"Cam" Veteran Location: Asia
| If you are flying with packs in series or parallel, they should have the same cell count, same capacity and be the same cell type.
When charging two packs like this you would use “Sync” mode on the Duo because this would not only balance all the cells, it will balance the packs to each other.
Hyperion encourages using smaller packs (upto 6S) wired together to make larger packs. If you have a cell go bad you only lose half the battery. Smaller packs also dissipate heat better and they are also easier to get in and out of models.
You can independently charge any combination of batteries at the same time on the DUO using “Solo” mode. You simply press the “ch” (change/channel) button to alternate between the displays – like this the DUO is two charges in one case, sharing a screen.
The DUO balances packs by discharging high cells at upto 300mA per cell. The decimal point on a cell’s voltage will ‘blink’ when that cell is being discharged. The DUO will also completely stop the current once a minute to accurately check all cell voltages before resuming. It does balance continuously throughout charging.
“Charge” or “parallel” balancers are costly to make as it's difficult to calibrate all the chargers and get them to work in synchronous.
To upgrade the firmware on the DUO (and NET) you need one of these, also used to program the TITAN ESC’s and interface the Emeter: http://www.aircraft-world.com/shopexd.asp?id=4843 And also a servo extension lead – you have to change the pins.

You will be very pleased with the DUO. The menu’s are easy to navigate, loads of safety features, loads of battery information, free firmware releases, (a firmware upgrade can take 3 seconds once you’ve plugged the charger into the PC). And many intuitive features to keep you flying, including Solo and Sync Modes, Balance charge (balance only), Temperature, time cut-offs, LiPo, LiIon, A123, NiCd, NiMh and Pb chemistry support, A123’s can be charged at 10 Amps on BOTH ports simultaneously, (upto 5 cells on each port, or 6 and 4 for 10Amp charge), There’s now an automatic start so you don’t have to confirm that you’ve go the settings correct for your battery (If you’re confident), and you can view all the voltages and values as long as the batteries are connected.
There is PC logging software: http://media.hyperion.hk/dn/pc/all.htm And also the one made by "Dominik" on E-Zone (In German) 
LAST NOTE: At work we use 600W Power Supplies. That's 15V at 40Amp
You will need at least a 400W PSU (15v) for the DUO. We normally run them at 13.5V. |