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

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

Perfeito

I couldn’t be more thrilled with this charger. It’s an absolute lifesaver for anyone who owns motorcycles, ATVs, or other vehicles that require regular battery maintenance. Setting it up is a breeze, even if you’re not particularly tech-savvy. The design is compact and lightweight, making it easy to handle, store, or even take with you on the go. One feature I really appreciate is how it automatically switches to maintenance mode when the battery is fully charged. This gives me peace of mind, knowing my batteries are protected from overcharging, which can cause damage over time. I’ve used it multiple times already, and every single time, it’s performed flawlessly. My motorcycle battery used to struggle during colder months, but with this charger, it stays in top-notch condition and starts up like a dream. I also love how dependable it is—no sudden glitches or errors to worry about. It truly does what it’s supposed to do, and it does it exceptionally well. Honestly, it’s worth every penny and has saved me a lot of headaches. If you’re looking for a trustworthy, efficient, and easy-to-use charger, this is the one! It’s the kind of product that quickly becomes a must-have in your toolkit. I wouldn’t hesitate to recommend it to anyone in need of a reliable solution for battery care.

Great product. It's small, well thought-out and does what it says on the box. I travel a lot for work, so my car is parked at home for 2-3 weeks every month. I drive a BMW, and the electronics draw the battery down while it's parked. It will start after 2 weeks but not after 3 if no one runs the engine. So I picked up a battery tender junior and I've been very happy with it. It's small enough to tuck in the trunk, and the detachable leads are a great feature - I leave them attached to my car's jumping posts under the hood, so it takes all of a few seconds to connect or disconnect. It's kept my battery in great shape. In fact I've gained a few tenths of a volt both with and without the engine running, which is pretty fantastic considering my battery is 4 years old. I run a couple aftermarket amps, an obd2 wifi dongle, and a radar detector, which I know is taxing on my car's electrical device, so this guy gives me some peace of mind. And it's a steal for the price... it's a half to a third the price of a decent trickle charger, and it's better for my battery which is going to save me money over time. Very happy with this purchase.

Excelente producto, yo le puse un conector rápido a la batería para solamente abrir el asiento y conectarl, sin necesidad del adaptador, carga perfecto la batería y de lo más rápido posible.

This item is really for the U.S. market and was of no use to me as can not be safety used with uk power system.