12V 5A Smart Battery Charger - BMK

Randall S. Sujat: It works! Easy to read

United States on Nov 19, 2023

Adrian Alexander Mejia: Bought this to bring back to life my AGM battery inside my BMW and it did so within 8 or so hours since it only had 30% life left. Now I’m currently using it to trickle charge my 280Z that has an AGM battery.

United States on Nov 01, 2023

duane mousseau: sompact and easy to use

United States on Sep 24, 2023

ndez: I've had this charger just over a year now. In 2020 I stayed home a lot and drove less than 1000 miles for the entire year. My car was frequently parked in the garage for 1 to 4 weeks (or more) at a stretch without being driven. And oftentimes trips were local and quick without enough drive time to recharge the battery. I found that after about 10 days of sitting undriven, parasitic draw would reduce my battery's voltage below 12.6V. The charging and maintaining features of this unit worked really well to keep my battery charged up and reliable. Only once (the first time) was the battery below 12.5V. The BMK charger did what was expected and never got more than barely warm during the 8 or so hours it was charging, then switched to float mode. The battery itself never got warm either. Good job! All the rest of the times I've used it, the battery was between 12.5V-12.6V when I connected the charger. As expected, it took care of charging and went into float mode. BUT 5 times during the year it did something unexpected: it turned off a few hours after doing its typical routine. I have no idea why. The temperature in my SoCal garage was always moderate or cool. When...

United States on May 23, 2021

Nestor Gonzalez: If your have variation of voltage from the utility (100-240), this product works as designed. I am a photovoltaic technician and use it to keep battery toped of & if a battery is lying around--it will prevent it from getting sulfated. I reached out to a name brand & I was disappointed that the rep (owner/ceo), didn't even know that his competitors have the voltage variation available like this offers. It prevents it from killing the power supply (charger) if you have constant voltage sages. I waited some time before evaluating it. It charges up to 14.4 vdc (for agm & gel batteries) & back to 13.6 vdc after the battery is charged (floating)--as it should. Have been using it for various weeks consecutively w/o a hickup.

Update: I purchased a 2nd unit to maintain my 2nd car's battery & the other unit has been reliable. I recommend this unit. Works as designed, a very good price, I have had the original one connected weeks straight day-after-day. Worthy buy.
Update #2: have been using this unit for months straight in a row DURING HEAVY voltage sages & outages AND OVERVOLTAGE situations...

United States on Mar 11, 2021