Good design. Well made. Nice selection of features. Easy to use %26 has very adequate cable lengths with well made design. Battery repair function uses high %26 low frequences with 8 hour run time. Charges all kinds lead-acid batteries. Charges wide range of sizes from 4AH to bigger 150AH. Charge rates: up to 3, 5, 8 %26 10amp. User manual is informative %26 adequate; but has no indication of a trickle-charge function. In fact, it states using 5 stage charging: desulfurization, constant current, constant voltage, pulse charge, float charge. Many Pluses on this charger. When trickle-charging is not desired: This has Well Rounded Features %26 Capabilities with Great Qaulity.