Modtech EM-100 Operator's Manual - page 3
5
BATTERY PACK OPERATION
The EM-100 is an intelligent,
lithium ion
power pack. It protects itself
automatically in several ways:
1. High voltage condition:
The EM-100 will inhibit any charging
(disallow any power input) and only allow discharging (power output) in
the case of high voltage.
2. Low voltage condition:
The EM-100 will inhibit any discharging
(power output) and only allow charging (power input) in the case of low
voltage.
3. High temperature condition:
The EM-100 will inhibit either charging
or discharging until the temperature is below satisfactory limits.
4. Low temperature condition:
The EM-100 will inhibit any charging
and only allow discharging until the temperature is above a satisfactory
limit. In the case of
extreme cold
, discharging and charging both will be
disabled.
5. High charge current:
The EM-100 will inhibit charging momentarily
in the case of high charge (input) current. Charging will be re-enabled
after a short time, but will be disabled again quickly if charge current
remains too high. In the case of extremely high charge current, the EM-
100 will become disabled and must be connected to the charger to re-
enable. This should never occur when the EM-100 is properly charged
using the Modtech Corp. supplied, appropriate, designated chargers.
6. High discharge current:
The EM-100 will inhibit output current
momentarily in the case of high discharge current. Output will be re-
enabled after a short time, but will be disabled again quickly if discharge
current remains too high. In the case of extremely high output current,
the EM-100 will become disabled and must be connected to the charger
to re-enable.
7. External fuse:
The EM-100 is programmed to disable current flow,
either charging (input to EM-100) or discharging (output from EM-100) at
levels below the rating of the supplied fuse. In the event that the fuse
becomes open (blown), the EM-100 may be damaged or operating
improperly. In this case, the battery pack should be removed from
service immediately and sent for inspection and repair if needed. In no
event should the external fuse be replaced with any fuse other than one
identical to the factory supplied type, 10A, 32V, mini-blade type fast blow
fuse.
6
8. Internal TCO fuse:
The EM-100 includes a Temperature Cutoff Fuse
(TCO) device internally. This device will open in the case of either
excessively high current or temperature. If this internal fuse opens, the
battery pack will output no power and an error will be indicated when
recharging is attempted.
The pack must be removed from service
in
this case.
The TCO cannot be replaced or repaired by the user
.
MAINTENANCE AND STORAGE
Moisture and heat are deleterious to battery pack operation and life.
Refrain from exposing the pack to rain, snow, or moisture of any kind.
When storing the pack, a cool, dry location is mandatory for good
preservation of capacity and life. It is also advantageous to store packs
for extended periods at 40% to 50% charge level if possible. This will
optimize shelf life and service life.
Battery packs placed in prolonged storage should be checked once or
twice a year. When a pack is seen to decline to 10% charge level, it may
be placed on the charger for approximately 1 hour to return it to 50%
charge level. If the pack is allowed to discharge fully, it will become
disabled but not otherwise damaged. In this case, a very short flash of
the LED will occur when the test push button is pressed (see Table 1). A
disabled pack should be charged at the user’s earliest convenience,
preferably for at about one hour if it is to be returned to storage.
If the pack is to be transported for recycling or other purposes, or at time
of disposal or recycling,
remove the external fuse
. This will electrically
disconnect the pack contacts from the batteries inside and provide a
safer state for avoiding short circuit conditions. The fuse may be simply
re-installed when the pack is to be returned to service.
DISPOSING OF BATTERY PACKS
Lithium ion
battery packs are more environmentally friendly than many
other types of batteries (e.g. lead acid or nickel cadmium types). Always
dispose of battery packs according to federal, state, and local
regulations. Contact a recycling agency in your area for recycling
instructions and locations.
Always treat battery packs with care, do not incinerate or burn, and avoid
crushing or compacting. Remove the external fuse when the pack is to
be discarded or recycled. Do not allow the pack to become submerged
in water.