Filter
Top Products
SKU 90893 Page 4
6. Reversing Battery Tester Cable Clamps on the battery will damage the tester.
7. Do not connect the Battery Tester to the battery while the battery is being charged.
Turn the engine off before connecting.
8. Do not touch the cooling vents on the Battery Tester immediately after testing
the battery. They become very hot.
UNPACKING
When unpacking, check to make sure that all the parts are included.
Refer to the Assembly Diagram, Below.
If any parts are missing or broken, please call Harbor Freight Tools
at the number on the cover of this manual as soon as possible.
OPERATING INSTRUCTIONS
Testing the Battery
Undercharged lead-acid batteries will freeze during cold weather.
NEVER TEST OR CHARGE A FROZEN BATTERY.
1. To help ensure a good connection, clean battery terminals with a solution of
baking soda and water, and wipe the battery terminals with a cloth to remove
any dirt and grease.
2. Connect the red (positive) Cable Clamp (A) to the positive terminal (+) on the 6
or 12 V lead-acid battery. (See photo above.)
3. Connect the black (negative) Cable Clamp (B) to the negative terminal (–) on the
battery. Turn clamps slightly to ensure a good connection.
4. With the clamps connected, the tester’s gauge will show the battery’s current
charge. If it is less than 12 V on a 12 V battery (or 6 V on a 6 V battery),
disconnect the battery and recharge before testing. If recharging will not bring
the reading above the appropriate voltage (noted above), the battery is defective.
If it shows no reading, verify that the tester is connected properly. If the tester
is connected properly, the battery is defective.
(A)
(B)
(C)
(D)