Whether you have a vehicle in storage, or your battery has just run low, you can charge and maintain your 12-volt batteries - either lead-acid or lithium LiFePoO4 - at optimal capacity for peak performance and extended lifespan with the Vector® 50-Amp Automatic Battery Charger/Maintainer. This unit automatically selects charge rate and adjusts from rapid charge to trickle charge to maximize battery life and compensates for low voltage and temperature extremes. It has a powerful 50-amp engine start that rapidly helps to get the battery charging process started. Alternator Check monitors the alternator to determine operational performance and the battery reconditioner has electric pulse technology which can help reverse sulfate build-up on battery plates to improve charging carrying capability and extend battery life. Plus, there is also a handy voltage meter to check the battery and indicate battery voltage level.