Spektrum SPMAR12120 User Manual

Page 18

Tips for Getting the Most from your PowerSafe System

Flight Log

The optional Flight Log is highly recommended. The Flight Log can be used to test

the battery system using the built-in voltmeter and applying a load to the servos/

control surfaces. If a regulator is used the voltage should never drop below the

rated voltage (6.0 volts) even under a heavy load. When using direct batteries the

loaded voltage should never drop below 5.0 volts.
When the system is first installed it is highly recommend that an advanced range

check be performed. (See advanced range check on page 18.) If any receiver is

performing less than optimally (higher than normal fades) that receiver should be

repositioned and the advanced range test until low fades are recorded.
During first flights with sophisticated airplanes (significant conductive materials

onboard, many high-current draw servos, carbon construction, etc.), it’s a good

practice to keep your first flight in close then confirm

the RF link performance using the Flight Log to determine the performance of each

attached receiver. Extend the distance on subsequent flights

and record the Flight Log data confirming that all systems are

performing properly.

Storing Your System

If the system will be stored for more than two weeks, it’s important that the battery

be disconnected from the PowerSafe or from the regulator (if used). The PowerSafe

draws a small amount of current (less than 1mA) even when the switch is turned off

and the battery will drain and could become damaged if left attached for an exten-

ded period. This is especially important when using LiPo batteries as irreversible

damage could occur to your batteries.
Using Nickel-Metal Hydride Batteries

The latest generation of NiMH batteries incorporates a new chemistry mandated

to be more environmentally friendly. These batteries, when charged with peak

detection chargers have tendencies to false peak (not fully charge) repeatedly.

These include all brands of NiMH batteries. If using NiMH packs be especially

cautious when charging making absolutely sure that the battery is fully charged.

It is recommended that a fast charge with a meter that monitors the input mAh be

used and that the expected charge capacity is reached during charge.