Schumacher SE-520MA 10/2 Fully Automatic Dual-Rate Chrager with LEDs

I bought this little feller to replace an 40 amp converter that expired. I use it to maintain an auxiliary battery in my camping van; the converter was overkill.

The SE is a different shape than the converter but fit. It has been doing its thing for a couple of years with no problems as has the battery. It runs 24/7 except when we are driving. In campsite, it is across the battery that the TV uses and I get no noise from it; the converter gave me a low hum.

Should have bought it the first time.

As soon as we received the charger we found the battery of our CRV dead because we had accidently turned on the cargo light while unloading stuff. It was wonderful to see our battery being recharged and so quickly. Just love Amazon for offering quality merchandise with fast shipping at prices far below the local discount automotive places!

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The build quality is very poor. Can you imagine the nice-looking front panel is actually a piece of PAPER loosely (you can lift it up and see the back) attached to a metal plate, which is also loosely attached to the rest of the box? Worst, the one I got did not charge, and with a multimeter I found the output voltage is only 8.7 volt. I sent it back immediately.

I purchased it because of the previous two five star reviews, so I don't want other people to fall into the same trap. You have been warned.

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Completely satisfied. I always have liked Schumacher products. I highly recommend this product. I like everything about it. I found the best prices right here on Amazon.com.

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I use this for charging my RV batteries when running my generator. I have had poor results using the built-in battery charger for my older model RV. From research it appears the older charging units do not charge the batteries adequately unless charged for a very long time if ever. I have my RV permanently 'way out there' and needed a quicker charger when running my generator. I have had to replace batteries prematurely as a result. I installed this charger by plugging into a receptacle in the RV and semi-permanently hooked it to my batteries and disconnected the old charger. Whenever I start the gererator I get a 10 amp rapid charge and an automatic charge reduction as the battery approaches full charge. My battery does not overcharge and boil off battery fluid because of the automatic feature. I have been very pleased by how quickly the batteries are charged compared to the built-in charger. Three stars because the wires on the charger get very warm with the 10 amp charge and there is no 'on' or 'off' switch, which I dislike as the unit must be unplugged while charging unless the generator is shut down. I can switch to and use the 2 amp feature and quickly disconnect the charger for use on ATV's, motorcycles, trickle charging, etc. I recently started using solar panels and only need to use the 2 amp charging rate and generator to keep the batteries at full charge after excessive use of electricity.

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