|Item Weight||11.9 pounds|
|Product Dimensions||12 x 6 x 10 inches|
|Item model number||SC-8000A|
|Discontinued by manufacturer||Yes|
|Manufacturer Part Number||SC8000A|
Schumacher SC-8000A Speedcharge Charger/Maintainer
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- 30-amp rapid charge and 12-amp fast charge features self adjustment and adjusts charge rate to prevent battery damage
- Compatible with virtually every type of automotive or light marine battery
- 80-amp engine start provides quick power to crank the engine
- 2-amp slow charge for small batteries and large battery maintenance
- 100-amp clamps for top and side-mounted battery posts
- This product cannot be shipped to Oregon or California
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Top Customer Reviews
I observed that the voltage was generally limited to 15.5 for regular, 16.0 for deep cycle, and 14.7 for AGM batteries. The 30 amp capability is in the form of a long timed pulse of about 2 minutes followed by 12 amps for a similar time period, then repeating until the voltage has risen enough that it isn't required. The amperage isn't constant, it tapers down to limit the voltage in typical CC/CV fashion, although the algorithm appears to actually be more complex. For instance, on a particular AGM battery it went to 15.5 volts near the end of the charge (95%) with current at about 1.5 amps for about 30 minutes and then stopped (completed). I suspect that this was an automatic attempt to condition the battery. A DieHard 71227 charger (Schumacher makes the DieHard 71227 charger) did the same thing. After three discharge cycles, it stoped doing the "high-voltage treatment". Also, in AGM mode it went to 15.5 volts briefly during one of the 40 amp cycles. Although the instructions for DieHard Platinum and Odyssey batteries say to choose a charger with <14.8 volts, this charger was obviously designed with these batteries in mind.
Two small negative notes. If a battery has voltage close to zero, the safety features won't let it operate. Also, if the AC power cycles, it will come back on as a charger set for 2 amps in regular battery mode after 15 minutes. I wouldn't recommend leaving an AGM battery connected in maintenance mode. It's odd that the charger doesn't store the last used settings in the microprocessor's eeprom, or just use battery power to keep the processor running.
Overall, it's a nice charger. I hope some of the tech info above helps.
I have had various 12v battery chargers. The ones that I have usually bought were trickle charge types. My first one did not have a sensor and I blame that for killing a 1 year old garden tractor battery. My second unit that I bought for $30 or so had a sensor to avoid overcharging. It lasted 10-15 years but it started to have problems. It just seems to stopped charging altogether when its 'trouble' light came on. It started becoming frustrating when all my automotive batteries started to die about the same time and the charge just did not work. Thank the lord that I now have what appears to be a really good unit.
So far I have successfully used the Schumacher SC-8000A to trickle charge my garden tractor battery, jump start my car, rapid charge my diesel truck (which as diesel owners know, has two batteries), and rapid charge an auxiliary battery (an Optima YellowTop). I did try to jump start my diesel truck and it did not work. I only tried to crank it once and I wasn't sure that it would work. Once you crank it, the unit prevents you from trying again for several minutes. I was not in a hurry so I rapid charged it myself. So far I am satisfied. I am hoping that it continues to work well and lasts a long time. Time will only tell.
Most Recent Customer Reviews
This has been very helpful with cars, lawn tractors, etc. Has held up nicely over the years.Published 18 months ago by Freedom1789
Very inconsistent in charge or not charge - the charger seems to have a mind of it's own. Shuts off for no reason and gives us a blinking signal. Read morePublished 23 months ago by Amazon Customer
The first charger I purchased from Amazon is used; however after using it twice in quick working, and the company refused to repair. Read morePublished on January 11, 2014 by B. Walther
Would order again. This seems to work effectively and gives a good charge, easy to read display and lasts a long time.Published on January 7, 2014 by Allen Patrick Williams
Does not pass the 3' drop test like the metal ones do, yes i do drop things occasionally.cooling fan vibrates loudly even after opening up to repair. Read morePublished on August 30, 2013 by ras
Best charger I've ever owned. Easy to use. I read the reviews
before I made the purchase and this helped me decide to buy this
product. I give it 5 stars.
As this is the first battery charger/maintainer I ever owned, I am not sure what to expect. I bought it to maintain my battery while I'm away for a couple of weeks or more. Read morePublished on March 14, 2011 by E. Goisman