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MH-C800S
Eight Cell Smart Charger
Thank you for purchasing the Powerex MH-C800S
battery charger. Read these instructions carefully and
thoroughly before operating this unit. IMPORTANT
SAFETY INSTRUCTIONS. READ AND SAVE THESE
INSTRUCTIONS.
VARIOUS MODES
This section explains various charging modes and when to use them. To
enable each mode, refer to the “Operation” section.
Rapid Charge Mode (Default)
GENERAL PRECAUTIONS
• Do not charge batteries other than NiMH or NiCD. They must be able
to accept a 1.0A (Standard mode) / 0.5A (Soft mode) rapid charge
current.
• Do not use the default Rapid Charge mode on batteries rated under
800mAh. To charge them, use the Soft Charging mode (refer to “Soft
Charging Mode”).
• Do not expose the unit to rain or moisture due to the risk of fire.
• Do not operate the charger if it appears damaged in any way.
• Always place the battery cells with positive tip facing the top. Incorrect
polarity may cause fire or explosion. Observe polarity diagrams located
on the charger.
• Do not allow the unit to be exposed to direct sunlight. Operate in well-
ventilated area.
• Do not allow the battery terminals to become shorted.
• To reduce the risk of damage to the power cord, always pull by
connector rather than the cord.
FEATURES & SPECIFICATIONS
• Eight independent charging slots. Charges 1-8 AA or AAA batteries.
• Selectable Rapid Charge (default) and Soft Charge mode.
• Recharge in approximately 1 to 2 hours.
• Selectable conditioning / rejuvenation cycle.
• Worldwide power supply.
• Shortest recharging time (approximately 1 to 2 hours).
• Suitable for batteries with capacity greater than 800mAh.
Soft Charging Mode
• Maximizes battery life and performance (recharging time
approximately two to four hours).
• Suitable for most batteries.
• Recommended if recharging time is not critical.
Conditioning Mode
• A special mode which rejuvenates and cycles batteries. Applies a
special initial charge, discharge and recharge cycle which can
restore battery performance (requires up to 16 hours to
complete).
• Conditioning cycle can be used to rescue degraded batteries and
exercise infrequently-used batteries.
• Recommended once every ten normal charges for NiMH batteries
to ensure good performance.
OPERATION
Rapid Charge Mode (Default)
1. Connect the power supply unit DIN connector to the charger as shown
in the figure below.
Rapid Charge Current: 1.0A
Microprocessor: Eighth-generation MH-NM7008 Powerex
Precision Microprocessor
Charge Time*: 1 to 2 hours (Standard), 2 to 4 hours
(Soft)
Input Voltage: AC 100-240V 50-60Hz
* Charge time will vary depending upon the brand, capacity, and
condition of batteries being charged.
PRINTED IN TAIWAN A03-3713377-451
Then, plug the adapter into a compatible outlet (100-240VAC,
50/60Hz).
TIP: When operating the charger outside of its intended region of use,
simply obtain a power cord with a suitable plug type or use a plugchanger. Transformer is not necessary.
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2. Insert AA and/or AAA batteries.
NOTE: Ensure that the batteries are pressed down all the way to
ensure optimal contact.
3. When the battery is correctly inserted, charging will commence for that
slot.
My battery cannot be detected, what should I do?
First, make sure the battery is properly seated. Insert the battery so
that the negative end touches the charging contacts first, then tilt it
forward until it clicks. You can also try removing the battery and
inserting it into another slot. If the battery still cannot be recognized, it
might no longer accept a charge and should be replaced.
It is normal of the charger to make a faint clicking sound, which is
a result of the pulse charging.
When the charging is nearly complete, the batteries will become
hot to the touch. Battery temperature will quickly drop after charging
is finished.
The charger is equipped with a four-level battery gauge which displays
the charging progress.
4. Insert the remaining batteries.
5. Soft Charging mode will remain activated as long as there are batteries
in the charger (even if charging is completed). The charger will reset to
Rapid Charge mode (Soft Charging symbols disappears) when all
batteries are removed.
Conditioning Mode
NOTE: Conditioning is activated for all battery slots simultaneously and
cannot be activated for each individual battery.
1. Remove all batteries from the charger, if any.
2. Insert one battery in any slot.
3. Within five seconds, press and hold the “CONDITION” button until
”Condition” symbol is displayed on the LCD screen.
4. Insert the remaining batteries.
5. The condition cycle will first apply an initial charge, discharge then
recharge the batteries.
Solid or
Flashing
Flashing Flashing Flashing
0-50%
charge
Flashing
Extremely low charge.
Typically indicates abnormal or
aged batteries. Conditioning is
recommended.
50-80%
charge
80-100%
charge
Flashing all together
Battery fault
Charging
completed.
Soft Charging Mode
NOTE: Soft Charging is activated for all battery slots simultaneously and
cannot be activated for each individual battery.
1. Remove all batteries from the charger, if any.
2. Insert one battery in the any slot.
3. Within five seconds, press and hold the “SOFT” button until “Soft
Charging” symbol is displayed on the LCD screen.
Initial Charging Discharging Standby for
Recharging OR
Recharging
It is normal for all symbols to disappear from one or more slots toward
the end of discharge. This indicates that discharging is nearly
completed and recharging will commence soon.
During discharging, batteries that finish before others will show
“CHARGE” symbols. However, actual charging will not commence until
all batteries have finished discharging.
It is also normal for the left side of the charger to become warmer
during the conditioning cycle.
Finished
PRINTED IN TAIWAN A03-3713377-451
Manufactured By:
MAHA ENERGY CORP.
1647 Yeager Ave. La Verne, CA 91750
Tel: 1-800-376-9992, 1-909-392-1568
http://www.mahaenergy.com/
Copyrighted ® 1998-2007 Maha Energy Corp.
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