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Schumacher SC-10030A SpeedCharge 2/12-30/100 Amp Automatic Charger and Maintainer

4.1 out of 5 stars 429 customer reviews
| 37 answered questions

List Price: $135.00
Price: $79.50 & FREE Shipping. Details
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  • 100 Amp engine start
  • 2 amp slow and 1230 amp charge rates
  • Charges AGM, deep cycle, gel cell, SLA and standard batteries
  • Charges 6 and 12V batteries
  • Includes Tester/Alternator Check
  • This product cannot be shipped to Oregon or California
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21 new from $79.50 1 used from $63.60
$79.50 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Schumacher SC-10030A SpeedCharge 2/12-30/100 Amp Automatic Charger and Maintainer
  • +
  • Schumacher BT-100 100 amp Battery Load Tester
  • +
  • E-Z Red SP101 Battery Hydrometer
Total price: $115.80
Buy the selected items together

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Product Information

Technical Details

Brand Schumacher
Item Weight 13 pounds
Product Dimensions 12.5 x 10.2 x 5.5 inches
Origin Mexico
Item model number SC-10030A
Manufacturer Part Number SC10030A

Technical Specification

View User's Manual [PDF ]

Additional Information

Customer Reviews
4.1 out of 5 stars 429 customer reviews

4.1 out of 5 stars
Best Sellers Rank #1,452 in Automotive (See top 100)
#31 in Automotive > Tools & Equipment > Jump Starters, Battery Chargers & Portable Power > Battery Chargers
#64 in Automotive > Replacement Parts > Batteries & Accessories
Shipping Weight 12.4 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available May 3, 2006

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Product Description

Product Description

This speedcharge charger has computer control to enhance the charge rate and it also monitors the battery condition to insure that the battery is not overcharged. With this charger, your batteries will be fully charged quicker than with conventional chargers. This charger is designed for use with 6-volt and 12-volt, deep cycle, gel cell and absorbed glass mat batteries.


The Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer with 100-amp Engine Start is a versatile, fast and efficient battery charger/maintainer suitable for use with a variety of 6-volt and 12-volt lead-acid battery types used in everything from tractors, motorcycles, stand-up PWCs and snowmobiles, to those found in cars, trucks, SUVs and RVs. It features fully automatic microprocessor control; automatic multi-stage charging allowing for ease of use; two charge rates: 2-amp and 12<>30-amp; and the ability to choose the type of battery being charged. Additional features include 100-amps of built-in AC powered jumpstarter power, along with battery tester and alternator tester functionality.

Front side view of the Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer
Charge and maintain multiple battery types at 2 Amp levels.
View larger.

Faster, Smarter and Safer 6-Volt and 12-Volt Charging

By combining conventional battery charging technology with state-of-the-art circuitry, the Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer offers versatility, speed of charging and convenience rarely seen in a battery charger. The charger features an easy-to-use and monitor touchpad on which two output current rates are selectable: 2-amp and 12<>30-amp. The touchpad also allows for the selection of battery type being charged: 12-volt regular automotive, 12-volt deep-cycle, 12-volt AGM or gel cell and 6-volt regular batteries; and provides data percentages of a full charge that is stored. All these features and data are heightened by the prescence of a powerful microprocessor at the heart of the unit.

The Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer shown charging a motorcycle battery
Retractable handle & stowage area.
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Graphic explaining multi-stage charging
Efficient multi-stage charging safely keeps batteries at optimal levels.
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Estimated charge times using the The Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer
Fast charging speeds across a variety of battery types.
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The microprocessor of the Schumacher SC-10030A SpeedCharge Automatic Charger and Maintainer monitors the attached battery's voltage level from the moment it is connected, using this ever-changing data to improve the charging system's multi-stage charging cycle. Multi-stage charging allows a battery charger to automatically cycle, between a variety of charging phases including desulfation, bulk charging, absorption, monitoring, float mode and a minimal drip charge maintain mode when a connected battery again falls below a certain set level. The microprocessor collected data is especially important in this cycle in that with it the SC-10030A can more accurately measure the charging needs of a connected battery, resulting in quicker charge times and a lessened chance of damage due to overcharging.

2-Amp and 12<>30-Amp Charging Rates

An additional key to the speed with which the Schumacher SC-10030A SpeedCharge Automatic Charger and Maintainer works is its 2 available charging rates: 2-amp and 12<>30-amp. By allowing users to choose the best rate for the right battery type and charging needed the SC-10030A is better able to supply exactly the right level of charge, at the right time in the charging cycle to get quick results and maintain connected batteries at theie proper levels. Details on the three available charging rates include:

  • 12<>30-amp Fast Charge – Self-adjusting, variable charge rates for everyday charging needs and maintaining your battery in peak condition. Charges and automatically desulfates and restores car, truck, RV, farm equipment, AGM, gel cell and deep-cycle batteries.
  • 2-amp Slow Charge – A gentle trickle charge for charging and maintaining small batteries; charges motorcycle, ATV, snowmobile and lawn tractor batteries.

Valuable Additional Features

In addition to serving as a battery charger the Schumacher SC-10030A also contains several automotive diagnostic tools that come in handy in any garage. These include: an AC powered battery jumpstarter, a built-in battery tester and an built-in alternator tester.

An AC Powered Jumpstarter

Your Schumacher SC-10030A battery charger can be used to jump start your vehicle using the built-in "engine start" feature if the battery is low. This feature is capable of delivering up to 100-amps of jumpstarting power via your household AC current.

A Built-In Battery Tester

Schumacher SC-10030A battery charger has a built-in battery tester that displays either an accurate battery voltage or an estimate of the battery’s relative charge based on the battery voltage and the Battery Council International scale.

Built-In Alternator Tester

Th built-in alternator tester displays either an accurate alternator voltage or an estimate of the alternator's relative output compared to normal alternators. The Alternator % values displayed should be taken as general reference, not precise diagnosis.


  • Charger Type - Fully automatic microprocessor controlled
  • Output Voltage - 6V/12VDC, 3.6V/7.2VDC
  • Input Voltage - 120 VAC
  • Output Current Cont: 2A
  • Output Current Int: 12A/30A
  • Output Wattage - 280W
  • Output Engine Start - 100A
  • Intput Current Int: 3.5A/7.0A
  • Input Engine Start - 18.4A
  • Dimensions - 5.37" H x 9.80" W x 9.00" D
  • Product Weight - 14.65 lbs.
  • RoHS Compliant - Yes
  • Retractable Carrying Handle - Yes, with back cord wrap

What's in the Box

  • Schumacher SC-10030A SpeedCharge Battery Charger/Maintainer, with 125-amp, sure-grip battery clamps
  • Two cord wrap cleats for rear storage of clamp cables
  • User manual and warranty information (English and Spanish)

Five-Year Limited Warranty

Schumacher Electric Corporation (the "Manufacturer") warrants this battery charger / maintainer for five (5) years from the date of purchase at retail against defective material or workmanship that may occur under normal use and care. If your unit is not free from defective material or workmanship, Manufacturer’s obligation under this warranty is solely to repair or replace your product with a new or reconditioned unit at the option of the Manufacturer. It is the obligation of the purchaser to forward the unit, along with proof of purchase and mailing charges prepaid to the Manufacturer or its authorized representatives in order for repair or replacement to occur.

About Schumacher Electric Corporation

Since 1947, Schumacher Electric Corporation has been leading change and driving performance to exceed its customers' expectations. Engineered patent pending technologies and award winning marketing allows Schumacher to be the brand of choice when it comes to portable power and battery charger/jump starter/maintainer/tester needs. Passion and commitment is the Schumacher way which shows, as they are NASCAR's official supplier for chargers, jump starters, and inverters.

Customer Reviews

Top Customer Reviews

Verified Purchase
I had another electronic style charger, purchased a few years ago from Sam's Club. Not bad, just not durable and it gave up the ghost...

I was referred to Schumacher by some friends in the auto repair business and wanted a unit that was reliable and was versatile, charging different types and sizes of batteries. We have a vehicle and a motorcycle that doesn't get used regularaly and I needed to be able to top off various batteries.

1st impressions, this thing is HEAVY compared to other brands! Not a big surprise since I have to assume they use a more robust transformer than other brands.

On the flip side, the battery leads are lighter and smaller than I would have expected. They work great and since Schumacher has been doing this for quite a few decades, I'm sure they will work well for the long haul- I just expected larger gauge wires and larger clips. As a plus, the smaller clips actually are easier to connect to various batteries, especially if they are still installed (motorcycle).

Other surprise is this thing is loud, with a constant hum when plugged in. It is normal based on the transformer, but it is different than the cheaper chargers out there. This is not a bad thing, just a little different.

I have already used this charger on a truck battery and a couple smaller batteries with no problems. It works as advertised and quickly. I like the fact that it will automatically charge then shift to a float charge mode and includes a desulfide mode if needed. Since some of my stuff sits (bike and lawn mower) the desulfide function is great to recover a battery. Haven't tested the start function and likely won't but it's there if needed...

Overall, pleased and would buy again.
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Verified Purchase
Have a diesel truck that is setting most all the time. Over a long period of time the alarm system and other gadgets drained the battery. Was probably this way for many weeks. Not good for a battery at all. This truck has a diesel that requires two batteries to start. After recharging the batteries many times with another non-automatic charger and a smaller version of this charger, they would not take a full charge and trip out the smaller charger/maintainer. This charger, Schumacher SC-10030A SpeedCharge Automatic Charger and Maintainer, has a de-sulfation mode for batteries that suffer this type of trauma. Over night, about 12-14 hours later the battery finally accepted a full charge. I verified this by using the same smaller maintenance/ maintainer battery charger that continually tripped out. Once I had a fully charged battery, I installed the smaller maintainer, and it turned green indicating a full charge and now maintains the batteries..

Two problems. 1) this charger in my opinion is too large to be a maintainer / conditioner. It does the job but has a fan that goes on and off. Probably uses too much electricity. 2) When ever the charger goes into maintain mode, it sets off my remote controlled alarm system on the truck. I had to put the truck alarm on valet to prevent this.

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I purchased a DieHard 71227 (80amp start, 30/12/2 amp charge) to charge a 6v deep cycle RV battery (186 amp hr). My intention was not to charge a dead battery, but to charge my > 50% charged RV batteries individually to equalize them. The battery had about 65% in it according to the charger. After a few hours the charger hit 77% and shut off and will not turn back on.

I returned the DieHard 71227 and purchased the Schumacher SC-10030A. It has slighly better specs 100amp start, 12<>30,2amp charge. I began by topping off the battery that the DieHard died on. I then let the charger cool down for 30 minutes (fan blowing on it). Then I began charging the 2nd RV battery. It started at 60% and ran until it hit 74% (a couple hours). Same thing happened... charger shut off... will not turn back on. I discovered that Schumacher built both of these chargers... they look VERY similiar inside.

What I cannot believe is that Schumacher is not putting a thermal switch in these chargers to prevent a melt down. Also makes me wonder if the Starter Mode on these chargers will cause the same melt down. Starter Mode says it runs for 5 seconds and then cools down for 180 seconds... obviously they are using a timer and not a thermal switch. So I imagine if you use the Starter Mode a couple times you will probably have the same melt down issue.

So I have gone thru 2 chargers in less than 6 hours of charging. I think the 'old' manual Schumacher chargers are ok, but the new microprocessor chargers appear to be junk.
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This charger behaves erratically and could damage batteries. I tested it on 2 brand new 12 V deep cycle AGM batteries on its AGM setting. The charging voltage would jump up to like 15.5V after 90% and just stayed there forever. I had to intervene and shut if off myself. For a proper charging sequence, when the battery is nearly full, a good charger should go to the float mode and drop the voltage accordingly to only 13.5V or so, not raise it up to above 15V! This over-voltage is especially detrimental to sealed batteries such as AGM. Even for flooded cells, it is not a good thing. By the way, I tested it on a brand new flooded cell on its standard setting and it was doing the same thing.

I also monitored the charging current with a clamp meter and saw that the charging current would suddenly jump up to 30A from times to times unnecessarily. When it was at 30A, the jumper cables got quite hot to the touch fast and felt like the plastic around the wire may melt. I get a sense that this charger is not capable of continuously varying charging current and the charging algorithm is poorly designed.

At several occasions, it would just be stuck at a particular charge percent and not move at all. When I disconnected it from the battery and reconnected it again, it would show a totally different percent charge reading.

One good thing is the fan does not come on all the time and is not very loud. I can't believe such a name brand company could sell such a dangerous and sub-par charger at such a high price. I bought this charger at Pep Boys and needless to say, returned it after a week of testing. I submitted this review to Pep Boy's website and got rejected. So, beware of the reviews at Pep Boys, folks.
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Schumacher SC-10030A SpeedCharge 2/12-30/100 Amp Automatic Charger and Maintainer
This item: Schumacher SC-10030A SpeedCharge 2/12-30/100 Amp Automatic Charger and Maintainer
Price: $79.50
Ships from and sold by Amazon.com