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Twister Medevac
B. LITHIUM POLYMER FLIGHT BATTERY
Charging lead only
The Lithium polymer (Li-po) flight battery is a high power battery designed to give a flight time of 10 minutes
per charge. It is supplied in a partially charged state.
As well as a red JST polarised lead (for connection later to the 3-in-1 board), the battery is also fitted with a
white 3-pin polarised connector. This is the charge lead. Connect this white plug to the 12V charger.
Always leave the battery in a partially charged state. Never leave it in a discharged state.
The battery should be recharged when the LBW beacon on the tail of the helicopter starts to flash blue, or
if you notice the helicopter is losing power. At this point land and recharge the battery.
Do not be tempted to run the battery past this stage as you will be over-discharging and the battery may be
damaged.
WARNING!
We recommend that you use only the supplied Twister charger with this battery.
WARNING!
Over-discharging will shorten the life of the battery or destroy it. Stop flying immediately the LBW (Low
Battery Warning) beacon starts flashing and recharge the battery.
WARNING!
Do not short circuit—battery may explode. See page 23.
PLEASE READ THE SAFETY PROCEDURES FOR HANDLING LI-POLY BATTERIES AT THE END OF THIS
MANUAL ON PAGE 23 BEFORE PROCEEDING FURTHER.
C. CHARGING THE FLIGHT BATTERY
The charger is designed to automatically charge the Li-Po battery in about 1 hour from a discharged state.
The 12V DC automatic charger is powered by the 240 Volt power supply illustrated above.
Alternatively, you can use a 12 volt sealed lead acid battery to power the DC automatic charger.