12 MONTH LIMITED WARRANTY
MFJ Enterprises, Inc. Warrants to the original owner of this product, if manufactured by MFJ
Enterprises, Inc. and purchased from an authorized dealer or directly from MFJ Enterprises,
Inc. to be free from defects in material and workmanship for a period of 12 months from date
of purchase provided the following terms of this warranty are satisfied.
1.
The purchaser must retain the dated proof-of-purchase (bill of sale, canceled check, credit card or
money order receipt, etc.) describing the product to establish the validity of the warranty claim and
submit the original or machine reproduction of such proof-of-purchase to MFJ Enterprises, Inc. at
the time of warranty service. MFJ Enterprises, Inc. shall have the discretion to deny wa rranty
without dated proof-of-purchase. Any evidence of alteration, erasure, or forgery shall be cause to
void any and all warranty terms immediately.
2.
MFJ Enterprises, Inc. agrees to repair or replace at MFJ’s option without charge to the original
owner any defective product under warranty, provided the product is returned postage prepaid to
MFJ Enterprises, Inc. with a personal check, cashiers check, or money order for $7.00 covering
postage and handling.
3.
MFJ Enterprises, Inc. will supply replacement parts free of charge for any MFJ product under
warranty upon request. A dated proof-of-purchase and a $5.00 personal check, cashiers check, or
money order must be provided to cover postage and handling.
4.
This warranty is NOT void for owners who attempt to repair defective units. Technical consultation
is available by calling (662) 323-5869.
5.
This warranty does not apply to kits sold by or manufactured by MFJ Enterprises, Inc.
6.
Wired and tested PC board products are covered by this warranty provided only the wired and tested
PC board product is returned. Wired and tested PC boards installed in the owner’s cabinet or
connected to switches, jacks, or cables, etc. sent to MFJ Enterprises, Inc. will be returned at the
owner’s expense unrepaired.
7.
Under no circum stances is MFJ Enterprises, Inc. liable for consequential damages to person or
property by the use of any MFJ products.
8.
Out-of-warranty Service: MFJ Enterprises, Inc. will repair any out -of-warranty product provided the
unit is shipped prepaid. All repaired units will be shipped COD to the owner. Repair charges will
be added to the COD fee unless other arrangements are made.
9.
This warranty is given in lieu of any other warranty expressed or implied.
10. MFJ Enterprises, Inc. reserves the right to make changes or improvements in design or manufacture
without incurring any obligation to install such changes upon any of the products previously
manufactured.
11. All MFJ products to be serviced in -warranty or out -of-warranty should be addressed to MFJ
Enterprises, Inc., 300 Industrial Park Road, Starkville, Mississippi 39759, USA and must be
accompanied by a letter describing the problem in detail along with a copy of your dated proof-of-
purchase.
12. This warranty gives you specific rights, and you may also have other rights, which vary from state to
state.
MFJ-633
Intelligent Battery Charger
Instruction Manual
INTRODUCTION
In order to ensure the best results from the MFJ-633 Intelligent Battery Charger, please
read the following instructions carefully before using the charger. The MFJ-633 Intelligent
Battery Charger has a microprocessor built-in that automatically controls the charging of
Nickel Cadmium (Ni-Cd) and Nickel Metal-Hydride (Ni-MH) rechargeable batteries of the
following sizes: AAA, AA, C, & D. The MFJ-633 uses –
∆
V detection to control the charging
of Ni-Cd batteries and +
∆
V detection to control the charging of Ni-MH batteries. This ensures
that batteries with different brands and capacities will always be fully charged. The MFJ-633
also has discharge, deep conditioning, and self test modes of operation.
The MFJ-633 charges 9V Ni-Cd and Ni-MH rechargeable batteries using a continuous
trickle charge.
Specifications:
QUICK START
1.
Plug the AC/DC adaptor into the wall socket. Then plug the jack into the charger.
2.
Open the lid by sliding the “OPEN” button downward.
3.
Insert the batteries you want to charge. For AAA, AA, C, or D sizes, insert a maximum
of two batteries of the same size and type per compartment. For 9V batteries, use either /
both of the 9V Slots located between Compartment 1 and Compartment 2.
(Steps 4 to 7 are for AAA, AA, C, or D size batteries)
4.
If you need to discharge the batteries, press the yellow DISCHARGE button.
5.
If you need to deep condition your batteries, press the yellow DISCHARGE button and
hold it until the MFJ-633 beeps and the green READY LED flashes. Then release the
DISCHARGE button.
6.
The compartment that has batteries inserted first will be charged first. If batteries are
placed in both compartments at the same time, Compartment 1 will be charged first.
7.
The batteries are ready to be removed from the compartment when the green READY
LED for the corresponding compartment begins to flash.
(Steps 8 & 9 are for 9V batteries)
8.
The MFJ-633 can charge one or two 9V batteries at a time.
9.
9V batteries cannot be discharged or deep conditioned. Once the battery is placed into
the slot, the red LED under the battery will be illuminated until the battery is removed.
Input
12 VDC @ 500 mA
Charge Current
PWM Constant Pulse Current – 800 mA
Boost Charge Current
½ Constant Pulse Current
Trickle Charge Current
1/10 Constant Pulse Current
Discharge Current
300 mA
Detection Method
-
∆
V & +
∆
V
