TowerTop 2/10/25 Amp 12V Smart Car Battery Charger, Fully Automatic Battery Maintainer with Engine Start, Auto Desulfator, Battery Repair, Winter Mode, for AGM, STD, Gel, Deep Cycle Batteries

This is the best purchase I've made in years. Thank you to the manufacturer. Great low price. So simple my wife can hook it up, and she admittedly knows nothing about charging a battery. Here's why a snagged this. My wife left the door ajar in her SUV and ran the battery down to nothing. I jumped it with my car but figured her battery needed some TLC. Hers is a 2023, mine is a 2017. So mine was closer to death than hers. The charger came overnight. I connected the red cable and the black cable to her battery... directly to the battery and plugged it in. I didn't disconnect anything, it was still in the vehicle. The charger display lit up. Wow! I didn't even hit Start yet. And it started diagnosing the battery on its own. Magic! I was shocked. It went through all 8 stages and desulfationed and then deep charged it. It took about 5 hours. It sat on 99% for quiet awhile, then 100% and shut itself off. Voila! I took the cables off and moved it to my 2017 battery. Same thing happened, it just went to work. I left it overnight and in the morning, 100%. I'm telling you, whoever designed this was at genius level. There were no side effects with electronics, loss of radio stations, or anything. I'm impressed. I would buy this again in a heartbeat. It makes you want to tell all of your friends and put it on their batteries just so they can experience the magic too. And it's pretty compact compared to the old battery chargers. Get one! Highly recommended!

II am lucky enough to own a 71 Monte Carlo with 23,000 actual thousand miles and only drive it to auto shows and competitions. Since I stored on a car lift and occasionally crank it up, I tend to go through batteries in a couple years because it does not get enough use to keep it charged, even with a trickle charger. I purchased this unit when I brought the car down to crank a few weeks ago, and the battery attempted it one time and failed. I needed an intelligent charger to try to renovate this battery before I go to the battery store again and buy another one. To my amazement this unit did the job with ease! I could smell the sulfuric acid as it was pulsing and restoring the cells, and then it charge the battery completely as I left it overnight. When I checked on it the next morning, the car fired up as if it had been driven on a regular basis! I'm totally happy with this units and recommended for anyone that has occasional need for good charger. My only hope that it is built to last, which remains to be seen. But in any event, it is certainly cheaper than replacing a battery, and it's worth investing, in my opinion. I hope this helps you…

After shopping around for awhile this had the right combination of features and price. I've had to charge a few dead batteries with this and it seems to work as advertised. Even though there are a lot of features, I like how I can plug it in and hook it up and it starts charging automatically while giving me a readout of the percent charge. I haven't noticed anything I don't like about it yet, so I can't remove any stars.

Very lightweight small profile. Has a readout to show how many amps are being pulled and used on charging. It’s “100 amp car start” does NOT have the same power as my beat up 20 year old Schumacher charger with its 50amp start. I do like the fact it has different battery type modes, and the smart features.It sure does click A LOT in different modes, and I hope relays or whatever used inside do not wear out or short. It’s a $100 charger. It needs to last

The item arrived as specified and undamaged. I really enjoy how the TowerTop manages the amount of charging on my 31 DCM batteries and I really love that I don't have to reset it by unplugging it and then plugging it back in. The smart charger just continues to monitor my batteries voltages and automatically charges them. Once the batteries are at 100% the smart charger decreases the amperage in order to avoid overcharging and heat. Thanks TowerTop and Thanks to those who reviewed it before me as your reviews helped me make the right choice.

We've got two SUVs with batteries of 4 and 5 years of age.I've used trickle chargers routinely (as well as two heavy duty 25+A chargers), but, prefer to do a once per month or so Battery charge and conditioning as needed.My older primary heavy duty charger (2-25A range) did a decent job, but, would typically top off at 100% for what seemed too soon.That would generally cost me a .1 or .2 volt loss due to the charger not dropping down to a trickle range (1-2A) to slowly complete the charge to 100% of the batteries capacity.The TowerTop 3/15/25A seems to have a much better logic system in it and it will bring your battery up to the maximum capacity that your battery has remaining. I have found the TowerTop trickle charges for perhaps 2 more hour at around 1-1.5 amps to get my batteries up as high as possible for the charge state.I found the TowerTop can bring up my battery between .1 and .2 more volts than my old charger(s) did.The TowerTop also tests the battery for absorption (among other initial tests it does for each charge cycle) and will determine the condition of your battery relative to how (well) it will take a charge.For the cold of Winter here, the Winter mode that increases voltage inout by .2 volts which does help to charge a cold battery in those elements.I have yet to use some of the other modes, but, for charging older batteries to their remaining full capacity, The TowerTop is now the charger I use all of the time now.It's also light in weight and has a small size profile which is a plus as well.If you have an older charger which lacks the tech that the TowerTop has, I highly recommend you upgrade if you want to get all that you possibly can from your aging battery!5 Stars all around! Was worth every penny!

Charger works great and was received in good condition....

This is a very nice charger. I tried 3 others and none of them matched up.