Well since I don't plan on charging any packs over 2C at most...so figure at most i'd be around 12 amps, I don't think i'm going to have an issue

Is there a way to do minor adjustments to this charger if it reads say 8.38v at tech vs 8.40v? I thought that was an option to adjust how far it will charge up each cell, but I didn't find it anywhere.

I am using the Hitec ePower 30amp 12-18V 540w power supply with this charger. http://www3.towerhobbies.com/cgi-bin...&I=LXDAKK&P=ML

I did test 2 x 2s lipos at 30amps each. That is the Max the charger will go, but this power supply is not big enough for this. It does have enough power to do any combo of 50amps and that is more then enough for me! So it would do 2 x 25amps or 1x30a and 1x20a or in theory the combine both ports for 1x50amps, but I didn't try that.

It was discussed a bit at the end of this thread: http://www.rcgroups.com/forums/showthread.php?t=1801512

You want to look in the >120 page range. I'm not sure if they had an answer but I remember seeing something about it.

I noticed the same thing, final voltage is slightly under 4.2v. The above mentioned thread will point you to page 17 of the 308 manual. I'm going to adjust the "chg end current" from default 10% to 8 or 7%

Hi guys,

I just picked up one of these chargers and was wondering what kind of wattage I would need to charge a 2s and a 4s at 20 amps at the same time?

Thanks for the help

I don't know exactly, but it would need to be bigger then the one I posted above. 4s @ 20 amps is the same as 2s @ 40 amps. So the max the one above would do is 20 amps for the 4s and then 10 amps for the 2s when doing it at the same time. (Or 15 amps for the 4s and 20 amps for the 2s.) The Watts you need also depends on how many volts your power is running. The higher the volts the lower the Watts you will need.

The one above is rated 18v 540w.

Got my 308 coming tomorrow. Looking forward to it. I'm assuming I should go ahead and do the firmware update from the start if it's not current?

All you need to do is just adjust the charge end voltage. For instance, at IIC in Vegas earlier this month my packs kept coming off at 4.18 (charger was set to 4.20), so I upped the charger to 4.22 and packs came off at 4.20. Good to go.

Figure on about 630 watts of supply power. Some extra recommended.

Got mine tonight. This thing is sweet. I love the screen and how everything is right there without having to scroll around.

I did notice a discrepancy between the displayed full pack voltage and the individual cell voltages on channel 1 (total voltage was reading lower than the cells added up). So, I just went into the calibration screen and took measurements with a volt meter and adjusted to make them match. Cake.

Just picked up one of these chargers and need help with picking a power supply.Will be charging 1s and 2s lipos.I have a muchmore 24 amp power supply and I think it should be enough.Any thoughts?

Plenty. I have a Protek 20 amp and it's way more than enough for charging two 2S packs at reasonable amperage levels on this charger.

Depends on what charge rates you are trying to achieve, and if you are charging one at a time, etc. Should be just enough to charge one 2S all out, or a pair of 1S. But not a pair of 2S at the same time.

I charged two 2S at 5A each with no issue. I don't recall exactly what the charger said I was pulling from the power supply but it was less than half capacity IIRC.

When I typed all out I was thinking of a little more than 5A, rather the 30A capability of the charger. I agree, a pair of 2S at 5A would be easy for the 24A supply. Probably around 7~8A from the supply.