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CAUTION: A SPARK NEAR THE BATTERY MAY CAUSE
BATTERY EXPLOSION. TO REDUCE RISK OF A
SPARK NEAR BATTERY:

1. Check polarity of battery posts. POSITIVE (POS, P,+)

battery post usually has a larger diameter than
NEGATIVE (NEG, N,–) post.

2. Attach a cable (not provided) to the NEGATIVE (NEG,

N, –) battery post. This cable must be a minimum of
24” long, and of a wire gauge that is no lighter than
the wire gauge of the charger’s output cables (battery
cables and booster cables work well).

3. Connect POSITIVE (RED) charger clip to POSITIVE

(POS, P, +) post of battery.

4. Position yourself and the free end of the cable

(installed in step #2) as FAR away from the battery as
possible. FACING AWAY FROM THE BATTERY,
connect the NEGATIVE (Black) charger clip to the free
end of the cable.

5. When disconnecting charger, always do so in reverse

sequence of connecting procedure and break first
connection while as far away from battery as practical.

4. Determine which post 

of battery is grounded
(connected) to the
chassis. If the negative
post is grounded to the
chassis (as in most
vehicles), see Figure 1
and instruction 5a. If
the positive post is
grounded to the
chassis, see Figure 2
and instruction 5b.

5a. For NEGATIVE

GROUNDED vehicle,
connect POSITIVE (Red) clip from the battery charger
to the POSITIVE (POS, P,+) ungrounded post of the
battery. 

5b. For POSITIVE GROUNDED vehicle, connect the

NEGATIVE (Black) clip from the battery charger to the
NEGATIVE (NEG, N, –) ungrounded post of the battery.

6. Connect the remaining

battery charger clip to the
vehicle chassis or engine
block, as far away from
the battery as possible.
Do not connect the
clip to carburetor, fuel
lines, or sheet metal
body parts. Connect
to a heavy gauge
metal part of the frame
or engine block.

7. When disconnecting

charger, turn all switches
with an OFF position to off, disconnect ac cord,
remove clip from vehicle chassis, and then remove
clip from battery terminal.

8. Refer to the Operating Instructions for information on

setting selector switches. Be sure to refer to the
instructions for your model of charger.

Negative to

Chassis Ground

Positive

Positive to

Chassis Ground

Negative

Figure 2

Figure 1

NOTE: Not applicable to Model 87102, 87104, and 87122.

1. Connect the battery charger to the vehicle according

to sections G or H (as appropriate) found earlier in this
manual.

2. Follow the Operating Instructions for the model of

charger you are using in setting the output switches.
NOTE: Performance will be enhanced if you charge
the battery for 10–20 minutes before attempting to
start.

3. Crank engine for 3 to 4 seconds.

4. If engine fails to start, charge battery for another

10–20 minutes and attempt to start the engine again. 

NOTE: This charger is equipped with an automatic reset
circuit breaker to protect the battery charger from overload
conditions. This circuit breaker will trip if you crank the
engine too long at one time. If this happens, wait six to
seven minutes. The breaker will reset automatically and
engine starting or battery charging can resume.

CAUTION: BATTERY MUST BE INSTALLED IN
VEHICLE TO USE THE ENGINE STARTING FEATURE.

3

+

_

Cable

from

Charger

Cable from

Charger

Positive

Booster

Cable

Negative

Figure 3

E

n
g

l
i

s

h

CHARGING A BATTERY OUTSIDE OF THE VEHICLE

H

ENGINE STARTING

I

Summary of Contents for 87102

Page 1: ...tenance or cleaning Turning off controls will not reduce this risk 10 Monitor battery charger daily when using it to maintain battery for extended periods automatic models only 11 WARNING RISK OF EXPLOSIVE GASES a Working in vicinity of a lead acid battery is dangerous Batteries generate explosive gases dur ing normal battery operation For this reason it is of utmost importance that each time befo...

Page 2: ...etting any switches with an OFF position to off and removing ac power cord from electric outlet Never allow clips to touch each other 2 When hooking up charger attach one clip to battery and the other to a point away from battery see sections G H Do not hook up charger until reading sections A J To reduce explosion risk never connect both clips directly to the battery When making each connection t...

Page 3: ...or engine block as far away from the battery as possible Do not connect the clip to carburetor fuel lines or sheet metal body parts Connect to a heavy gauge metal part of the frame or engine block 7 When disconnecting charger turn all switches with an OFF position to off disconnect ac cord remove clip from vehicle chassis and then remove clip from battery terminal 8 Refer to the Operating Instruct...

Page 4: ...roper connections to the battery as explained in sections F through H Step 2 Select Setting Select the 10 A 12 V AUTO position if you are charging large lead acid batteries such as those used in automobiles boats trucks vans farm equipment etc Plug the ac power cord into the wall outlet The meter will read up to 15 amps and taper down to 0 or 1 as the battery reaches full charge When the battery i...

Page 5: ...eak battery 12V only Plug the ac power cord into the wall outlet Note For best results charge the battery first for 10 20 minutes using the 10 A 12 V position before attempting to start the vehicle in the 55 AMP START position Engage the starter for 3 4 seconds if engine fails to start charge the battery using the 10 A 12 V position for another 10 20 minutes and attempt to start the engine again B...

Page 6: ...he battery charge level drops the charger will begin charging again Note If the charger does not sense a minimum voltage condition because of a deeply discharged battery then preactivation of the battery is required The meter will read zero or near zero Step 1 Make Connections Make sure ac power cord is unplugged from wall outlet Make proper connections to the battery as explained in sections F th...

Page 7: ... When the battery is fully charged the charge complete light will come on the meter will drop to 0 amps and the charger will automatically stop charging Select the 12 A 6 V position for charging 6 volt batteries Plug the ac power cord into the wall outlet This setting does not taper and does not shut off automatically Note Do not use this battery charger to charge batteries larger than those typic...

Page 8: ...pproaches full charge Refer to Section L Time to Charge to determine how long to charge your battery Step 1 Make Connections Make sure ac power cord is unplugged from wall outlet Make proper connections to the battery as explained in sections F through H Step 2 Select Setting Select the 100 AMP START position if you are attempting to start a car with a weak battery 12V only Plug the ac power cord ...

Page 9: ...atteries will not allow the charger to shut off automatically Select the 15 A 6 V position for charging 6 volt batteries used in automobiles trucks and farm equipment Plug the ac power cord into the wall outlet This setting does not taper and does not shut off automatically Note Do not use this battery charger to charge batteries larger than those typically found in boats passenger cars or light t...

Page 10: ...olt 10 amp setting Batteries with a partial charge smaller batteries and chargers with a higher amperage output such as 12 or 15 amps will take even less time to charge If the meter shows that the battery is drawing amperage from 7 15 amps and after charging for up to eight hours the battery still isn t fully charged have the battery professionally tested or replaced On battery chargers equipped w...

Page 11: ...comes on the battery IS fully charged However due to electrolyte stratification the hydrometer eye in the battery may not immediately indicate full charge To get the eye to register full charge set the SELECT FUNCTION switch to START and charge for one more hour on the 10 12 or 15 amp setting MODELS 87106 87121 87122 87128 87151 MODELS 87102 87104 87105 87120 87150 87302 1 NO AMMETER READING Ξ Mak...

Page 12: ...EAR FROM DATE OF PURCHASE ALL RISK OF LOSS FROM WHATEVER REASON SHALL BE PUT UPON THE PURCHASER Lincoln Electric SHALL NOT BE LIABLE FOR INCIDENTAL AND CONSEQUENTIAL DAMAGES UNDER ANY CIRCUMSTANCES Lincoln Electric S LIABILITY IF ANY SHALL NEVER EXCEED THE PURCHASE PRICE OF THIS MACHINE REGARDLESS OF WHETHER LIABILITY IS PREDICTED UPON BREACH OF WARRANTY EXPRESS OR IMPLIED NEGLIGENCE STRICT TORT O...

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