The Ring RSC804 is a 4A smart charger and battery maintainer suitable for 6V and 12V vehicles and recommended for START/STOP batteries.& nbsp; Compatible with lead acid gel calcium EFB and AGM batteries.& nbsp; Keeps batteries in good condition without risk of overcharging.& nbsp; One button operation and large LCD backlit display for ease of use as well as reverse polarity and short-circuit protection for safety.& nbsp; <span id=”sceditor-end-marker” class=”sceditor-selection sceditor-ignore” style=”line-height: 0; display: none;”> </span><span id=”sceditor-start-marker” class=”sceditor-selection sceditor-ignore” style=”line-height: 0; display: none;”> </span>Connect and be sure with the charger adjusting automatically to long-term maintenance mode when the vehicle's battery is full.<br>