May 08, 2012, 11:01 PM AMF Years Joined Nov 2011 9,001 Posts Discussion iCharger 3010b and iCharger 306B These are rated at 1000 watts, and the 306B is a 6S charger...but they both have a maximum charge current of 30 amps. To get 1000 watts into 6S at 30 amps, each cell would have to be 5.56 volts. What am I missing? Granted, the 3010b can do 10S, and at 3.7 volts/cell, you hit 1000 watts at 27 amps. But I don't think the 306B can't hit 1000 watts charging 6S lipos at 30 amps. At 30 amps and 3.7 volts/cell, you're only hitting 666 watts.
 May 08, 2012, 11:19 PM Registered User So. Cal. Joined Oct 2004 9,734 Posts You are a savvy man! The 306B will only do 1000 watts when charging 10-12S LiFE in unbalanced mode. When charging 6S lipoly in balanced mode, it'll approach ~780 watts output at the transition from CC to CV stage. Mark
 May 08, 2012, 11:34 PM Registered User Melbourne Joined Aug 2010 449 Posts 306b 1000 watts is not a lipo specific limit 12 Life cells - 43.2v (23.1 amps for 1000 watts) 30 amps @ 25.2v (756 watts) is the 6s lipo limit Cheers
 May 08, 2012, 11:43 PM AMF Years Joined Nov 2011 9,001 Posts Thanks guys. What is a better charger? By better, I mean least \$/effective watt when charging multiple 6S lipo batteries using a paraboard or similar (and can stand up to repeated high amp usage)? The Powerlab 6 does 40 amps, enough to charge 6 3300mah batteries at 2C, but I am afraid there is something I'm missing.
May 08, 2012, 11:57 PM
Seattle
Joined Sep 2007
2,610 Posts
Quote:
 Originally Posted by N6145k The Powerlab 6 does 40 amps, enough to charge 6 3300mah batteries at 2C, but I am afraid there is something I'm missing.
The Powerlab6 will require 30v input to achieve 40 amps output on 6s. However on commonly available 24v server supplies, it still does quite well and comes close to 40 amps. See this test for more details.

http://www.rcgroups.com/forums/showt...h#post20578347

If you definitely need the full 40 amps on 6s with a 24v supply, the Powerlab8 is the just the ticket.
 May 09, 2012, 12:03 AM Registered User So. Cal. Joined Oct 2004 9,734 Posts When charging 6S, the PL6 will indeed offer higher power output if your power supply has sufficient voltage. IIRC, the PL6 will do somewhere around 850 watts on 24 volt input. Almost 30 volt input is required to hit 1000W output as it has a 40A input current limitation. The 306B is limited to 30A output so it'll take a bit longer to charge your 6S packs. The 3010B offers nothing over the 306B when charging 6S lipolys. As such, it'd be wasted \$, IMO, if one never planned to go above 6S lipoly. It'd be a tough decision for me personally. I have 4 iChargers (1 x 306B, 3 x 106B) and absolutely love them. I almost always run them at full current output and they have all been flawless. That said, I would love to have a PL6 for the extra 10A. Mark
 May 09, 2012, 12:05 AM Revolectrix Ambassador Seattle Joined Sep 2007 2,610 Posts 24v Supply - PL6 vs 306b
 May 09, 2012, 12:06 AM AMF Years Joined Nov 2011 9,001 Posts Thanks gregor99, excellent reference.
May 09, 2012, 12:20 AM
Registered User
So. Cal.
Joined Oct 2004
9,734 Posts
Quote:
 Originally Posted by Gregor99 24v Supply - PL6 vs 306b
A little misleading. A ~15-20% increase in charge power does not equate to a ~33% reduction in charge time. A fair test would be to do repeated tests with an actual 306B compared to a PL6 using the same batteries discharged to the same voltage.

Agreed that the PL6 will have lower total charge times, but not by ~33% when charging 6S lipoly from a 24 volt source.

Mark
Last edited by mrforsyth; May 09, 2012 at 12:53 AM.
 May 09, 2012, 12:21 AM Registered User So. Cal. Joined Oct 2004 9,734 Posts deleted. Last edited by mrforsyth; May 09, 2012 at 12:53 AM. Reason: computer glitches...
 May 09, 2012, 12:21 AM "Landing" in a tree somewhere Rochester, NY Joined Sep 2009 946 Posts Also realize that most paraboards are only rated for 30A. There is a 40A paraboard made for the Power Lab 6/8 but it only has JST-XT and T-Plugs and it costs \$60.
 May 09, 2012, 12:28 AM AMF Years Joined Nov 2011 9,001 Posts I think they dropped the price on the 40A, and expanded the offerings. (I just received some.)
May 09, 2012, 12:30 AM
"Landing" in a tree somewhere
Rochester, NY
Joined Sep 2009
946 Posts
Quote:
 Originally Posted by N6145k I think they dropped the price on the 40A, and expanded the offerings. (I just received some.)
Really, from where?
 May 09, 2012, 12:52 AM AMF Years Joined Nov 2011 9,001 Posts epbuddy.com
May 09, 2012, 01:39 AM
"Landing" in a tree somewhere
Rochester, NY
Joined Sep 2009
946 Posts
Quote:
 Originally Posted by N6145k epbuddy.com
Huh, guess I didn't see that.

Well epbuddy has the power lab 6 with a paraboard and the usb interface for \$198 + shipping. The 306b (which includes usb) comes with a free paraboard for \$160 + shipping. The 306b has ~50A input current limit compared to the PL6's 40A, meaning you won't need as much voltage from a dc power supply. If you've got a 30V+ power supply I'd go with the PL6. But if you're going to use a 24V or less dc supply I'd get the 306b. With a 24V supply you'd only get approx. 32.38A of charging current on the PL6, not much faster really. If you've got smaller than 6s batteries then you might like the extra 10A of charging current you'd be able to get that the PL6 has.
Last edited by Rayne; May 09, 2012 at 02:01 AM.