Muchmore LiPo Batteries - Manual (Page 3)

7. NEVER continue to charge LiPo batteries if the
charger fails to recognize full charge. Overheating or
swelling of the LiPo cells is an indication that a problem
exists and the batteries should be disconnected from the
charger immediately and placed in a fireproof location!!
8. NEVER apply a trickle charge to LiPo batteries.
9. Using a charger which has a battery temperature monitor
is very helpful for charging LiPo batteries. This can help to
ensure a full charge and also prevent unwanted heating at
the same time. Set the charger’s maximum battery
temperature to approximately 115°F (46°C).
IMPORTANT WARNINGS: Be sure to follow these important
warning statements regarding the discharging of LiPo batteries:
• NEVER LEAVE A LIPO BATTERY UNATTENDED AT ANY
TIME WHILE BEING DISCHARGED!!!
• ALWAYS discharge LiPo batteries in a fireproof location,
which could be a container made of metal (such as an
ammunition box) or on ceramic tile. Monitor the charge area
with a smoke or fire alarm, and have a lithium approved “ABC
type” fire extinguisher available at all times.
1. It is strongly recommended to use an ESC which is
designed to handle the low voltage cutoff points for LiPo
batteries (always follow the instructions provided with the
ESC for proper operation). Discharging LiPo batteries below
2.5V per cell can cause permanent damage and limit the
number of times the battery can effectively be used again.
2.NEVER discharge LiPo batteries at currents which exceed
the discharge current rating of the battery as this can often
cause a cell to overheat. Do not allow a LiPo cell to exceed
140°F (60°C) during discharge.
It is very important to remember that crash damage to LiPo
batteries is much more dangerous than with NiCd or NiMH
cells. It might appear that no physical damage occurred to a
pack after a crash. However, LiPo batteries can often have a
delayed chemical reaction, and while they may appear to be
safe immediately after removing them from the crash they
can suddenly begin to smolder, emit smoke and catch fire
even after 30 minutes or an hour!! After a crash, remove the
LiPo battery from the model but DO NOT immediately place
it in a car, pocket or flight box. Instead, place the battery in a
fireproof location and observe it for safety reasons. If
possible, leave the battery in the safe location for 24 hours.
CAUTION! Cells may be hot! DO NOT allow the battery’s
internal electrolyte to get in the eyes or on skin – wash
affected areas with soap and water immediately if they come
in contact with the electrolyte. If electrolyte makes contact
with the eyes, flush with large amounts of water for 15
minutes and seek medical attention immediately!
Carefully inspect LiPo batteries which have been involved in
a crash for even the smallest of cracks, splits, punctures or
damage to the wiring and connectors.
BATTERIES INVOLVED IN A CRASH
CONNECTING TO AN ESC & DISCHARGING
page3
4. Set the charger’s output current to NO GREATER than the
“1C” rating of the battery. A battery’s “1C” rating equals the
amount of current needed to fully charge the battery in one
hour. For example, a battery with a capacity rating of
1200mAh has a 1C charge current rating of 1200mA (or 1.2
amps). A battery rated at 640mAh of capacity has a 1C rating
of 640mA (or 0.6 amps).
5. Command the charger to start the charge process.
6. ALWAYS monitor the battery and charger during the entire
charge process! NEVER leave the battery and charger
unattended during charge!
• For long term storage it is recommended to charge the cells
fully, then discharge them to 50-60% of their capacity.
• Store battery at room temperature in cool or shaded area,
ideally between 40-80°F. Temperatures exceeding 170°F for
greater than 1 hour may cause damage to battery and
cause a fire.
• Do not expose battery packs to direct sunlight for extended
periods of time, or place in direct contact with any liquids. If
batteries come in contact with water, immediately dry the
battery with a clean towel.
• When transporting LiPo batteries, store them in a fireproof
container. NEVER leave batteries lying loosely anywhere in
the car (in the trunk, backseat, floor, etc.).
• ALWAYS make sure all plugs / connectors on the LiPo
battery are covered, to prevent an accidental short. Small
sections of fuel tubing make good insulators.
• NEVER leave LiPo batteries in the car indefinitely as
temperatures inside the vehicle can easily rise far in excess
of 120°F which could damage the battery.
STORAGE & TRANSPORTATION