Imax b6 not charging 4 cell

[neil-liverpool]

I have been using my imax b6 with 5a power pack for charging 1 cell and 3 cell (3000mah) batteries without any problems,
tonight I tried to charge some new 4 cell (3000mah) batteries but the charger keeps saying error and stops the charge.

Any ideas why this is???

[900supersport]

What charge current are you using, sounds like you are trying to pull more than the psu can supply.

[secretman]

lower the charge amp, you pass the input amp max and the voltage drop...
happen to my on  6 cell ,need better power supply :P

[Balders]

I have a B6 and charge my 4S packs on it.  Max amps you can push through is about 3.5  Try setting the charge rate to that.

[neil-liverpool]

I can only get a charge rate of 2.5 amps to work on the 4s batts. do I need a bigger power supply?? I would of thought a 5amp supply would of done the trick.

Also, one of the new batts says connection error  when I try to charge it, but it powers up the quad ok. any idea what that could be????

[coastersteve]

It';s the Watts the charge can charge. I think the IMAX is only 40-50watt. Volts X Amps = Watts 

[Flyinegypt]

Yes, the standard Imax B6 is rated for 50 watts max output. I have the uprated B6AC 80W version which has an 80 watt max output. However, I have to supplement it with an external fan to keep it cool when charging a 3S 4500 pack at 1C.

[secretman]

I can only get a charge rate of 2.5 amps to work on the 4s batts. do I need a bigger power supply?? I would of thought a 5amp supply would of done the trick.

Also, one of the new batts says connection error  when I try to charge it, but it powers up the quad ok. any idea what that could be????

for the batt connection, the ****** cheap dean';s adaptor that come whit the charger  change the dean';s for a good one