Battery Smart Charger, PeleusTech 12V 14.4V 1A Portable UltraSafe Lead Acid Battery Smart Charger Maintainer - Black

la lumière indique précisément l'état de la batterie . Très fiable

Great little charger! I use it on my car. I do not drive much in winter and the battery gets low. Does it die entirely but does not have enough charge to start my car. I use this charger for a max of 1hr, usually ~10-20 minutes. It charges enough to start my car. I would NOT attempt starting with it connected. I just connect, let it trickle charge, remove, and then start the car. I have not used it for longer than 1hr and in that time it did not get hot at all. Barely even warm to the touch. The connectors are pretty flimsy, thin metal. There is no on/off switch. As soon as it is connected to a battery or the wall its powered up. I connect to battery first, then wall. I unplug from wall before removing from battery. Or clip onto plastic and do one terminal at a time. The unit is pretty dangerous given the lack of on/off. As long as you pay attention, it should not be a problem. Just be aware of that one downfall.

Works fine. Though alligator clips are a bit large and clumsy for my small battery.

I've charged/maintained a 660 CCA standard wet-cell lead-acid vehicle battery and a Cabela's 55 Ah AGM group 22 marine battery and a group 27 lead-acid marine battery. All were at about 80% state of charge (12.5 volts) when I connected this charger. All fully charged overnight. The voltage with the charger connected to the fully charged battery (charger LED went from red to green) was 13.05 volts. While charging my volt meter showed a high of 14.8 volts. And when left connected to the batteries the charger LED cycled from red to green to red several times. Indicating I presume changing from float to absorb and back. Seems to me this is a good-cheap charger for lightly discharged batteries and also maintaining batteries long term. I'm using mine to maintain the battery in a vehicle a rarely drive and to maintain my AGM marine battery. I'm not going to use this charger to charge batteries down to 50% state of charge, I think at best it would take a very long time to charge them. I'm ordering a second one of these today.

I bought 2. My application for these is with AGMs and flooded lead acid. Their outputs are not temperature compensated, so gaining some familiarity of battery charging needs vs temperature is highly recommended. Output on mine was a constant 14.7 volts (absorption) which transitioned to 13.6 volts (float) as the battery neared full charge connected to either an AGM or flooded battery. This voltage is more in line with an AGM's needs at 77 deg F, but substantially above that recommended for a flooded battery at the same temperature. The 14.7 would be the recommended voltage setting for a flooded battery @ 60 deg F. Long term connections getting into the 70s, 80s, 90s, etc are progressively worse for a flooded battery, with the potential not only for increased water loss but plate damage as well. So, my recommendation is to use these on AGMs at 77 deg F and on flooded batteries in cooler storage at round 60 degrees. A few degrees +/- isn't going to be the total destruction of a battery, just be mindful of how temperatures affect almost all battery chemistries. Using these on a timer a few hours a day might be a way around the temperature concerns. You can set the timer to operate during the cooler periods of the day.