Schumacher SE-1275A Automatic Onboard Battery Charger

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Schumacher SE-1275A Automatic Onboard Battery Charger
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Product Description

This automatic onboard battery charger is a high output portable charger, is completely automatic, and great for professional mechanics as they can be used for deep cycle batteries. Its 75-amps helps engines for emergency starting and the 12-amp fast charge helps to charge a battery in 2-5 hours. The 2-amp trickle charge charges a small 12-volt battery in 2-12 hours. It includes 2 LEDs which light up when the battery is fully charged and a 6 function rotary switch prevents overcharging of batteries.

Product Details

  • Amazon Sales Rank: #8383 in Automotive
  • Color: Black
  • Brand: Schumacher
  • Model: SE-1275A
  • Dimensions: 10.00" h x 11.00" w x 5.00" l, 12.50 pounds


  • A 6 function rotary switch prevents overcharging
  • Made for 12V batteries
  • 75-amps help emergency engine starting
  • 12-amp fast charge charges batteries in 2-5 hrs; 2-amp trickle charger charges batteries in 2-12 hrs
  • 2 LED lights display charge status

Customer Reviews

Most helpful customer reviews

23 of 23 people found the following review helpful.
5A Robust and Efficient Battery Charger
By Texas Sutherland
I'm impressed by this product. I've used other battery chargers before but the SE-1275A is the best ever. The things I like best are: Wide-mouthed alligator clips that clamp on easily and don't slip off, automatic shutoff when a battery is fully charged, the rugged steel cabinet and overall quality construction.

If I could change anything about it, I would suggest adding readable instructions to the back of the cabinet, a longer electrical supply cord (one or two extra feet would be perfect), and a larger analog meter.

13 of 14 people found the following review helpful.
4Good product, bad customer service
By Tech
Well Made. Does what it's supposed to.Customer service is non existent !
You get an answering machine, and never receive a return call, ever !

The Documents leave out MANY ways that this item will respond to charge levels and charge cycles of various batteries, so it's off to the internet or trial and error if your unit does something that you don't understand. One of the tricks to this charger is to start out on 2 amp for about an hour, then raise up to 15 amp. When the charger reads full charge at 15 amps, drop to 2 amp and top the battery off for a full charge. It will take about 6 hours to charge a depleted battery.

The jump start barely started my car,but it did the trick,and it's a very hard to start car that sometimes won't jumpstart, so I was impressed.
It helps to charge a very dead battery for about 15 minutes before you jump start it with this unit.

For the price, everyone should own one of these. It's a great product, who's only MAJOR FLAW is the embarrassing lack of customer service. Schumacher Management should be ashamed of themselves.

14 of 16 people found the following review helpful.
5Top Quality
By Lafayette H. Bunnell
Heavy - steel and copper. Thats what counts in a charger and this one has both. Don't buy the lightweights from China. Made in Mexico, but its an old standby US design.

OKAY its a year later... this one died early on - they sent a new one after I retutned the bad one. That one died too. They quickly sent another without any return needed, and the rep sounded like he was Po'd at his company for allowing so much junk to go out the door. Now I have two working and one dead for spare parts, and even after the hassle these are still the most for the least on the market. You only other option is sears, and they appear to be made by Schumaker also, or harbor freight which should send its electric stuff with a death certificate.