Will this charge a completely dead battery?

Yes, the SC1309 will charge a completely dead battery, unless the battery is bad. If you are using the engine start feature, we recommend first using the boost mode to quickly add energy to the battery.

Does this unit have internal batteries or is it powered by AC?

The SC1309 does not have an internal battery. It must be plugged into any AC outlet before charging will start.

Will the SC1309 desulfate a battery?

Yes, the SC1309 has an automatic desulfation mode. If the battery requires desulfation, the unit will automatically switch to desulfation during charging. Desulfation can take up to 10 hours.

Why did my charger turn off and then back on?

The charger detected that the battery may be getting too hot, known as thermal runaway. Allow the battery to cool. If it continues, have your battery checked. It may need to be replaced.

Can this unit be used with an extension cord?

The use of an extension cord is not recommended. If you must use an extension cord, the pins on the extension cord plug should match the pins on the SC1309’s plug and the wire gauge must be large enough for the AC ampere rating of the charger.

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Schumacher Electric Wheeled Automatic 6A Car Battery Charger and 200A Engine Starter, 6-in-1 Solution, Maintainer, 40A Boost, for 6V/12V Power Sport, Automotive, and Marine Batteries, SC1309

Product ID: 54078989

Details

Brand
Schumacher
Color
Black
Item Weight
29.75 Pounds
Output Voltage
12 Volts (DC)
Product Dimensions
11.25"D x x

⚡200A engine start power

🔋6-in-1 battery care system

🛞wheeled mobility & durability

Description

⚡ Charge, Start, Maintain — The Ultimate Power Play for Your Garage

SMART TRICKLE CHARGING - Safely maintain 6V/12V batteries long-term without overcharge anxiety.
ALL IN ONE 6 IN 1 SOLUTION - Charge, maintain, test, recondition batteries & alternators—your garage’s ultimate multitasker.
POWERFUL 200 A ENGINE START - Instantly jump-start gas & diesel vehicles with robust 200-amp surge power.
WIDE VEHICLE COMPATIBILITY - From motorcycles to marine engines, supports standard, AGM & deep-cycle batteries effortlessly.
BUILT IN DIAGNOSTICS SAFETY - Integrated battery/alternator tester plus reverse polarity protection for foolproof operation.

The Schumacher SC1309 is a rugged, wheeled 6-in-1 battery charger and 200A engine starter designed for professional-grade automotive, powersport, and marine battery care. It delivers powerful 200-amp engine starts, 40-amp boost charging, and smart trickle maintenance for 6V and 12V batteries. Featuring built-in battery and alternator diagnostics, reverse polarity protection, and wide compatibility with gas and diesel vehicles, this AC-powered unit combines mobility, durability, and advanced battery reconditioning technology to keep your vehicles ready and reliable.

Specifications

ASIN	B0756MDZ1F
Amperage	200 Amps
Battery Charge Time	28.8 minutes
Best Sellers Rank	#30,694 in Automotive ( See Top 100 in Automotive ) #159 in Battery Chargers
Brand	Schumacher Electric
Built-In Media	Schumacher SC1309 2/6/40/200A 6V/12V DOE Battery Charger and Maintainer
Color	Black
Compatible Devices	Vehicles (cars, trucks, motorcycles, ATVs, marine vehicles)
Current Rating	200 Amps
Customer Reviews	4.4 out of 5 stars 2,861 Reviews
Global Trade Identification Number	00026666813099
Input Voltage	120 Volts
Item Dimensions D x W x H	11.25"D x 9.75"W x 33.38"H
Item Type Name	6/12V Wheeled Automatic Battery Charger and 40/200A Engine Starter with Advanced Diagnostic Testing
Item Weight	29.75 Pounds
Manufacturer	Schumacher Electric
Mfr Part Number	SC1309
Model Number	SC1309
Output Voltage	12 Volts (DC)
Product Dimensions	11.25"D x 9.75"W x 33.38"H
Specification Met	CEC
UPC	026666813099
Unit Count	1.0 Count
Warranty Description	1 Year

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