks like I will have to mod the battery lead as I did with my previous radio, solder a y-lead into the battery lead.
As you can guess I had similiar problems with my last radio (Futaba)
However looks like there is no panic at the moment as it will be blowing a hooligan & pi*****g down all weekend.........

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11-24-2006 09:19 AM  11 years agoPost 6
9387ASH

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UK

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Its a doddle to allow the discharge through the charge jack.

Open the back of the 9XII, look at the PCB in the rear case, look to the lower right of the Antenna mount and you will see a small section on the PCB marked JPC1 (its surrounded by a small white printed box). All you need to do is solder a jumper across those 2 points and Robert is your fathers brother !

Graphic located here...

http://www.macgregor.co.uk/faq/Tran..._Board_JPC1.jpg

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12-03-2006 10:38 AM  11 years agoPost 7
Top End

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Darwin

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9X11
charging I take the batt. out every time when it beeps. at the feild recharge fast go again.
In nearly 7 years I have had one batt. run dry dead.
and NO BLACK WIRE. by fast charging. I don't use wall chargers
My 3810 battery is still good for 400mh 8 years old.

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12-03-2006 11:15 AM  11 years agoPost 8
PietervA

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New Zealand

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Mac-man, so you're linking the 2 copper tracks within the white box? I'm assuming the diode is on the other side of the PCB.
R

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HelicopterRadio - Servo - Gyro - Gov - Batt › JR PCM9xII Charging
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