Battery Tender Junior 12V, 750mA Charger and Maintainer: Automatic 12V Powersports for Motorcycle, ATVs, and More - Smarter Than a Trickle Charger - 021-0123

Very good quality, lasted very long with me (around five years) and I use it almost daily. very easy to use.

What great product i bought depending on its reviews but it just last for 3 seconds and then it blow up … cheap quality

No indication on if this is 110v or 240v. I bought it, plugged it in and it burned up, smoke pouring out of it. This seller needs to be investigated for fraud. Omitting something is the same as a lie. Only one star because there was nothing lower to choose from.

As soon as I connected it to the battery it smoked and made a popping sound. It’s certainly not safe and only suitable for 120v

Works fantastic to keep my lawnmower battery charged. It’s weather proof which I want for an outdoor storage space. This is my second one and it works great.

Perfeito

Great battery charger. Doesn't work super fast as it is just a battery trickle charger/maintainer, but it does not have any issue charging and keeping charged my 12 volt deep cycle marine trolling motor battery. Comes with clamps that you can use to attach to the battery terminals, or little eyelet terminal leads that you can screw onto the battery terminals. They are interchangeable with the in line connector, and make it very easy to switch out or remove the battery. Simple indicator light lets you know when charging, yellow, and when it's maintaining/done charging, green. Incidentally, I also used this to maintain power to my car when I installed a new battery. Some makes/models can get a little fussy when the battery is disconnected and the car loses power. This can result in needing it to get reset at the dealer. However when you maintain some current, for example with a maintainer like this one, you can avoid those problems. I have been using this product for about 3 years, and would recommend it to anyone.

These are used on our lawnmowers, tractors, and pickup trucks. The larger batteries take a long time to do a full charge if you need to with the Jr, but we use a higher output charger in those cases. In terms of partial charging like topping up and floating/maintaining, which is what we were after, this Jr model does the job. In the past we had some equipment that wouldn’t get used very often, especially throughout the cold Canadian winter and so the batteries would only last 2-3 years. Ever since we started using these maintainer products our batteries have been lasting 6-7 years. As soon as something gets parked it gets connected to a Tender, and the engine always fires right back up because of this. Considering batteries typically cost hundreds of dollars, the cost of these maintainers is well worth it. Our oldest Battery Tenders are over 12 years old and are still functioning, and only 1 has ever stopped functioning after a decade of consistent use. It comes with a full 12ft cord with a quick connector at about the 10ft mark, and both a separate 2ft clip or ring terminal cord. Both cords have replaceable fuses. You can hook up both to different batteries at the same time and just disconnect the quick connector to move the maintainer between them. The plug box is lightweight and doesn’t sag on the outlet and leaves enough space to use the upper socket. The cord has a medium flex and has a somewhat tough jacket, but isn’t built for being heavily abused. For the more technical buyer, this unit looks to hit a max of 14.5V and 800mA while charging and floats/maintains at 13.1V to 13.4V depending on the ambient temperature.

Broke almost immediately. Very bad quality.