Schumacher SE-1052 User Instructionsby Gus Stephens
Schumacher's SE-1052 is a hand-held automobile battery charger/starter. In two amp manual trickle charge mode, it can charge a 12-volt auto battery in 12 hours or less. The manual 10 amp fast charge mode will charge a 12-volt auto battery in three to five hours. The 50 amp engine start will jump start a dead battery in an emergency. The charger features solid state circuitry, a thermal breaker and a three-function charging switch. The power cord for the SE-1052 is six feet long and the battery charging cables with clamps also are six feet long.
Set the "Charge Rate" selector switch to two amp trickle mode or 10 amp fast charge mode.
Attach the charger cables to the battery, following correct polarity: Red cable to the positive battery terminal and black cable to the negative battery terminal.
Plug the charger power cord into an AC wall outlet.
Monitor the charging process by checking the ammeter on the front panel. Terminate charging when the ammeter reaches 100 percent on the "Charge %" scale. Do not overcharge the battery.
Engine Start Mode
Unplug the charger from the AC outlet.
Connect the charger cables to the battery, observing correct polarity: Red cable to the positive battery terminal, black cable to the negative battery terminal.
Plug the charger into an AC outlet. Set the charge rate selector switch to "Engine Start."
Start the engine. If it does not start in five seconds, stop cranking and wait four minutes before cranking again. If it fails to start after the second attempt, charge the battery for five minutes before attempting to start the engine again.
Unplug the power cord from the AC outlet before disconnecting the charger cables after the engine starts.
Gus Stephens has written about aviation, automotive and home technology for 15 years. His articles have appeared in major print outlets such as "Popular Mechanics" and "Invention & Technology." Along the way, Gus earned a Bachelor of Arts in communications. If it flies, drives or just sits on your desk and blinks, he's probably fixed it.