Save A Battery 2365-48 48-Volt Battery Charger and Maintainer

• 48-Volt, 50-Watt unit charges and maintains batteries with fast-acting pulsing technology
• Extends battery life the longer it is plugged in
• Safe to use, with over-current, over-voltage, short-circuit and reverse polarity protection
• Unique modular cable design offers a variety of connectors and lengths, and can be changed quickly and easily
• Lightweight, compact and easy to transport

hard to find a 48v charger and maintainer. recharges my 4 battery system great. great value and works as advetised

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I used this 48v charger for my ebike for over a year without any incident. It renewed my packs that I would reclaim from a recycling barrel and was easy to stash in a pack for transport.

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It has maintained my 48v SLA system for my eBike for 6 months, support is solid, fast, and friendly. I cannot recommend this product strongly enough.

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Surprised how well this battery pulsing technology works. Brought back my battery from a situation where it would be empty after 2-3 days, to where it steadily holds a charge on its own now.

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It doesn't work. I tried this on the battery that I was trying to revive. I followed the directions. I first plugged it into an AC outlet. The status lights came on, so it looked like it was working. Made the connections correctly, and all the lights just go out. The instructions say the 'battery' light should stay on, and the 'status' light is supposed to flash while charging. So I thought that maybe it just needs the battery to be juiced a little to get it charging so I get the car started, run it for awhile, shut it down and tried the charger again. Same thing--nothing. And nothing wrong with the car's charging system. So I tried it on my other car that has a good battery to see if it recognizes the battery and shows float charging. It didn't. This time, just the 'battery' light flashes, and my interior dome light starts flashing. Go figure. Also, the product description claims no sparking . Wrong, this thing sparks like crazy when connecting/disconnecting. And they charge 90 bucks for this charger? It will be going back.