Schumacher ElectricDSR 118 ProSeries Battery Charger and Engine Starter - 125 Amp, 6V/12V, 40A Boost Mode - for Cars, Trucks, and SUVs

Works very well

I've had a glass mat battery on this charger for 6 months while working on the vehicle. So far, so good. It is completely automatic (read Idiot Proof) and has LEDs to show charging/maintaining status. Only downside is that it does not start up again after a power failure, just sits in the "wait" mode until you physically push the Start button. I haven't had to contact Tech Support about this unit yet.

I've had this jumper box for awhile now and you can't beat it for the price and size. It has startered tons of 3/4 ton diesel engines for me and doesn't blink an eye at any gas engine. Battery holds a charge for a very long time. I bring it camping I'm case anyone kills their battery but it's also great for powering air mattress pumps and you can bring it right in the tent.

Excellent charger, better than what you find at the local big box stores. Its powerfull but in a small package.I love the thoughtful cord storage, big well made clamps and cables, and digital screen.Since it does have a boost mode, it should be able to desulfate batteries and being then back, supposedly even if at 0v.Many great functions and modes to control things better than pure automatic chargers.The one I mainly bought it for was the service/boost mode, to maintain my battery during an ecu tune. My german car needs to maintain voltage with the ignition on and this did the trick, kept it at 13.6v as long as I didn't open the door. This is the one downside, the charger would react to the drop in voltage and up the amps, but I never saw it hit 40amps, rather upper 20s and then it would drop back down to 15amps or less, and the voltage would drop. Its too smart for its own good. Would be nice to have a constant 40amps, or at lest be able to maintain 13.6v with any of the doors open, which is often when servicing. Key on, HVAC, stereo, and lights off, it kept 13.6v no problem.So it can be used to hold voltage during ecu programming, with some exceptions.For the price and capability, its hard to beat.

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Purchased on June 2020, used it around 5 times so far, never thought to actually count the uses. :)Buyer beware --- I would suggest look elsewhere. Technical Support Non-existent.Push buttons don't respond reliably sometimes it responds and other times nothing happens. The charger kind of has a mind of its own, you’re not necessarily in controlI purchased to use mostly in the service mode to maintain battery voltages while checking vehicle programing options. It’s a voltage critical task, in fact anytime for whatever reason you put a charger on a vehicle, voltage is very important.Called Technical Support to ask some technical questions, not which button to press.I would like to know what the maximum voltage this charger will put out. Interstate battery technical support says some chargers can harm your vehicle with to high voltages.1st call (I am a patient and a polite caller) they put me on hold because I was having trouble hearing one word. 20 minutes later came back asking what I wanted. I explained I was waiting for and without them saying another word back on hold for another 20 minutes. Finally got the hint they were just trying to get rid of me and I finally hung up.2nd call, after waiting through all the verbal ads again to get to their leave a message & get a call back. Several days later and no call back.3rd call days later, now in voice mail hold, hearing all the same sales ads many times again and 20 minutes has passed and they just dumped the call, never did reach a person.4th call I will just leave a message and hope for the best. Sales ads always come first then I get to pressed 1 for leave a message and the call instantly goes to dead silence and drops off again.So now you to know what I mean when I say Technical support is non-existent and the product also does not work so well. Disappointed

When I was having car electrical issues that the dealer had trouble diagnosing, I purchased this jump starter. When AAA came to start my car, this was the brand he used. It's easy to use and works as promised. After jump starting my car (8 cylinders), the battery indicator light on the unit was still green, indicating that it still had juice left. It gives me piece of mind knowing I have it, instead of just carrying jumper cables and hoping someone helps you out (which someone didn't previously - he said he was busy just sitting in his car idling for 10 minutes). It can come in handy in case someone else needs a jump start. Can't believe I was unaware of jump starters most of my life.

My Camaro battery was dead and I had 1 regular/agm charger and 2 of the newer small type chargers that are supposed to restore completely dead batteries. I use the small ones for trickle chargers mainly. None would charge the dead battery in my 2010 Camaro and battery was only a couple months old. Tester showed under 2%, so I ended up buying this better pro series charger. As soon as I connected pos and neg cable from charger to battery my alarm went off on the car, that's a good sign. Was even able to open trunk and doors with remote. Put the DSR 118 on charging, after about minute, heard click sound and showed charging started. Let charger charge battery for 7 hours and showed 100% and car started. I could have started it with the jump start feature on the DSR 118 but wanted to slower charge the battery. Only odd thing I didn't understand was the charger showed 95% when I was charging and was less than 2%. If it works, is what mattered to me. Jump start feature will come in handy. Will test that on a vehicle that has been sitting over a year. This charger is heavy too, not like a battery, but doesn't feel cheap. The display where you push buttons is only sub par quality I could find, is like a thin flexible plastic and over time could loosen up. Would buy again.

Fácil de usar y cargar la bateria

Very impressed with its performance. Charger a dead batttery within a few hours. Helped with electrolysis to get rid of rust on auto parts. Excellent product.

Tons of power! Worked every time.

It needs to come with a proper manual which is not included.

Value for money