Standard diode for NMC batteries 1V voltage drop.
Most modern avionics can handle input voltages well above the battery’s maximum voltage of 16.8V.
Special caution must be used with certain older avionics as these sometimes have voltage limits between 15 and 16V.
A diode can be installed in the power supply line of the specific device, which would result in a voltage drop of about 0.8V (up to 1.0V under load).
This will ensure the input voltage will remain below the manufacturers’ specified limit. It’s not advised to install a diode in the battery’s main supply line, as all instruments would be affected by this, which may not be necessary.
The diode’s maximum rated current must be equal or higher than the fuse/circuit breaker.
Multiple diodes may be placed in series.

Specifications:
Max Voltage: 800V
Max Current: 6A
Peak Forward Surge Current: 250A
Voltage drop at 6A: 1.0V
Max. DC Reverse Current at: 1mA
Operating temperature: -55 to +150 °C