MAHA MH-C777 Instruction Manual

MH

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C777 Universal Charger

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of 7MH-C777 Universal Charger Conditioner Instruction Manual

10/25/2009

http://www.bills2way.com/equip/c777manual.html

Conditioner Instruction Manual

Introduction

Thank you and congratulations for your purchase of the Maha MH-C777 Desktop Rapid Charger and
Conditioner! This innovative product simplifies charging of most rechargeable batteries either at home
or in the car. After reading the manual if you have any difficulties using your charger or understanding
this manual, please feel free to call tech support during business hours (8:00a.m.-5:00p.m.) pacific time
at 1-800-376-9992.

Safety Precautions

Use of this device is intended for charging and conditioning NiCD (Nickel Cadmium) and NiMH
(Nickel Metal Hydride) rechargeable batteries only.

Do not attempt to use product on non-rechargeable battery packs.

Check with the manufacturer of your rechargeable battery to see if the rapid charger rate is appropriate
(650mAh). Please follow the guidelines for your individual battery. Do not use device if not appropriate
for your battery!

Use only power adapters (wall and auto) supplied by Maha for your rapid charger.

Do not attempt to use rapid charger when starting your car. Unplug unit from cigarette lighter when
starting the vehicle.

Unit not intended for outdoor use. Use only in car or indoors.

Please familiarize yourself with the instructions and unit parts before first attempting to use. Also
familiarize yourself with your batteries' requirements.

Features and Benefits

Charges almost any type of NiCD (Nickel Cadmium)and NiMH (Nickel Metal Hydride) battery within a

range of voltage from 4.8v-12v for home use and 4.8v-9.6v for auto, regardless of shape.

Can be used as a desktop charger at home and work, or as a mobile charger for vehicle use (12v negative

Can be used for batteries for communications (cellular phones and amateur radio), laptop computers R/C

(1): Side positioning Aid (9): Magnetic temperature sensor

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of 7MH-C777 Universal Charger Conditioner Instruction Manual

10/25/2009

http://www.bills2way.com/equip/c777manual.html

Built-in conditioner, which when used to discharge battery to minimum voltage (recommended 1.0 volt
per cell), will extend the useful life of your rechargeable battery.

Reverse polarity protection and polarity switch for safety.

On board microprocessor to completely avoid over charging your battery pack. (detects -DV during
charge)

40mAh trickle charge mode after full charge.

Built-in light indicators that show approximate progress and completion of charge.

Magnetic temperature sensor when placed on battery, protects it from possible damage due to
overcharging.

ground systems only).

Both power connections (wall and auto) supplied by Maha.

Within adjustment chamber, pin connectors can be moved left, right, up and down for exact connection
with your battery pack.

and camcorders.

Diagram of Parts

(2): Guide Displacement Hole (10): Discharge button

(3): Position Aid Stopper (11): Discharge indicator

battery. It is recommended to condition a NiCD battery before every charge, and periodically for NiMH,

Note: Many battery packs have more than two contacts (see on next page). The correct contacts to use

can be found in two ways: use of a digital multimeter or trial and error. It is most convenient if you have

Page

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of 7MH-C777 Universal Charger Conditioner Instruction Manual

10/25/2009

http://www.bills2way.com/equip/c777manual.html

(4): Adjustment Bar (12): Charge status indicator
(5): Contact Adjustment Arm (13): Magnet (Position aid)
(6): Polarity switch (14): Adjustment chamber latch
(7): DC Power input (15): Clip lead accessory (optional)
(8): External clip power cord socket (16): Adjustment chamber

Quick Reference Guide

This section is a guideline to bring you through the process, if you have any problems, please refer to
First Time User Tips.

Conditioning

Also known as discharging a battery pack to one volt per cell (minimum voltage a single cell should be
discharged) to ensure battery pack will maintain its recommended capacity and extend the life of the

except when new. All new NiMH batteries need a "wake up" period. It is important to cycle (discharge
and charge) new packs 3-5 times so it can hold a full charge. Note that conditioning is not required, but
highly recommended for the life of your battery pack.

1) Supply power to unit with 18v wall adapter when 110v AC is available or 12v cigarette lighter
adapter for use in your vehicle.

2) Locate the charge contacts on the battery pack.

a digital multimeter that you can use to find the correct contacts (positive and negative). But if you do
not have a digital multimeter, you can use your rapid charger to find the correct positive and negative
contacts. The charger has built in protection and a reverse polarity switch so trial and error method will
not damage the battery pack or the rapid charger. Also note that some battery packs are equipped with
diode protection and make it impossible to discharge using charging contacts. In this situation it is
recommended to use the other contacts designed to power the electronic device. Please feel free to call
tech support for help if this is a problem.