Page 1
SEARS
OWNERS
MANUAL
MODEL NO.
608.718571
CAUTION:
Read Rules for
Safe Operation
and Instructions
Carefully
Save These
Instructions
1 A P i 2 AMP 12 VOLT
AUTOMATIC
BATTERY CHARGER
FOR 12 VOLT BATTERIES
Operation
Repair Parts
Sears, Roebuck and Co., Chicago, Illinois 60684 U.S.A. FORM_-135726
Page 2
THIS MANUALWILLHELPYOUUSEYOURSEARSBATTERYCHARGER
SAFELYANDEFFICIENTLY
WARNING:WORKINGWITHORNEARLEADACIDBATTERIESIS DANGEROUS.BATTERIESCONTAINSULFURICACIDAND
PRODUCEEXPLOSIVEGASES.A BATTERYEXPLOSIONCOULDRESULTIN LOSSOF EYESIGHTOR SERIOUS
BURNS.PLEASEREADTHIS ENTIREMANUALCAREFULLYBEFOREUSINGYOURCHARGER.
...................................... ':' FULL12 MONTHWARRANTY,:"................... .'..
i i
j f, withintwelvemonthsfromdateof purchase,thisbatterychargerfailsdueto a defectin materialsorworkmanship, I
i simplyreturnittothenearestSearsstorethroughouttheUnitedStates,andSearswillrepairorreplaceit, freeof charge.
Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhichvaryfromstateto state.
L_ Sears,RoebuckandCompany,Dept. 698/731A, Sears IL 60684 I
Tower,Chicago,
IMPORTANTSAFETYINSTRUCTIONS
SAVETHESEINSTRUCTIONS
1. This manual contains important safety and operating instructionsapplicable to the use of battery charger model number
608.718571.
2. Donot exposecharger to rainor snow.
3. Useof an attachmentnot recommendedor soldby the batterychargermanufacturermayresult in a risk of fire, electricshock, or
injury of persons.
4. To reducerisk of damageto electricplugand cord, pull by plug rather than cordwhen disconnectingcharger.
5. An extensioncord shouldnotbeusedunlessabsolutelynecessary.Useof improperextensioncordcouldresult in a risk of fire or
electric shock. If extensioncordmust beused, makesure:
a. That pins on plug of extensioncordare the samenumber, size, and shapeof those of plugon charger;
b. That extensioncord is properly wired andin goodelectricalcondition; and
c. Thatwire in cordis propersizeasfollows:Minimum recommendedAWGwiresize forvariouslengthextensioncords usedwith
this charger:
Lengthof Cord, Feet 25 50 100 150
AWGSize 18 18 16 14
6. Donot operatechargerwith damagedcordor plug. Replacethem immediately.
7. Donot operatechargerif it hasreceiveda sharpblow, beendropped,or otherwisedamagedinanyway;take it tothenearestSears
ServiceCenter.
8. Donotdisassemblecharger; take it tothe nearestSearsServiceCenterwhen serviceor repairis required.Incorrectreassembly
may resultin a risk of electric shockor fire.
9. To reducerisk of electricshock, unplugcharger fromoutlet beforeattemptingany maintenanceor cleaning.Turningoff controls
will not reducethis risk.
PERSONALPRECAUTIONS
1. Removepersonalmetalitems such as rings, bracelets,
necklaces,and watcheswhenworking with a lead-acid
battery. A lead-acidbatterycan produce a short circuit
current high enoughto weldjewelry to metal,causing a
severeburn.
2. Someoneshould bewithin range of your voiceor close
enoughto cometo your aidwhen you work neara lead-
acid battery.
3. Haveplenty of freshwaterandsoap nearbyin casebat-
tery acid contactsskin, clothingor eyes.
4. Wear completeeye protection and clothing protection.
Avoidtouching eyeswhile working nearbattery.
5. Clothingwill bedamagedif it comesin contactwith bat-
tery acid.
6. If batteryacidcontactsskinor clothing,washimmediate-
ly with soapand water. If acidcontactseyes,immediate-
ly flood eyes with running cold water for at least 15
minutesand get medicalattentionimmediately.
7. NEVERsmokeorallowaspark orflamein vicinityof bat-
tery or engine.
8. Beextracautiousto reduce risk ofdropping a metaltool
onto battery. It might spark or short-circuit battery or
otherelectricalparts that maycauseexplosion.
9. Usechargerfor charginga LEAD-ACIDbatteryonly. It is
not intendedto supply powerto a low-voltageelectrical
systemother than in an automotiveapplication.Do not
use batterycharger for charging dry-cell batteriesthat
are commonlyused with homeappliances.Thesebat-
teriesmayburst andcauseinjury topersonsanddamage
to property.
10.
DONOTATTEMPTTOCHARGEA FROZENBATTERY...
If the caseis not cracked,removethe batteryto awarm
area until the ice hascompletelymeltedbefore attemp-
ting to charge.
WARNING-- RISK OF EXPLOSIVE GASES.
1. WORKINGIN VICINITYOF A LEAD-ACIDBATTERYIS
DANGEROUS.BATTERIES GENERATE EXPLOSIVE
GASESDURINGNORMALBATTERYOPERATION.FOR
THIS REASON,IT IS OF UTMOSTIMPORTANCETHAT
EACHTIMEBEFOREUSINGYOURCHARGER,YOUREAD
THIS MANUALAND FOLLOWTHE INSTRUCTIONSEX-
ACTLY.
2. Toreducerisk of batteryexplosion,followtheseinstruc-
tions and those published by battery manufacturerand
manufacturer of any equipment you intend to use in
vicinity of battery. Reviewcautionarymarkingon these
productsand onengine.
Y
.!
!
Page 3
GROUNDINGANDAC POWERCORD
Chargershould be groundedto reduce risk of electric shock.
Chargeris equippedwith anelectriccord havinganequipment-
grounding conductor anda groundingplug. The plug must be
plugged into anoutlet that is properlyinstalledand groundedin
accordancewith all local codes andordinances.
CONNECTIONINSTRUCTIONS
GROUNDING METHODS
GROUNDED OUTLET
OUTLET BOX
ADAPTER
DANGER-- Neveralter AC cord or plug provided-if
it will not fit outlet, have proper outlet installed by aqualified
electrician. Improper connectioncan result in a risk of an elec-
tric shock.
This battery chargeris for useon anominal 120volt circuit and
has a grounding plug that looks like the plug illustrated in
sketch A in Figure 1. Atemporaryadapter,which looks like the
adapterillustratedin sketches Band C, may be used to con-
nectthis plug toa two-pole receptacleasshownin sketch B if a
properly grounded outlet is not available. The temporary
adapter should be used only until a properly grounded outlet
can be installed by a qualified electrician.
PREPARINGTO CHARGE
1. If necessary to remove battery from vehicle to charge,
alwaysremovegroundedterminalfrom batteryfirst. Make
sure all accessories in the vehicle are off, so as not to
cause an arc.
2. Besure areaaroundbattery is well ventilatedwhile battery
is being charged. Gascan beforcefully blownaway by us-
ing a pieceof cardboardorother non-metallicmaterialas a
fan.
3. Cleanbattery terminals. Becareful to keep corrosion from
coming in contact with eyes.
Keepthe battery terminals cleanand tight. Use Searster-
minal protectors to prevent corrosion. (Available through
most Searsstores or catalog.)
4. If battery has removablefiller vents, check periodically to
make sure battery electrolyte(liquid) coversthe plates. If
liquid is down, add only DISTILLEDWATERto bring level
up. This also helps purge excessive gas from the cells.
NOTE:DONOTOVERFILL(OVERFILLINGCOULDRESULT
IN DAMAGE). For a battery without cell caps, carefully
COVER OF GROUNDED _
DAPTER
"-'_--"_ GROUNDING
(c) (B)
MEANS
Fig. 1
DANGER-- Beforeusing adapteras illustrated, be
sure that center screw of outlet plate is grounded. The green
colored rigid ear or lug extending from adapter must becon-
nected to a properly grounded outlet - make certain it is
grounded. If necessary, replace original outlet cover plate
screwwith a longerscrew that will secureadapterearor lugto
outlet cover plate and make ground connection to grounded
outlet.
follow manufacturer's charging instructions.
5. Study all batterymanufacturer's specific precautionssuch
as removingornot removingcellcaps while charging, and
recommendedrates of charge.
6. Determinevoltage of battery by referring to car owner's
manual. This charger can be usedto charge only 12 volt
batteries.
CHARGERLOCATION
1. Locate charger as far awayfrom batteryas the DCcables
permit.
2. Never place chargerdirectly abovebatterybeing charged;
gases from battery will corrodeand damagecharger.
3. Never allow battery acid to drip on charger when reading
specific gravity or filling battery.
4. Donot operatecharger in a closed-inarea or restrict ven-
tilation in any way.
5. Do not set battery on top of charger.
OPERATINGINSTRUCTIONS
Your new Sears automatic battery charger is a home type
automotivecharger designedto charge 12 V batteries of either
conventionalor maintenancefree construction. The rated out-
put current is 10amperesfor large batteriesand2 amperesfor
smaller batteries suchas on motorcycles,gardentractors, etc.
When operating your charger carefully follow the steps under
CHARGINGBATTERYIN VEHICLEorCHARGINGBATTERYOUT
OF VEHICLE. After completion of Step 7, the meter on the
chargerwill indicate the amountof DCamperesof chargebeing
deliveredto the battery. This charging ratewill taper off asthe
battery comes up to full charge. In automatic chargers the
DCCONNECTIONPRECAUTIONS
.
Connectand disconnectDCoutput clips only after remov-
ing AC cord from electric outlet. Neverallowclips totouch
each other.
.
Attach clip to battery post and twist or rock back and forth
several times to make a good connection. This helps to
keep clip from slipping off terminal and helps to reduce
risks of sparking. Attach grounding clip to engine blockor
unpainted car frame, away from gas line and carburetor.
voltage is limited toa presetlevelto preventovercharging. The
charge rate drops to a very low pulsatingrate to maintain bat-
tery charge level. If current is drawn from the battery as in
some type of standby operation, the chargerwill automatically
come on to compensate.
DEEPCYCLECHARGING-- [To charge deep cycle batteries,
you must monitor the charging to insure the size battery you
are charging permits the voltage to increase to the preset
trickletrip point of the control circuit.] If the battery becomes
very warm (_ 125°F) or appearsto be bubblingfreely charg-
ing should be stopped.
CHARGINGBATTERYIN VEHICLE
FOLLOWTHESE STEPSWHEN BATTERYIS INSTALLEDIN
VEHICLE. A SPARKNEAR BATTERYMAY CAUSEBATTERY
EXPLOSION.TOREDUCERISKOFA SPARKNEARBATTERY:
1. Position AC and DC cords to reduce risk of damage by
hood, door or moving engineparts.
2. Stay clearof fan blades, belts, pulleysandother parts that
can cause injury.
Page 4
k ¸
3. Check polarity of battery posts. POSITIVE(POS, P, +)
battery post usually hasa largerdiameterthan NEGATIVE
(NEG, N, -) post.
4. Determinewhich post of battery is grounded (connected)
to the chassis, tf negativepost is grounded to chassis (as
in most vehicles), seeitem 5. If positive post is grounded
to chassis, see item 6.
5. For common negative-grounded vehicle, connect POS!-
TIVE(RED)clip frombatterycharger to POSITIVE(POS,P,
+) ungrounded post of battery. Connect NEGATIVE
(BLACK)clip to vehicle chassisor engineblock awayfrom
battery. Do not connect clip to carburetor, fuel lines, or
sheet-metal body parts. Connect to a heavy gage metal
part of the frame orengine block.
6. Forpositive-groundedvehicle, connectNEGATIVE(BLACK)
clip from battery charger to NEGATIVE(NEG, N, -) un-
grounded post of battery. ConnectPOSITIVE(RED)clip to
vehicle chassis or engineblock away from battery. Donot
connectclip to carburetor, fuel lines, or sheet-metalbody
parts. Connectto a heavygagemetal part of the frame or
engine block. Set control to 10 amp or 2 amp.
7. ONLY - After completing steps 1 through 6, plug the
power cord of the charger into grounded120 volts, 60 Hz
outlet.
PROPERDISCONNECTPROCEDURE
1. ALWAYS unplug the charger power cord before doing
anything else.
2. Then disconnect the grounded clamp from the engine
block or framework.
3. Finally, disconnect the remaining clamp from the battery
terminal.
CHARGINGBATTERYOUT OF VEHICLE
FOLLOWTHESESTEPSWHENBATTERYIS OUTSIDEVEHI-
CLE. A SPARKNEARTHE BATTERYMAY CAUSE BATTERY
EXPLOSION.TO REDUCERISKOFA SPARKNEARBATTERY:
1. Check polarity of battery posts. POSITIVE(POS, P, +)
battery post usually has a larger diameterthan NEGATIVE
(NEG, N, -) post.
2. Attach at least a 24-inch-long 6-gauge (AWG) insulated
battery cable to NEGATIVE(NEG, N, -) battery post.
(This can bea standardautomobilebatterycable available
through your SearsAuto Centeror other auto parts store.)
3. ConnectPOSITIVE(RED)charger clip to POSITIVE:(POS,
P, +) post of battery.
4. Positionyourselfand freeend of cableasfar awayfrom the
battery as possible - then connect NEGATIVE(BLACK)
charger clip to free end of cable.
5. Do not face battery when making final connection. Set
control to desired current 10 or 2 amp.
6. ONLY- After completing steps 1 through 5, insert power
cord to a groundedoutlet of 120 volts, 60 Hz.
7. A marine (boat) batterymust beremovedand charged on
shore. To charge it on boardrequires equipmentspecially
designed for marine use.
PROPERDISCONNECTPROCEDURE
1. ALWAYS unplug the charger power cord before doing
anything else.
2. Thendisconnect the negative(black) lead fromthe end of
the 24 inch cable.
3. Finally, disconnect positive (red) leadfrom battery post.
CHARGEROVERLOADPROTECTION
Your Sears batterychargeris protectedfrom poweroverloadby
two automatic heatsensing switches. One is in the DCoutput
circuit (item 7 on your parts list), the other is built on the
transformer. Thefirst will operatewhena short circuit, reverse
connections, or too long engine cranking overloads the
charger. The protectorwill openwith a click soundand reclose
in a few seconds. The secondprotector will operate when a
prolongedoverloadduetoa defectivebatteryor otherexcessive
loadcausesthe transformer to overheat. It is aonetimedevice
and once it functions the transformer must be replaced.
TIME REQUIREDTO CHARGE
1. A battery is fully chargedwhen:
a. A hydrometer readingof the electrolyteliquid reaches
1.250 or above(all cells shouldhaveapproximatelythe
same reading).
b. The charger rate drops to a very low pulsating rate to
maintain battery charge level. (3-5) hoursfor most 12
volt batteriesor (5-8) hoursfor smaller 12 voltbatteries
at 2 amperes.
2. OVERCHARGINGOFBATTERIESSHOULDBEAVOIDEDAS
MUCH AS POSSIBLE. Overcharging causes excessive
gassing, loss of water, and eventual damageto the bat-
tery. Chargingshould be stoppedif battery becomesvery
warm (over about 125DegreesFahrenheit)or appears to
be bubbling freely.
POSSIBLECHARGINGPROBLEMS
1. Meter needle swings to far right side of meter:
Your new battery charger has been equipped with an
automatic reset circuit breaker. Thisprotects the charger
from temporaryoverloadconditions. A severelydischarged
battery, a battery with shorted cells, or reversedcharger
connectionsat the batterywill causethis protectivedevice
to operate.
Under these overloadconclitions,the circuit breaker will
open, and when cooleddown will reset automatically.
This cycling processcan beidentified bya clicking sound
made during the opening and closing of the circuit
breaker.
a. Check for reverse polarity connections.
b. If battery is severelydischarged, charge meter needle
will start to cycle up and down, and will stabilizeafter
15 to 20 minutes.
c. Battery may have one or more shorted cells. Cycling
will start immediatelyandcontinue indefinitely. If cycl-
ing has not stopped as outlined in (b), disconnect
charger (ACpower cord first) and havebattery tested.
2. No meter reading:
a. Checkconnections to battery and engineblock or car
frame. Be sure polarity is correct (red clip topositive).
"Rock" the clips to bitethrough any dirt or corrosion.
If in a vehicle, be sure terminals on battery areclean
and tight.
b. CheckAC outlet or extensioncord connections.
c. Oneor morecells may be shorted. Thermalswitch in
charger may cycle (click on and off).
MAINTENANCEAND CLEANING
Very little maintenanceis required. As with any appliance or
tool, a few commonsenseruleswill prolongthe life ofyour bat-
tery charger.
ALWAYSBE SURECHARGERIS UNPLUGGEDBEFOREDOING
ANY MAINTENANCEORCLEANING.
1. Store in aclean, dry place.
2. Coil up cordswhen not in use.
3. Cleancaseand cords with a dry or slightly damp cloth.
4. Cleanany corrosion fromclips with a solutionofwater and
baking soda.
5. Examinecords periodically for cracking or other damage.
Have them replaced if necessary.
Page 5
SERVICE
A parts list, assembly drawing, etc. are provided for use by
service personnel.
-- I?
P.o. CAR(] 3UHPER CONNECTION
OETAIL
WHT #4 _L_ _]10Ht
_#1_
WARNING:TO REDUCETHE RISK OF ELECTRIC
SHOCK, DO NOT PERFORMANY SERVICINGOTHERTHAN
THAT CONTAINED IN THE OPERATINGINSTRUCTIONS
UNLESSYOUAREQUALIFIEDTO DO SO.
le
REAR VIEW OF TRANSFORNER
METER CONNECTIONS 2
BACK VIEW
OUTPUT RED
INPUT
120 V
60 HZ
I LIC_Ij SWITCH
i
\
&
REPAIR PARTS
10/2Amp 12 Volt
Battery Charger
MODELNO. 608.718571
Key Part Number Description
1 SD-t22262 Cover
2 SD-30-122599 Case
3 SA-I-128431 Handle
AMP -F
METER
I0_
2A
BL
BROWN
4 SB-135724 Decal
5 ST-91340 Transformer
6 SA-1490528 Meter
7 SA-2-!33344 Thermal Switch
8 ** Rivet
9 SA-l-1320517 Input Cord
10 SA-83986 Output Cord
11 SA-t05350 Strain Relief
12 SA-105598 Strain Relief
13 SB-1-134371B P,C. Assembly
14 SA-128299 Warning Label
15 *STD-551210 No. 10 Lockwasher (3)
16 *STD-541110 No. 10-32 Hex Nut (3)
17 *STD-510605 No. 6-32 x 1/2 Screw
SA-135726 Owner'sManual& PartsList
18 SA-1591008 Switch
19 * 10-32 x 3/8 Screw
**For Replacement Use:
*STD-511103 No.10-32x 3/8 Screw(4)
*STD-541210 No. 10 Lockwasher (2)
*STD-541110 No. 10-32 Hex Nut (4)
*Standard Hardware - may be purchased locally.
Page 6
HOW TO USE YOUR BATTERY CHARGER
1. This charger is for 12 volt batteries.
2.
Make sure battery is in a well-ventilated area.
3.
Do not smoke, strike a match or cause any sparks in the vicinity of
the battery.
4. For a negative grounded vehicle:
a,
Connect RED (+) clip to (+) terminal on battery.
b.
Connect BLACK (-) clip to engine block away from battery.
Do not connect to battery terminal. (A spark near the battery
may cause battery explosion.)
When charging battery out of vehicle:
1) Connect a 24" minimum length of No. 6 gauge insulated
battery cable to negative (-) battery terminal.
2) Connect RED (+) clip to (+) terminal.
3) Connect BLACK (-) clip to jumper cable away from bat-
tery. Do not connect to battery terminal.-(A spark near the
battery may cause battery explosion.)
5. Select desired charging amperage.
IN VEHICLE
OUTOF
VEHICLE
6. Plug the AC (input cord) into a grounded outlet.
7,
Charger Disconnect
a) Disconnect AC (input cord).
b) Remove BLACK(-) clip.
c) Remove RED (+) clip.
10 AMP / 2 AMP 12 VOLT
S _AIRS
AUTOMATIC
BATTERY CHARGER
OWNERS
MANUAL
MODEL NO.
608.718571
Now that you have purchased your battery charger, should a
need ever exist for repair parts or service, simply contact any
Sears Service Center and most Sears, Roebuck and Co. stores.
Be sure to provide all pertinent facts when you call or visit.
The model number of your battery charger will be found on
the front panel.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOL-
LOWING INFORMATION:
° PART NUMBER ° PART DESCRIPTION
° MODEL NUMBER " NAME OF ITEM
C
HOWTOORDER
REPAIRPARTS
Sears, Roebuckand Company,SearsTower,Chicago,IL 60684 A-135726 189
All parts listed may be ordered from any Sears Service Center
and most Sears stores.
If the parts you need are not stocked locally, your order will
be electronically transmitted to a Sears Repair Parts Distri-
bution Center for handling.
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