Silvertel Battery Charger Modules are designed to maximized rechargeable battery life, reduced maintenance cost, and power consumption. These modules offer a wide DC input voltage range and a high-efficiency DC to DC converter. The battery charger modules come with a charging voltage that is controlled to high accuracy and independent of temperature variations. These modules have optimized and programmable charging profiles that are used to ensure battery longevity. The battery charger modules operate at 9V to 36V input supply voltage range and -0.3V to 40V supply voltage range. These modules are designed for use with Sealed Lead Acid (SLA) batteries and for charging SLA solar batteries using a solar panel power source.