[2-Pack] FOVAL Fully Automatic Trickle Charger, 1000mA 12V Smart car Battery Charger, Battery Maintainer, Float Charger for Motorcycle Car Lawn Mower Boat SLA ATV Wet Gel Cell Lead Acid Batteries

Love these chargers especially the two connected options. Use to keep riding mower battery in the ready always. Also to keep my older handicap scooter battery ready when I am. The plug in connections works real well,

as advertised and good price

Work great

I have 4 and they are used frequently and work well.

I live where it gets cold in the winter: 20 below temperatures are common, and we plug our cars in, not to charge them, but to keep the engines warm enough to start more easily. Adding one of these to the vehicle to maintain charge in batteries in vehicles not used often, but which need to be ready to go, has proven to keep even batteries nearing the end of their service life topped off and ready to go, even in severe cold. The combination of engine heater and this trickle charger makes starting the vehicle as easy as starting when it's 60 degrees out. The added draw to the circuit is so small as to be nonexistent compared to the engine heater, and it has proven to be a great way to keep the vehicle ready to go. Notably, though, any battery in a vehicle not being used on at least a weekly basis should have some sort of means to maintain its charge levels, and for the money, this is an inexpensive way to prolong battery life in vehicles used intermittently, or even daily drivers in adverse conditions.

one of the two works well, the 2nd on in the package don't work, didn't want the hassle of sending back.Update, provider made it right with me without me asking, great customer service, Well Done.

I don't expect these to last too long given the country of origin and cost but we shall see.I put a new SLA battery (Sealed Lead Acid but it may actually be an AGM Absorbed Glass Mat) in my 12.5kW generator last year and never got around to putting a maintenance charger on it. I got the two pack of the 1A (1000mA) smart trickle charger and put one on my boat battery and the other on the genny batt. It took around 30 hours for the genny batt to drop to a trickle charge but I'm pleased that it did charge. The boat batt, basically a good-sized FLA battery (Flooded Lead Acid), took a around two days, but it too dropped to a trickle charge.They don't provide a digital display, but they seem to work quite well. So far, so good.I see some people don't understand how a battery charger works. In order to charge a battery, the charging voltage MUST BE HIGHER than the battery's floating voltage. Think of it this way: Understand that voltage is pressure. In order to get more energy into the battery it has to be PUSHED in by a pressure higher than what is in the battery. That is accomplished by increasing the charging voltage over the battery's voltage (Delta V). The higher the voltage difference (Delta V) the more pressure pushing energy into the battery and hence the higher the charging current.These chargers, as are most chargers, are a combination of constant voltage and constant current chargers. They have a Wattage maximum built into them which limits the overall output buy capping the Delta V to only provide a max 1A of output current. The instructions actually do a decent job of describing this process. If only people would read them.Do you think your cell phone battery is a 5V battery? The chargers have a 5V output - right? The battery in your phone is most likely a 3.7V Lithium cell. Delta V allows it charge.

These work great. I recommend them.