BatteryMINDer Maintainer/Desulfater - 2 Amps for 48V Systems, Model# 48021 Picks up where your equipment manufacturer&#39;s supplied bulk charger leaves off for lasting maintenance and desulfation Never use BatteryMINDer at the same time as your standard golf cart charger - disconnect your standard charger before using BatteryMINDer Ambient temperature sensing adds years to battery life and performance by eliminating over/under charge, regardless of temperature (0deg F to +130deg F) Temperature compensation ensures proper charge in hot or cold environments Microprocessor controlled; simple push-button operation with battery diagnostics indicators