Battery Tender 10 AMP 12V Battery Charger and Maintainer - Automotive Switchable 10 AMP / 6 AMP / 2 AMP - Selectable Chemistry Standard Lithium AGM - Cars SUVs Trucks – 022-0229-DL-WH

Great product, needed the extra holding power for a Mercedes with a parasitic draw, regular tenders couldn’t keep up for this limited use vehicle…

I use this battery tender on my 74 TR6. I don't drive the car that often and months can go by between drives. This device allows the battery charge to stay topped off during those times. It's very easy to use, and the cables have good reach. All you have to do is plug in the charger/tender to the wall outlet , choose the type of battery you're charging, set the charge rate and connect the alligator clips to the battery and you're all set. If the battery needs to be charged it'll charge the battery then go into float/maintenance mode once the the battery is charged. You don't have to do anything other than plug in the unit and attach the leads to the battery. It also functions well as a battery charger. There's an LED readout near the top of the unit that will show you how much of a charge the battery it's connected to has (the scale goes from red to orange to yellow, and then green when the battery is charged, and the green LED will just flash green once the battery is charged and the unit is just providing a float charge at that point.)There's really not much to complain about, it's not exactly cheap as far as these things go, but it all also doubles as a 10 amp battery charger, so it's sort of a dual-function device in that respect.

I’ve used this for a few months now. The blu tooth feature does not work at all for me, so I turn it off with a push pin every time I use this to charge. It works great for charging and maintaining my truck batteries. I have a Diesel, so I hook one end to the positive of the main battery and the other to the negative of the secondary battery. This charger detects how much amperage to input and drops to lower settings once the batteries are fully charged. Perfect for my application

Said it was for motorcycle but don't have a plug for that

I was hoping that all the bad reviews on the 10 amp battery tender were just the bad ones. Well they’re not, mine worked great wiFi and all for the first 24 hrs, after that the Wi-Fi readings just quit updating. Still waiting for it to start again. I wanted to maintain my RV battery (being 1000 miles away) well after everything looked OK and I left to go home it quit. Now I have no way of knowing what’s going on. For the price it would seem they could make one that worked. There are cheaper ones by the same manufacturer that work as a tender. With out Wi-Fi. So as so many say don’t buy it for the WiFi don’t bother. But the cheaper ones.

Shipped directly from Deltran & arrived 100% perfect. This charger has the best ability to handle effectively any battery and electrical charging need you may have. From traditional lead-acid, to Lithium-Iron-Oxide, to AGM - this puppy handles it all. When storing my truck for more than a week, I hang it from under the hood, plug it in - set it for the right battery chemistry & charge rate - and then walk away. It’s already ready.

I bought this to replace the 12v power supply in my pop up camper. It's going to be fall before I can get it in the shop so I thought I would use this for the summer at least. I have use it on the 2x12v batteries on the camper, and have use the 10 amp setting on a weak car battery and I'm impressed. For my needs it's nearly perfect. As many have said the app is worthless on android, but perhaps that will be fixed at some point.

5 star rating for being a very good and useful product - can charge and maintain flood cell lead acid, AGM lead acid, and LiFePO4 (charge rate at 2 amps only for the LiFePO4) batteries"WIFI (I didn't need it) charge status" is no longer supported, as other reviews have indicated. Keep a paper clip handy to shut down the built-in WIFI transmitter after every power-up.