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#1
02-04-2009
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Trakpower 4900 udc 20
Hi, I have just tried to charge my 3 week old stick pack on my core udc20. All i get it it starts to charge for approx 5 secs then it comes up with batt vol err cell low vol. the pack has been run last thursday with no problems, and stored un connected to anything, with well over 7 volt in..... It wont charge... I have a core lipo 3250 and that has no trouble. Is the trakpower goosed? HAve spokent o the shop where I got the lipo and they told me to phone flighttech, phoned them and all I get is an answer phone...
 .. help.
__________________
 schumacher procat x Two, one bosscat, one rc10 gold pan, two optima mids, one cougar/club10 
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#2
02-04-2009
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Are you trying to balance charge it with no balance harness connected?
The Core lipo has the right balance lead for the charger but you need an adapter harness for the Trakpower 2mm plug.
__________________
 Nortech is ACE!
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#3
02-04-2009
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Yeah, using the harness too..
 .. like i said, it was all working fine last thursday....must have a dodgy lipo pack I think... I may be wrong..?
__________________
schumacher procat x Two, one bosscat, one rc10 gold pan, two optima mids, one cougar/club10
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#4
02-04-2009
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does it charge without using balance (balance lead removed from charger too?) whats the voltage on each cell? plus to balance and minus to balance?
trakpower/.flightpower/flighttech are very busy at the min suffering form staff off work
__________________
MBModels - Schumacher Racing - Vapextech.co.uk - MRT - Savox - SMD
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#5
02-04-2009
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trying to sort out multi meter to test individual voltages now....will update asap...
__________________
schumacher procat x Two, one bosscat, one rc10 gold pan, two optima mids, one cougar/club10
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#6
02-04-2009
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As far as I can tell I have everything set up correctly, I have set the meter to 20, under dcv, and the results showing 1404?? no dots in between to indicate voltage? dont know if the meter is any good?.. used the same settings on the other lipo i have and it shows 1567? stressed now..lol
__________________
schumacher procat x Two, one bosscat, one rc10 gold pan, two optima mids, one cougar/club10
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#7
02-04-2009
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Give Trakpower a ring, they are very helpful.
Most likely the battery is a tad lower than you thought and the charger/balancer is being a little over sensative. I'm sure Mac or any of the tech boys at TP will find you an easy fix. Or Mark C..... he's quite handy aswell 
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#8
02-04-2009
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Have you got a meter to measure the pack's voltage independantly of the charger? You can measure each cell via the balance port and see what they are each reading.
__________________
AKA: Andy Nancollis 1/10th drives: Yokomo BMax2MR & BMax4 1/16th drive: Carisma GTB Racing in South West: http://www.mendiprcraceway.co.uk/ Racing in Wales: www.caldicotrcracers.co.uk Kept running by: Yokomo via MB Models & www.tracksidespares.co.uk Shells by Square Crabs
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