Since 2003 there has been a name for dual security in minimum space: PowerBox Sensor!
PowerBox Sensor
Features
double-regulated output voltages for receivers and servos
5.9V output voltage
Separate voltage display for each battery
Minimum value memory alerts the user to voltage collapses
Support for three battery types: LiPo, NiMH / NiCd, LiFePo
Suppression of any servo feedback currents which may occur
Technical Data
Operating voltage 4.0V - 9.0V
Power supply 2S LiPo, 2S LiIon, 2S LiFePo, 5S NiCd/NiMH
Current drain Power-on state 30mA
Current drain Standby 5µA
Maximum load current Peak 2x4A
Drop-out voltage 0.3V
Output voltage 5.9V regulated
Dimensions 65 x 23 x 26 mm
Weight 35g
Temperature range -30°C to +75°Ca
Shipping & Tax not included