Fast1rc

This charger sounds great with all of its features and max options and that it is AC and DC, but some concerns I had. Maybe some racers who actually use this Hitec X4 AC Plus ACDC Multi-charger can chime in and give thier real world experiance.

Here is some thoughts:
This Hitec X4 AC PLus 4 port charger offers;
built in 22 amp power supply.
4 independent 50-watt power outputs, for a total output power of 200 watts.

Watts = Volts * Amps or Watts = Amps x Volts
For example 1 amp * 110 volts = 110 watts
THen reverse:
Amps = Watts / Volts
For example 12 watts/12 volts = 1 amp

Conversion: watts from Amps times Volts:
88.8w = 6.0A x 14.8v (4s)
74.0w = 5.0A x 14.8v (4s)
37.0w = 5.0A x 7.4V (2s)
22.2w = 2.0A x 11.1V (3s)
So based on this basic rule, it seems that 50W per channel is not enough to charge a 4s LIPO pack at 6.0Amps or even 5.0Amps (more like 3.38A):

....Or am I reading this conversion incorrectly?
If it is only 50Watts per independent chanell then charging a 4S would be very low Amps, UNLESS it shares the total 200Watts and 22Amps.
Has anyone tried charging 2 x 4S packs at the same time to see what the true Amps charge rate is during the charge cycle on the 2 x 4S packs are on each channel?

--

For example my current charger is the Hyperion EOS 0720i NET3-AD Li/NiMH/A123 Balancing AC/DC Charger and the one cahnnel can handle up to 150W, so then charging at 6.0Amps for a 4s works good. But this is only a Single battery charger.


Again, maybe I am just reading it incorectly on the Hitec charger and hopefully it SHARES the total 200 watts.

WindDrake

iTrader: (13)

I own basically the same charger.

It's limited to 50w per channel, so your math is right. A regular 4S would take a while.

DanielC.

iTrader: (56)

Your assumptions are correct. For higher voltage packs, since the charger is limited to 50W per channel, you will not be able to charge at 5 amps. For many who race mostly 1/10 off road this charger is more than ample since you wouldn't be using anything over 2s to begin with. For 1/8 electric or just higher voltage packs in general I'd recommend the Hitec X2 if you want to stick with that brand. The X2 can do 200W / channel and a max of 10A IIRC.

Fast1rc

Thanks for the heads up as there will be some current 1/10 racers mad from thier purchase when we go into the 1/8 electric season. GLad I did the research.

So is there a dual charger that is:
+ AC/DC
+ Charge minumum of 2 x 4s at 6.0Amps
(basically 100Watt per channel and 200 Watts total)
+ Also a total of at least 15 amps?
+ 2 independent balancing ports
+ not cost an arm and a leg

I know I ask for a lot, LOL.

erc55

When charging 6 volts receiver packs this charger doesn´t peak, and it only stops when it hits the preprogrammed max capacity. what threshold are you using for charging these types of packs?