Review on ⚡️ Efficient TOPAC 3.5/7A 6/12 Volt Automatic Car Battery Charger: Ideal for Automotive, Motorcycle, Boat & Marine, RV, Toys, Power Tools, Lawn & Garden Battery Systems by Wayne Martin

Product works as intended. Very basic but tonal push and it's definitely waterproof (do not submerge in water). I didn't use it during 3 days of heavy rain in Florida and it still keeps my battery going. I have used it for 6v batteries, 12v motorcycle batteries and car batteries. Also gives you a constant reading of what your load is on.