VolantexRC Vector Series Owner's Manual - page 9
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However, even before this reduction in power , if you find that more than the
typical amount of throttle/ power is required to cruise or climb you should land the
model and disconnect the battery immediately to prevent over-discharge.
And while it is possible to continue running the model after the soft LVC occurs,
this is NOT recommended. Continued discharging can result in reaching the 5.0V
‘hard’ LVC which may cause permanent damage to the LiPo battery resulting in
reduced power and flight duration during subsequent fights ( or failure of the
battery entirely which is not covered under warranty).
Also, it is not recommended that you run to the soft LVC every time you run.
Instead you should be aware of the power level of the battery through out, and if
at any time the boat begins to require more throttle/ power than typical to maintain
speed you should let the boat run back and disconnect the LiPo battery
immediately. Constantly discharging the battery to the soft LVC can still cause
permanent damage to the battery so it’s best to use a timer or stop-watch to time
the duration of your running and to stop flying at a reasonable time before the soft
LVC is reached.
IMPORTANT NOTE: DO NOT LEAVE THE LIPO BATTERY CONNECTED TO
THE ESC UNLESS YOU ARE READY TO RUN. IF THE BATTERY IS LEFT
CONNECTED TO THE ESC WHEN IT IS NOT IN USE THE LIPO BATTERY WILL
BE OVER-DISCHARGED BY THE SMALL AMOUNT OF CURRENT THE ESC
CONSUMES.
It can sometimes take a few hours or even up to a few days to over-discharge the
battery this way but doing so will likely cause permanent damage to or failure of
the battery entirely (which is not covered under warranty).
IMPORTANT NOTE: DO NOT STORE THE LIPO FLIGHT BATTERY FULLY
CHARGED.
For improved safety and longevity of the LiPo battery it’s best to
store it only partially charged for any length of time. Storing the LiPo battery at
approximately 50% charged (which is approximately 3.85V per cell) is typically
best, however it will take some careful management of the charge time and the
use of a voltmeter to achieve this voltage.
If you have the equipment and skills to achieve the 50% charge level for storage it
is recommended. If not, simply be sure to not store the battery fully charged
whenever possible. In fact ,as long as the battery will be stored at approximately
room temperature and for no more than a few weeks before the next use, it may be
best to store the battery in the discharged state after the last flight (as long as the
battery was not over-discharged on the last flight).