This small and lightweight UBEC features a high efficiency switching mode BEC, providing better heat dissipation when compared to linear voltage regulation. The shielded PCB design and output EMF coil provide a stable, low noise voltage output. The HKU5 also features built-in reverse polarity protection.
I connect the input of ubec and output of battery in a wrong way... which mean red connected to black and black connected to red. Suddenly, it sparked and now it is broken. It doesn't work at all. It's better than exploding :D
This UBEC requires at least 7.6V (7.3 at no load) input voltage. 2s LiPo batteries can be discharged down to 6V (6.4 to be safe), which is way under its minimum supply voltage. It outputs 5.3V at no load, and quickly drops to about 4.5V output voltage at 1A load. This can't be safely used to power flight controllers which require close to 5V supply. It should be safe for most receivers. If using 2s LiPo, set your LiPo alarm no lower then 3.8V per cell to ensure full output voltage.
Halvard. You are correct in your accesmemt. However this UBEC would not be the one to use in a 2s set up. This unit is for 3s and up. General use is to power inline with power battery for wieght savings.
I have had this unit on my eflite p38 for years. I run twin motors and 9 digital metal gear 9g servos withought a hiccup.
Purchased three of these for ignition voltage regulator duty in my large scale gas planes, when paired up with the turnigy 2100 Lipo receiver pack, you can run an engine all day versus the 4 cell NiMH packs. Working great in my planes, the 3A version works great too, but is a little longer and slightly heavier, but cost less. Next order, I will order more for spares for future projects.