Ordered this item because it is advertised as a 4-Stage Charger, which in current industry jargon means 4-Stage Intelligence (Automatic) Function . It's not, it's just a 3-stage smart charger, although I haven't physically tested that. If you expect automatic charge level control from this, it won't (according to the manual), but the battery leveling function is essential for battery care and longevity. The manual says "100A and 3-Stage Charge Option" on the front. Inside there is a section called "Description of 4-stage loading option" which is very poorly written. What I can understand from this is that the so-called 4th stage is a switch that you manually access and then set to the desired value using a digital voltmeter. This is of no use if the device is set up in a typical mobile home, as it is usually inaccessible or at best difficult to access. This might work well if you don't need the functionality advertised, but I'm returning it and buying from another seller who clearly implements the auto 4-step feature.
70mai Jump Starter Max Midrive PS06 black
37 Review
Charger Vympel 57 black
110 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Mroinge Automatic 6V/12V Trickle Charger For Vehicles, Motorcycles, Boats And More - Maintain Your Batteries With Ease!
29 Review