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Harbor Freight Tools Cen-Tech User Manual

Harbor Freight Tools Cen-Tech
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Page 8 For technical questions, please call 1-888-866-5797. Item 62292
SAFETY OPERATION MAINTENANCESETUP
Preparing to Charge
Use this charger only on flooded lead-acid batteries.
Other batteries may be damaged or may overheat, leak, or catch fire.
TO PREVENT SERIOUS INJURY:
Wear ANSI-approved splash-resistant safety goggles and heavy-duty rubber work gloves
whenever connecting, disconnecting, or working near battery.
Battery acid can cause permanent blindness.
1. If necessary to remove battery from vehicle to
charge, always remove grounded terminal from
battery first. Make sure all accessories in the
vehicle are off, so as not to cause an arc.
2. Be sure area around battery is well ventilated
while battery is being charged.
3. Clean battery terminals. Be careful to keep
corrosion from coming in contact with eyes.
4. Add distilled water in each cell until battery acid
reaches level specified by battery manufacturer.
Do not overfill. For a battery without
removable cell caps, such as valve
regulated lead acid batteries, carefully follow
manufacturer’s recharging instructions.
5. Study all battery manufacturer’s specific precautions
while charging and recommended rates of charge.
6. Determine voltage of battery by referring to vehicle
owner’s manual and make sure it matches output
rating of battery charger. If charger has adjustable
charge rate, charge battery initially at lowest rate.
7. A marine (boat) battery must be removed and
charged on shore. To charge it on board requires
equipment specially designed for marine use.
SHORTED BATTERIES - will read on ammeter as
a high end peg at beginning of charging process.
If after 5-10 minutes, needle does not move off
high end, the battery probably has a short circuit.
Unplug charger and discontinue use.
Have battery checked by a qualified technician.
COLD BATTERIES - begin charging at a low rate,
increase as battery reaches a normal temperature,
then rate will decrease normally.
DO NOT CHARGE A FROZEN BATTERY.
BATTERIES WITH HYDROMETER EYE:
Do not depend on hydrometer eye to
determine battery charge level.
Charger Location
1. Locate charger as far away from
battery as DC cables permit.
2. Never place charger directly above
battery being charged; gases from battery
will corrode and damage charger.
3. Never allow battery acid to drip on charger when
reading electrolyte specific gravity or filling battery.
4. Do not operate charger in a closed-in
area or restrict ventilation in any way.
5. Do not set a battery on top of charger.
TABLE B: CHARGING RATE/TIME
Battery Size / Rating
Charge Rate
Charging Time (based on battery at 50% charge)
2A, 12V 10A, 12V 40A, 12V
Small batteries
(Motorcycle, Garden Tractor, etc.)
6-12 Ah 3~6 hr
Do not use these rates
for small batteries.
Cars / Trucks
200-315 CCA 40-60 RC 13~20 hr 2-1/2~4 hr 1/2~3/4 hr
315-550 CCA 60-85 RC 20~35 hr 4~7 hr 3/4~2 hr
550-875 CCA 85-125 RC 35~55 hr 7~11 hr 2~3 hr
WARNING! TO PREVENT SERIOUS INJURY, FIRE, AND PROPERTY DAMAGE:
Monitor charging during use. This Charger/Starter is not automatic and
can overcharge and damage a battery if allowed to operate for extended periods of time.

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Harbor Freight Tools Cen-Tech Specifications

General IconGeneral
BrandHarbor Freight Tools
ModelCen-Tech
CategoryAutomobile Battery Charger
LanguageEnglish

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